AsiignmentStruct

Entities/Contracts/AppMainStruct.cs

@@ -67,11 +67,11 @@ namespace Entities.Contracts
 		ComputerScience, // 计算机科学
 	}
 
-	public enum QuestionGroupState : byte
+	public enum AssignmentStructType : byte
 	{
-		Standalone,
+		Question,
-		Group,
+		Struct,
-		Subquestion
+		SubQuestion
 	}
 
 }

Entities/Contracts/Assignment.cs

@@ -5,6 +5,7 @@ using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Entities.DTO;
 
 namespace Entities.Contracts
 {
@@ -53,7 +54,7 @@ namespace Entities.Contracts
 		[ForeignKey(nameof(CreatorId))]
 		public User Creator { get; set; }
 		public ICollection<AssignmentClass> AssignmentClasses { get; set; }
-		public AssignmentStruct ExamStruct { get; set; }
+		public AssignmentQuestion ExamStruct { get; set; }
 		public ICollection<AssignmentAttachment> AssignmentAttachments { get; set; }
 		public ICollection<Submission> Submissions { get; set; }
 

Entities/Contracts/AssignmentQuestion.cs

@@ -18,23 +18,28 @@ namespace Entities.Contracts
 		public Guid Id { get; set; }
 
 		[Column("question_id")]
-		public Guid QuestionId { get; set; } 
+		public Guid? QuestionId { get; set; }
 
-		[Required]
+		[Column("assignment")]
-		[Column("group_id")]
+		[ForeignKey("Assignment")]
-		[ForeignKey("AssignmentGroup")]
+		public Guid? AssignmentId { get; set; }
-		public Guid AssignmentStructId { get; set; }
+
+		[Column("title")]
+		[MaxLength(1024)]
+		public string? Title { get; set; }
+
+		[Column("description")]
+		public Guid? QuestionContextId { get; set; }
 
 		[Required]
 		[Column("question_number")]
 		public byte Index { get; set; }
 
-
 		[Column("parent_question_group_id")]
 		public Guid? ParentAssignmentQuestionId { get; set; }
 
 		[Column("group_state")]
-		public QuestionGroupState GroupState { get; set; } = QuestionGroupState.Standalone;
+		public AssignmentStructType StructType { get; set; } = AssignmentStructType.Question;
 
 		[Column("created_at")]
 		public DateTime CreatedAt { get; set; }
@@ -42,13 +47,17 @@ namespace Entities.Contracts
 		[Column("score")]
 		public float? Score { get; set; }
 
-
 		[Column("deleted")]
 		public bool IsDeleted { get; set; }
 
 
-		public Question Question { get; set; }
+		public Question? Question { get; set; }
-		public AssignmentStruct AssignmentStruct { get; set; }
+		public Assignment? Assignment { get; set; }
+
+
+		[ForeignKey(nameof(QuestionContextId))]
+		public QuestionContext? QuestionContext { get; set; }
+
 		public ICollection<SubmissionDetail> SubmissionDetails { get; set; }
 
 		[ForeignKey(nameof(ParentAssignmentQuestionId))]

Entities/Contracts/AssignmentStruct.cs

@@ -1,61 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations.Schema;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Runtime.InteropServices;
-
-namespace Entities.Contracts
-{
-	[Table("assignment_group")]
-	public class AssignmentStruct
-	{
-		[Key]
-		[Column("id")]
-		public Guid Id { get; set; }
-
-		[Column("assignment")]
-		[ForeignKey("Assignment")]
-		public Guid? AssignmentId { get; set; }
-
-		[Required]
-		[Column("title")]
-		[MaxLength(65535)] 
-		public string Title { get; set; }
-
-		[Column("descript")]
-		[MaxLength(65535)] 
-		public string Description { get; set; }
-
-		[Column("layout")]
-		public Layout Layout { get; set; }	
-
-		[Column("total_points")]
-		public float? Score { get; set; }
-
-		[Column("index")]
-		public byte Index { get; set; }
-
-		[Column("parent_group")]
-		public Guid? ParentStructId { get; set; }
-
-		[Column("deleted")]
-		public bool IsDeleted { get; set; } = false;
-
-		// Navigation Properties
-		public Assignment? Assignment { get; set; }
-		public AssignmentStruct? ParentStruct { get; set;}
-		public ICollection<AssignmentStruct> ChildrenGroups { get; set; }
-		public ICollection<AssignmentQuestion> AssignmentQuestions { get; set; }
-
-
-		public AssignmentStruct()
-		{
-			Id = Guid.NewGuid();
-			ChildrenGroups = new HashSet<AssignmentStruct>();
-			AssignmentQuestions = new HashSet<AssignmentQuestion>();
-		}
-	}
-}

Entities/Contracts/Question.cs

@@ -24,8 +24,7 @@ namespace Entities.Contracts
 		[MaxLength(65535)]
 		public string? Answer { get; set; }
 
-		[Column("description")]
+
-		public Guid? DescriptionId { get; set; }
 
 		[Required]
 		[Column("type")]
@@ -68,11 +67,6 @@ namespace Entities.Contracts
 		[ForeignKey(nameof(CreatorId))]
 		public User Creator { get; set; }
 
-		[ForeignKey(nameof(DescriptionId))]
-		public QuestionContext Description { get; set; }
-		public Question? ParentQuestion { get; set; }
-		public ICollection<Question>? ChildrenQuestion { get; set; }
-
 		[ForeignKey(nameof(KeyPointId))]
 		public KeyPoint? KeyPoint { get; set; }
 		[ForeignKey(nameof(LessonId))]	
@@ -84,7 +78,6 @@ namespace Entities.Contracts
 		{
 			Id = Guid.NewGuid();
 			AssignmentQuestions = new HashSet<AssignmentQuestion>();
-			ChildrenQuestion = new HashSet<Question>();	
 		}
 	}
 

Entities/Contracts/QuestionContext.cs

@@ -13,13 +13,13 @@ namespace Entities.Contracts
 
 		public string Description { get; set; } = string.Empty;
 
-		[InverseProperty(nameof(Question.Description))]	
+		[InverseProperty(nameof(AssignmentQuestion.QuestionContext))]	
-		public ICollection<Question> Questions { get; set; } = new List<Question>();
+		public ICollection<AssignmentQuestion>? Questions { get; set; } = new List<AssignmentQuestion>();
 
 
 		public QuestionContext()
 		{
-			Questions = new HashSet<Question>();
+			Questions = new HashSet<AssignmentQuestion>();
 		}
 	}
 }

Entities/DTO/AssignmentQuestionDto.cs

@@ -9,17 +9,19 @@ namespace Entities.DTO
 {
 	public class AssignmentQuestionDto
 	{
-		public float Score { get; set; } = 0;
+		public Guid Id { get; set; } = Guid.Empty;
+		public string Title { get; set; } = string.Empty;
+		public QuestionContextDto? Description { get; set; }
+
 		public byte Index { get; set; } = 0;
-		public QuestionGroupState GroupState { get; set; } = QuestionGroupState.Standalone;
+		public float Score { get; set; } = 0;
-
 
+		public Layout Layout { get; set; } = Layout.horizontal;
+		public AssignmentStructType StructType { get; set; } = AssignmentStructType.Question;
 
 		public AssignmentQuestionDto? ParentAssignmentQuestion { get; set; }
 		public ICollection<AssignmentQuestionDto> ChildrenAssignmentQuestion { get; set; } = new List<AssignmentQuestionDto>();
 
-
+		public QuestionDto? Question { get; set; }
-
-		public QuestionDto Question { get; set; }
 	}
 }

Entities/DTO/ExamDto.cs

@@ -8,25 +8,6 @@ using System.Xml.Serialization;
 
 namespace Entities.DTO
 {
-
-	public class AssignmentStructDto
-	{
-		public Guid Id { get; set; } = Guid.Empty;
-		public string Title { get; set; } = string.Empty;
-		public string Description { get; set; } = string.Empty;
-		public float Score { get; set; } = 0;
-		public byte Index { get; set; } = 0;
-		public Layout Layout { get; set; } = Layout.horizontal;
-
-
-
-
-		public ICollection<AssignmentQuestionDto> AssignmentQuestions { get; set; } = new List<AssignmentQuestionDto>();
-
-		public AssignmentStructDto? ParentStruct { get; set; }
-		public ICollection<AssignmentStructDto> ChildrenGroups { get; set; } = new List<AssignmentStructDto>();
-	}
-
 	public class AssignmentDto
 	{
 		public Guid Id { get; set; } = Guid.Empty;
@@ -41,7 +22,7 @@ namespace Entities.DTO
 		public DateTime DueDate { get; set; }
 		public Guid CreatorId { get; set; }
 
-		public AssignmentStructDto ExamStruct { get; set; } = new AssignmentStructDto();
+		public AssignmentQuestionDto ExamStruct { get; set; } = new AssignmentQuestionDto();
 	}
 
 	public class AssignmentClassDto

Entities/DTO/QuestionDto.cs

@@ -15,8 +15,6 @@ namespace Entities.DTO
 
 		public string Title { get; set; } = string.Empty;
 
-		public QuestionContextDto? Description { get; set; }	
-
 		public QuestionType Type { get; set; } = QuestionType.Unknown;
 
 		public string? Answer { get; set; } = string.Empty;

TechHelper.Client/Exam/ExamPaperExtensions .cs

@@ -26,12 +26,12 @@ namespace TechHelper.Client.Exam
 			Enum.TryParse<SubjectAreaEnum>(examPaper.SubjectArea, out SubjectArea);
 			dto.SubjectArea = SubjectArea;
 
-			AssignmentStructDto examStruct = new AssignmentStructDto();
+			AssignmentQuestionDto examStruct = new AssignmentQuestionDto();
 
 			foreach (var qg in examPaper.QuestionGroups)
 			{
-				examStruct.ChildrenGroups.Add(ParseMajorQuestionGroup(qg));
+				examStruct.ChildrenAssignmentQuestion.Add(ParseMajorQuestionGroup(qg));
-				examStruct.ChildrenGroups.Last().Index = (byte)(examStruct.ChildrenGroups.Count());
+				examStruct.ChildrenAssignmentQuestion.Last().Index = (byte)(examStruct.ChildrenAssignmentQuestion.Count());
 			}
 
 			dto.ExamStruct = examStruct;
@@ -39,28 +39,20 @@ namespace TechHelper.Client.Exam
 			return dto;
 		}
 
-		private static AssignmentStructDto ParseMajorQuestionGroup(MajorQuestionGroup sqg)
+		private static AssignmentQuestionDto ParseMajorQuestionGroup(MajorQuestionGroup sqg)
 		{
-			var examStruct = new AssignmentStructDto();
+			var examStruct = new AssignmentQuestionDto();
-
+			examStruct.Title = sqg.Title;
+			examStruct.Score = sqg.Score;
 			if (sqg.SubQuestionGroups != null)
 			{
 
-				examStruct.Title = sqg.Title;
+
-				examStruct.Score = sqg.Score;
+				examStruct.ChildrenAssignmentQuestion = new List<AssignmentQuestionDto>();
-				examStruct.ChildrenGroups = new List<AssignmentStructDto>();
 				sqg.SubQuestionGroups?.ForEach(ssqg =>
 				{
-					if (string.IsNullOrEmpty(ssqg.Descript))
+						examStruct.ChildrenAssignmentQuestion.Add(ParseMajorQuestionGroup(ssqg));
-					{
+						examStruct.ChildrenAssignmentQuestion.Last().Index = (byte)(examStruct.ChildrenAssignmentQuestion.Count());
-						examStruct.ChildrenGroups.Add(ParseMajorQuestionGroup(ssqg));
-						examStruct.ChildrenGroups.Last().Index = (byte)(examStruct.ChildrenGroups.Count());
-					}
-					else
-					{
-						examStruct.AssignmentQuestions.Add(ParseGroupToAssignmentQuestion(ssqg, false));
-						examStruct.AssignmentQuestions.Last().Index = (byte)(examStruct.AssignmentQuestions.Count());
-					}
 
 				});
 
@@ -72,12 +64,8 @@ namespace TechHelper.Client.Exam
 
 				sqg.SubQuestions?.ForEach(sq =>
 				{
-					if(sq.SubQuestions.Any())
+					examStruct.ChildrenAssignmentQuestion.Add(ParseAssignmentQuestion(sq));
-					{
+					examStruct.ChildrenAssignmentQuestion.Last().Index = (byte)(examStruct.ChildrenAssignmentQuestion.Count());
-
-					}
-					examStruct.AssignmentQuestions.Add(ParseAssignmentQuestion(sq));
-					examStruct.AssignmentQuestions.Last().Index = (byte)(examStruct.AssignmentQuestions.Count());
 				});
 			}
 
@@ -91,47 +79,6 @@ namespace TechHelper.Client.Exam
 				.Where(line => !string.IsNullOrWhiteSpace(line)).ToList();
 		}
 
-		private static QuestionDto ParseGroupToQuestion(MajorQuestionGroup qg, bool subQ = true)
-		{
-			var dq = new QuestionDto();
-			dq.Title = qg.Title + Environment.NewLine + qg.Descript;
-
-			if (subQ) dq.GroupState = QuestionGroupState.Subquestion;
-			else dq.GroupState = QuestionGroupState.Group;
-
-			qg.SubQuestions?.ForEach(ssq =>
-			{
-				dq.ChildrenQuestion.Add(ParseQuestion(ssq));
-			});
-
-			qg.SubQuestionGroups?.ForEach(sqg =>
-			{
-				dq.ChildrenQuestion.Add(ParseGroupToQuestion(sqg));
-			});
-
-			return dq;
-		}
-
-		private static AssignmentQuestionDto ParseGroupToAssignmentQuestion(MajorQuestionGroup qg, bool subQ = true)
-		{
-			var aq = new AssignmentQuestionDto();
-			aq.Score = qg.Score;
-
-			qg.SubQuestions?.ForEach(ssq =>
-			{
-				aq.Question.ChildrenQuestion.Add(ParseQuestion(ssq));
-				aq.Question.ChildrenQuestion.Last().Index = (byte)aq.Question.ChildrenQuestion.Count;
-			});
-
-			qg.SubQuestionGroups?.ForEach(sqg =>
-			{
-				aq.Question.ChildrenQuestion.Add(ParseGroupToQuestion(sqg));
-				aq.Question.ChildrenQuestion.Last().Index = (byte)aq.Question.ChildrenQuestion.Count;
-			});
-
-			return aq;
-		}
-
 
 		private static AssignmentQuestionDto ParseAssignmentQuestion(PaperQuestion sq)
 		{
@@ -143,8 +90,8 @@ namespace TechHelper.Client.Exam
 			sq.SubQuestions?.ForEach(ssq =>
 			{
 
-				aq.Question.ChildrenQuestion.Add(ParseQuestion(ssq));
+				aq.ChildrenAssignmentQuestion.Add(ParseAssignmentQuestion(ssq));
-				aq.Question.ChildrenQuestion.Last().Index = (byte)aq.Question.ChildrenQuestion.Count;
+				aq.ChildrenAssignmentQuestion.Last().Index = (byte)aq.ChildrenAssignmentQuestion.Count;
 
 			});
 
@@ -156,14 +103,6 @@ namespace TechHelper.Client.Exam
 			var dq = new QuestionDto();
 			dq.Title = sq.Stem;
 			dq.Options = string.Join(Environment.NewLine, sq.Options.Select(opt => $"{opt.Label} {opt.Text}"));
-			dq.Score = sq.Score;
-
-
-			sq.SubQuestions?.ForEach(ssq =>
-			{
-				dq.ChildrenQuestion.Add(ParseQuestion(ssq));
-				dq.ChildrenQuestion.Last().Index = (byte)dq.ChildrenQuestion.Count;
-			});
 
 			return dq;
 		}

TechHelper.Client/Exam/ExamParse.cs

@@ -6,14 +6,14 @@ using System.Text.RegularExpressions;
 
 namespace TechHelper.Client.Exam
 {
-	// --- 新增错误处理相关类 ---
+	
 	public class ParseError
 	{
 		public ParseErrorType Type { get; }
 		public string Message { get; }
-		public int? Index { get; } // 错误发生的文本索引或匹配项索引
+		public int? Index { get; } 
-		public string MatchedText { get; } // 如果与某个匹配项相关，记录其文本
+		public string MatchedText { get; } 
-		public Exception InnerException { get; } // 捕获到的原始异常
+		public Exception InnerException { get; }
 
 		public ParseError(ParseErrorType type, string message, int? index = null, string matchedText = null, Exception innerException = null)
 		{

TechHelper.Client/Pages/Exam/AssignmentQuestionEdit.razor

@@ -0,0 +1,17 @@
+@using Entities.DTO
+@using TechHelper.Client.Exam
+
+
+<MudPaper>
+	<MudText>@AssignmentQuestion.Id</MudText>
+	<MudTextField @bind-Value="AssignmentQuestion.Title" Label="Title" Variant="Variant.Outlined" Margin="Margin.Dense" AutoFocus="true" />
+	<MudTextField @bind-Value="AssignmentQuestion.Index" Label="Index" Variant="Variant.Outlined" Adornment="Adornment.End" AdornmentText="." Margin="Margin.Dense" AutoFocus="true" />
+	<MudTextField @bind-Value="AssignmentQuestion.Score" Label="Score" Variant="Variant.Outlined" Adornment="Adornment.End" AdornmentText="." Margin="Margin.Dense" AutoFocus="true" />
+	<QuestionEdit Question="AssignmentQuestion.Question"/>
+</MudPaper>
+
+
+@code {
+	[Parameter]
+	public AssignmentQuestionDto AssignmentQuestion { get; set; } = new AssignmentQuestionDto();
+}

TechHelper.Client/Pages/Exam/ExamCreate.razor

@@ -9,20 +9,32 @@
 @using System.Globalization;
 @using TechHelper.Client.Pages.Editor
 
+
 <MudPaper Elevation="5" Class="d-flex overflow-hidden flex-grow-1" Style="overflow:hidden; position:relative;height:100%">
 	<MudDrawerContainer Class="mud-height-full flex-grow-1" Style="height:100%">
 		<MudDrawer @bind-Open="@_open" Elevation="0" Variant="@DrawerVariant.Persistent" Color="Color.Primary" Anchor="Anchor.End" OverlayAutoClose="true">
-			<MudDrawerHeader>
-				<MudText Typo="Typo.h6"> 配置 </MudText>
-			</MudDrawerHeader>
 
-			<MudStack Class="overflow-auto">
+			@if (_edit)
-				<ParseRoleConfig />
+			{
-				<MudButton Color="Color.Success"> ParseExam </MudButton>
+				<AssignmentQuestionEdit AssignmentQuestion="selectedAssignmentQuestion" />
-			</MudStack>
+			}
+			else
+			{
+
+				<MudDrawerHeader>
+					<MudText Typo="Typo.h6"> 配置 </MudText>
+				</MudDrawerHeader>
+
+				<MudStack Class="overflow-auto">
+					<ParseRoleConfig />
+					<MudButton Color="Color.Success"> ParseExam </MudButton>
+				</MudStack>
+			}
+
+
 		</MudDrawer>
 		<MudStack Row="true" Class="flex-grow-1" Style="height:100%">
-			<ExamView Class="overflow-auto" ParsedExam="ExamContent"></ExamView>
+			<ExamView Class="overflow-auto" ClickedStruct="HandleClickedStruct" ParsedExam="ExamContent"></ExamView>
 
 			<MudPaper Class="ma-2">
 				<MudPaper Elevation="0" Style="height:calc(100% - 80px)">
@@ -75,11 +87,15 @@
 	[CascadingParameter]
 	private Task<AuthenticationState> authenticationStateTask { get; set; }
 
+	private AssignmentQuestionDto selectedAssignmentQuestion = new AssignmentQuestionDto();
+
 	private bool _open = false;
+	private bool _edit = false;
 
 	private void ToggleDrawer()
 	{
 		_open = !_open;
+		_edit = false;
 	}
 	private BlazoredTextEditor _textEditor = new BlazoredTextEditor();
 	private ExamPaper _parsedExam = new ExamPaper();
@@ -87,6 +103,14 @@
 
 	private ExamParserConfig _examParserConfig { get; set; } = new ExamParserConfig();
 
+	private void HandleClickedStruct(AssignmentQuestionDto dto)
+	{
+		_open = true;
+		_edit = true;
+		selectedAssignmentQuestion = dto;
+		StateHasChanged();
+	}
+
 	private async Task ParseExam()
 	{
 

TechHelper.Client/Pages/Exam/ExamGroupView.razor

@@ -1,36 +0,0 @@
-@using Entities.DTO
-@using TechHelper.Client.Exam
-
-
-<MudPaper Elevation=@Elevation Class=@Class>
-
-	<MudStack Row="true">
-		<MudText Typo="Typo.h6">@ExamStruct.Title</MudText>
-		@if (ExamStruct.Score > 0)
-			{
-			<MudText Typo="Typo.body2"><b>总分:</b> @ExamStruct.Score 分</MudText>
-			}
-		</MudStack>
-
-	@foreach (var childStruct in ExamStruct.ChildrenGroups)
-	{
-		<ExamGroupView ExamStruct="childStruct"/>
-	}
-
-	@foreach (var question in ExamStruct.AssignmentQuestions)
-	{
-		<QuestionCard Question="question.Question" Elevation=@Elevation Class="my-2 pa-1" />
-	}
-
-</MudPaper>
-
-@code {
-	[Parameter]
-	public AssignmentStructDto ExamStruct { get; set; } = new AssignmentStructDto();
-
-	[Parameter]
-	public string Class { get; set; } = "my-2 pa-1";
-
-	[Parameter]
-	public int Elevation { get; set; } = 0;
-}

TechHelper.Client/Pages/Exam/ExamStructView.razor

@@ -0,0 +1,51 @@
+@using Entities.DTO
+@using TechHelper.Client.Exam
+
+<MudPaper @onclick:stopPropagation>
+	<MudPaper Elevation=@Elevation Class=@Class @onclick="HandleClick">
+
+		<MudStack Row="true">
+			<MudText Typo="Typo.h6">@ExamStruct.Title</MudText>
+			@if (ExamStruct.Score > 0)
+			{
+				<MudText Typo="Typo.body2"><b>总分:</b> @ExamStruct.Score 分</MudText>
+			}
+		</MudStack>
+
+		@if (ExamStruct.Question != null)
+		{
+			<QuestionCard Question="ExamStruct.Question" Index="ExamStruct.Index" Elevation=@Elevation Class="my-2 pa-1" />
+		}
+
+		@foreach (var examStruct in ExamStruct.ChildrenAssignmentQuestion)
+		{
+			<ExamStructView ExamStruct="examStruct" ClickedStruct="HandleChildStructClick" Elevation=@Elevation Class="my-2 pa-1" />
+		}
+
+	</MudPaper>
+</MudPaper>
+
+@code {
+	[Parameter]
+	public AssignmentQuestionDto ExamStruct { get; set; } = new AssignmentQuestionDto();
+
+	[Parameter]
+	public EventCallback<AssignmentQuestionDto> ClickedStruct { get; set; }
+
+	[Parameter]
+	public string Class { get; set; } = "my-2 pa-1";
+
+	[Parameter]
+	public int Elevation { get; set; } = 0;
+
+
+	private async void HandleClick()
+	{
+		await ClickedStruct.InvokeAsync(ExamStruct);
+	}
+
+	private async void HandleChildStructClick(AssignmentQuestionDto clickedChildExamStruct)
+	{
+		await ClickedStruct.InvokeAsync(clickedChildExamStruct);
+	}
+}

TechHelper.Client/Pages/Exam/ExamView.razor

@@ -8,7 +8,7 @@
 		<MudText Class="d-flex justify-content-center" Typo="Typo.h6"> @ParsedExam.Title </MudText>
 		<MudText Typo="Typo.body1"> @ParsedExam.Description </MudText>
 
-		<ExamGroupView ExamStruct="@ParsedExam.ExamStruct" Elevation="1" Class="ma-0 pa-2" />
+		<ExamStructView ExamStruct="@ParsedExam.ExamStruct" Elevation="1" ClickedStruct="HandleClickedStruct" Class="ma-0 pa-2" />
 	</MudPaper>
 
 }
@@ -25,6 +25,10 @@ else
 
 	[Parameter]
 	public AssignmentDto ParsedExam { get; set; } = new AssignmentDto();
+
+	[Parameter]
+	public EventCallback<AssignmentQuestionDto> ClickedStruct { get; set; }
+
 	[Parameter]
 	public string Height { get; set; } = "100%";
 	[Parameter]
@@ -33,4 +37,10 @@ else
 	public string Class { get; set; } = "";
 	[Parameter]
 	public string Style { get; set; } = "";
+
+
+	private void HandleClickedStruct(AssignmentQuestionDto dto)
+	{
+		ClickedStruct.InvokeAsync(dto);
+	}
 }

TechHelper.Client/Pages/Exam/QuestionCard.razor

@@ -4,14 +4,14 @@
 <MudPaper Class=@Class Elevation=@Elevation Outlined="false">
 
 	<MudText Typo="Typo.subtitle1">
-		<b>@Question.Index</b> @((MarkupString)Question.Title.Replace("\n", "<br />"))
+		<b>@Index</b> @((MarkupString)Question.Title.Replace("\n", "<br />"))
-		@if (Question.Score > 0)
+		@if (Score > 0)
 		{
-			<MudText Typo="Typo.body2" Class="d-inline ml-2">(@Question.Score 分)</MudText>
+			<MudText Typo="Typo.body2" Class="d-inline ml-2">(@Score 分)</MudText>
 		}
 	</MudText>
 
-	@if (Question.Options != null)
+	@if (!string.IsNullOrEmpty(Question.Options))
 	{
 		<div class="mt-2">
 			@foreach (var option in Question.Options.ParseOptionsFromText())
@@ -22,12 +22,6 @@
 		</div>
 	}
 
-
-	@foreach(var item in Question.ChildrenQuestion)
-	{
-		<QuestionCard Question="item"/>
-
-	}
 </MudPaper>
 
 @code {
@@ -35,7 +29,13 @@
 	public QuestionDto Question { get; set; } = new QuestionDto();
 
 	[Parameter]
-	public string Class { get; set; }
+	public byte Index { get; set; } = 0;
+
+	[Parameter]
+	public byte Score { get; set; } = 0;
+
+	[Parameter]
+	public string Class { get; set; } = string.Empty;
 
 	[Parameter]
 	public int Elevation { get; set; }

TechHelper.Client/Pages/Exam/QuestionEdit.razor

@@ -0,0 +1,17 @@
+@using Entities.DTO
+@using TechHelper.Client.Exam
+
+
+<MudPaper>
+	<MudText>@Question.Id</MudText>
+	<MudTextField @bind-Value="Question.Title" Label="Title" Variant="Variant.Outlined" Margin="Margin.Dense" AutoGrow="true" />
+	<MudTextField @bind-Value="Question.Answer" Label="Answer" Variant="Variant.Outlined" Adornment="Adornment.End" AdornmentText="." Margin="Margin.Dense" AutoGrow="true" />
+	<MudTextField @bind-Value="Question.Options" Label="Options" Variant="Variant.Outlined" Adornment="Adornment.End" AdornmentText="." Margin="Margin.Dense" AutoGrow="true" />
+
+</MudPaper>
+
+
+@code {
+	[Parameter]
+	public QuestionDto Question { get; set; } = new QuestionDto();
+}

TechHelper.Server/Context/ApplicationContext.cs

@@ -13,7 +13,6 @@ namespace TechHelper.Context
 
 		public DbSet<AssignmentClass> AssignmentClasses { get; set; }
 		public DbSet<Assignment> Assignments { get; set; }
-		public DbSet<AssignmentQuestion> AssignmentGroups { get; set; }	
 		public DbSet<AssignmentQuestion> AssignmentQuestions { get; set; }	
 		public DbSet<Class> Classes { get; set; }	
 		public DbSet<ClassTeacher> ClassStudents { get; set; }	
@@ -21,6 +20,7 @@ namespace TechHelper.Context
 		public DbSet<Question> Questions { get; set; }	
 		public DbSet<Submission> Submissions { get; set; }
 		public DbSet<SubmissionDetail> SubmissionDetails { get; set; }	
+		public DbSet<QuestionContext> QuestionContexts { get; set; }	
 
 		protected override void OnModelCreating(ModelBuilder builder)
 		{
@@ -28,7 +28,6 @@ namespace TechHelper.Context
 			builder.ApplyConfiguration(new RoleConfiguration());
 			builder.ApplyConfiguration(new AssignmentConfiguration());
 			builder.ApplyConfiguration(new AssignmentClassConfiguration());
-			builder.ApplyConfiguration(new AssignmentGroupConfiguration());
 			builder.ApplyConfiguration(new AssignmentQuestionConfiguration());
 			builder.ApplyConfiguration(new ClassConfiguration());
 			builder.ApplyConfiguration(new ClassStudentConfiguration());

TechHelper.Server/Context/AutoMapperProFile.cs

@@ -50,10 +50,11 @@ namespace TechHelper.Context
 			// =============================================================
 			// ENTITY -> DTO Mappings (用于读取/查询)
 			// =============================================================
-			CreateMap<Assignment, AssignmentDto>()
+			CreateMap<Assignment, AssignmentDto>();
-				.ForMember(dest => dest.ExamStruct, opt => opt.MapFrom(src => src.ExamStruct));
+
+			CreateMap<QuestionContext, QuestionContextDto>().ReverseMap();	
+
 
-			CreateMap<AssignmentStruct, AssignmentStructDto>(); // 直接映射，因为成员现在对等了
 
 			// 新增！从实体到新的 DTO 的映射
 			CreateMap<AssignmentQuestion, AssignmentQuestionDto>();
@@ -64,7 +65,6 @@ namespace TechHelper.Context
 			// DTO -> ENTITY Mappings (用于创建/更新) - 现在变得极其简单！
 			// =================================================================
 			CreateMap<AssignmentDto, Assignment>();
-			CreateMap<AssignmentStructDto, AssignmentStruct>();
 
 			// 新增！从新的 DTO 到实体的映射
 			CreateMap<AssignmentQuestionDto, AssignmentQuestion>();

TechHelper.Server/Context/Configuration/AssignmentGroupConfiguration.cs

@@ -1,83 +0,0 @@
-using Entities.Contracts;
-using Microsoft.EntityFrameworkCore.Metadata.Builders;
-using Microsoft.EntityFrameworkCore;
-
-namespace TechHelper.Context.Configuration
-{
-	public class AssignmentGroupConfiguration : IEntityTypeConfiguration<AssignmentStruct>
-	{
-		public void Configure(EntityTypeBuilder<AssignmentStruct> builder)
-		{
-			// 1. 设置表名
-			// 将此实体映射到数据库中名为 "assignment_detail" 的表。
-			builder.ToTable("assignment_group");
-
-			// 2. 配置主键
-			// Id 属性作为主键。
-			builder.HasKey(ag => ag.Id);
-
-			// 3. 配置列名、必需性、长度和默认值
-
-			// 配置 Id 属性对应的数据库列名为 "id"。
-			builder.Property(ag => ag.Id)
-				.HasColumnName("id");
-			// EF Core 默认 Guid 类型主键由应用程序生成，因此无需 ValueGeneratedOnAdd()。
-
-			// 配置 AssignmentId 属性对应的数据库列名为 "assignment"，并设置为必需字段。
-			builder.Property(ag => ag.AssignmentId)
-				.HasColumnName("assignment");
-
-			// 配置 Title 属性对应的数据库列名为 "title"，设置为必需字段，并设置最大长度。
-			builder.Property(ag => ag.Title)
-				.HasColumnName("title")
-				.IsRequired()
-				.HasMaxLength(65535); // 对应 MaxLength(65535)
-
-			// 配置 Descript 属性对应的数据库列名为 "descript"，并设置最大长度。
-			builder.Property(ag => ag.Description)
-				.HasColumnName("descript")
-				.HasMaxLength(65535); // 对应 MaxLength(65535)
-
-			// 配置 TotalPoints 属性对应的数据库列名为 "total_points"。
-			// TotalPoints 是 decimal? 类型，默认就是可选的，无需 IsRequired(false)。
-			builder.Property(ag => ag.Score)
-				.HasColumnName("total_points");
-
-			// 配置 Number 属性对应的数据库列名为 "number"。
-			builder.Property(ag => ag.Index)
-				.HasColumnName("number")
-				.IsRequired(); // byte 默认非空，显式 IsRequired 增加可读性。
-
-			// 配置 ParentGroup 属性对应的数据库列名为 "sub_group"。
-			// ParentGroup 是 Guid? 类型，默认就是可选的，无需 IsRequired(false)。
-			builder.Property(ag => ag.ParentStructId)
-				.HasColumnName("parent_group")
-				.IsRequired(false);
-
-			// 配置 IsDeleted 属性对应的数据库列名为 "deleted"，并设置默认值为 false。
-			builder.Property(ag => ag.IsDeleted)
-				.HasColumnName("deleted")
-				.HasDefaultValue(false); // 适用于软删除策略
-
-			// 4. 配置导航属性和外键关系
-
-			// 配置 AssignmentGroup 到 Assignment 的多对一关系。
-			// 一个 AssignmentGroup 记录属于一个 Assignment。
-			builder.HasOne(ag => ag.Assignment) // 当前 AssignmentGroup 有一个 Assignment
-				.WithOne(a => a.ExamStruct) // 该 Assignment 可以有多个 AssignmentGroup 记录
-				.HasForeignKey<AssignmentStruct>(ag => ag.AssignmentId); // 通过 AssignmentId 建立外键
-
-
-			// 配置 AssignmentGroup 到 AssignmentGroup 的自引用关系（父子关系）。
-			// 一个 AssignmentGroup 可以有一个父 AssignmentGroup (SubAssignmentGroup)。
-			// 假设父 AssignmentGroup 实体中有一个名为 ChildAssignmentGroups 的集合属性来表示它所包含的所有子组。
-			builder.HasOne(ag => ag.ParentStruct) // 当前 AssignmentGroup 有一个父 AssignmentGroup
-				.WithMany(parentAg => parentAg.ChildrenGroups) // 该父 AssignmentGroup 可以有多个子 AssignmentGroup
-				.HasForeignKey(ag => ag.ParentStructId) // 通过 SubGroup 建立外键
-				.IsRequired(false) // SubGroup 是可空的 (Guid?)，所以这个关系是可选的。
-				.OnDelete(DeleteBehavior.SetNull); // 当父 AssignmentGroup 被删除时，其子 AssignmentGroup 的 SubGroup 外键将被设置为 NULL。
-												   // 如果你希望父组被删除时子组不能脱离父组（即不允许父组被删除），
-												   // 可以使用 DeleteBehavior.Restrict 或 DeleteBehavior.NoAction。
-		}
-	}
-}

TechHelper.Server/Context/Configuration/AssignmentQuestionConfiguration.cs

@@ -38,12 +38,6 @@ namespace TechHelper.Context.Configuration
 			builder.Property(aq => aq.Score)
 				.HasColumnName("score");
 
-			// 配置 AssignmentGroupId 列
-			// 该列在数据库中名为 "detail_id"
-			builder.Property(aq => aq.AssignmentStructId)
-				.HasColumnName("group_id")
-				.IsRequired();
-
 			builder.Property(aq => aq.IsDeleted)
 				.HasColumnName("deleted")
 				.HasDefaultValue(false); // 适用于软删除策略
@@ -60,17 +54,11 @@ namespace TechHelper.Context.Configuration
 				.HasForeignKey(aq => aq.QuestionId)       // 外键是 AssignmentQuestion.QuestionId
 				.OnDelete(DeleteBehavior.Cascade);        // 当 Question 被删除时，相关的 AssignmentQuestion 也级联删除。
 
-			// ---
+
-			// 配置 AssignmentQuestion 到 AssignmentGroup 的关系 (多对一)
+			builder.HasOne(aq => aq.QuestionContext)
-			// 一个 AssignmentQuestion 属于一个 AssignmentGroup。
+				.WithMany(qc => qc.Questions)
-			//
+				.HasForeignKey(aq => aq.QuestionContextId)
-			// 你的 `AssignmentQuestion` 类现在有了 `public AssignmentGroup AssignmentGroup { get; set; }`
+				.OnDelete(DeleteBehavior.SetNull);
-			// 这是一个非常好的改进，它与 `AssignmentGroupId` 外键完美匹配。
-			// 假设 `AssignmentGroup` 实体中有一个名为 `AssignmentQuestions` 的 `ICollection<AssignmentQuestion>` 集合属性。
-			builder.HasOne(aq => aq.AssignmentStruct)        // 当前 AssignmentQuestion 有一个 AssignmentGroup
-				.WithMany(ag => ag.AssignmentQuestions)     // 那个 AssignmentGroup 可以有多个 AssignmentQuestion
-				.HasForeignKey(aq => aq.AssignmentStructId)  // 外键是 AssignmentQuestion.AssignmentGroupId (列名 detail_id)
-				.OnDelete(DeleteBehavior.Cascade);          // 当 AssignmentGroup 被删除时，相关的 AssignmentQuestion 也级联删除。
 
 			// ---
 			// 配置 AssignmentQuestion 到 SubmissionDetail 的关系 (一对多)

TechHelper.Server/Context/Configuration/QuestionConfiguration.cs

@@ -111,11 +111,6 @@ namespace TechHelper.Context.Configuration
 				.HasForeignKey(q => q.LessonId)
 				.OnDelete(DeleteBehavior.SetNull);
 
-			builder.HasOne(q => q.ParentQuestion)
-				.WithMany(pq => pq.ChildrenQuestion)
-				.IsRequired(false)
-				.HasForeignKey(q => q.ParentQuestionId)
-				.OnDelete(DeleteBehavior.SetNull);
 
 		}
 	}

TechHelper.Server/Migrations/20250620104952_init.Designer.cs

@@ -12,7 +12,7 @@ using TechHelper.Context;
 namespace TechHelper.Server.Migrations
 {
     [DbContext(typeof(ApplicationContext))]
-    [Migration("20250619070929_init")]
+    [Migration("20250620104952_init")]
     partial class init
     {
         /// <inheritdoc />
@@ -161,9 +161,9 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("char(36)")
                         .HasColumnName("id");
 
-                    b.Property<Guid>("AssignmentGroupId")
+                    b.Property<Guid?>("AssignmentId")
                         .HasColumnType("char(36)")
-                        .HasColumnName("group_id");
+                        .HasColumnName("assignment");
 
                     b.Property<DateTime>("CreatedAt")
                         .HasColumnType("datetime(6)")
@@ -179,7 +179,15 @@ namespace TechHelper.Server.Migrations
                         .HasDefaultValue(false)
                         .HasColumnName("deleted");
 
-                    b.Property<Guid>("QuestionId")
+                    b.Property<Guid?>("ParentAssignmentQuestionId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("parent_question_group_id");
+
+                    b.Property<Guid?>("QuestionContextId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("description");
+
+                    b.Property<Guid?>("QuestionId")
                         .HasColumnType("char(36)")
                         .HasColumnName("question_id");
 
@@ -187,58 +195,13 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("float")
                         .HasColumnName("score");
 
-                    b.HasKey("Id");
+                    b.Property<byte>("StructType")
-
-                    b.HasIndex("AssignmentGroupId");
-
-                    b.HasIndex("QuestionId");
-
-                    b.ToTable("assignment_questions", (string)null);
-                });
-
-            modelBuilder.Entity("Entities.Contracts.AssignmentStruct", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("char(36)")
-                        .HasColumnName("id");
-
-                    b.Property<Guid?>("AssignmentId")
-                        .HasColumnType("char(36)")
-                        .HasColumnName("assignment");
-
-                    b.Property<string>("Description")
-                        .IsRequired()
-                        .HasMaxLength(65535)
-                        .HasColumnType("longtext")
-                        .HasColumnName("descript");
-
-                    b.Property<byte>("Index")
                         .HasColumnType("tinyint unsigned")
-                        .HasColumnName("number");
+                        .HasColumnName("group_state");
-
-                    b.Property<bool>("IsDeleted")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("tinyint(1)")
-                        .HasDefaultValue(false)
-                        .HasColumnName("deleted");
-
-                    b.Property<byte>("Layout")
-                        .HasColumnType("tinyint unsigned")
-                        .HasColumnName("layout");
-
-                    b.Property<Guid?>("ParentGroupId")
-                        .HasColumnType("char(36)")
-                        .HasColumnName("parent_group");
-
-                    b.Property<float?>("Score")
-                        .HasColumnType("float")
-                        .HasColumnName("total_points");
 
                     b.Property<string>("Title")
-                        .IsRequired()
+                        .HasMaxLength(1024)
-                        .HasMaxLength(65535)
+                        .HasColumnType("varchar(1024)")
-                        .HasColumnType("longtext")
                         .HasColumnName("title");
 
                     b.HasKey("Id");
@@ -246,9 +209,13 @@ namespace TechHelper.Server.Migrations
                     b.HasIndex("AssignmentId")
                         .IsUnique();
 
-                    b.HasIndex("ParentGroupId");
+                    b.HasIndex("ParentAssignmentQuestionId");
 
-                    b.ToTable("assignment_group", (string)null);
+                    b.HasIndex("QuestionContextId");
+
+                    b.HasIndex("QuestionId");
+
+                    b.ToTable("assignment_questions", (string)null);
                 });
 
             modelBuilder.Entity("Entities.Contracts.Class", b =>
@@ -408,6 +375,7 @@ namespace TechHelper.Server.Migrations
 
                     b.Property<string>("Question")
                         .IsRequired()
+                        .HasMaxLength(65535)
                         .HasColumnType("longtext");
 
                     b.HasKey("Id");
@@ -445,10 +413,6 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("tinyint unsigned")
                         .HasColumnName("difficulty_level");
 
-                    b.Property<byte>("GroupState")
-                        .HasColumnType("tinyint unsigned")
-                        .HasColumnName("group_state");
-
                     b.Property<bool>("IsDeleted")
                         .ValueGeneratedOnAdd()
                         .HasColumnType("tinyint(1)")
@@ -467,10 +431,6 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("longtext")
                         .HasColumnName("options");
 
-                    b.Property<Guid?>("ParentQuestionId")
-                        .HasColumnType("char(36)")
-                        .HasColumnName("parent_question_group_id");
-
                     b.Property<byte>("SubjectArea")
                         .HasMaxLength(100)
                         .HasColumnType("tinyint unsigned")
@@ -501,14 +461,27 @@ namespace TechHelper.Server.Migrations
 
                     b.HasIndex("LessonId");
 
-                    b.HasIndex("ParentQuestionId");
-
                     b.HasIndex("Title")
                         .HasAnnotation("MySql:IndexPrefixLength", new[] { 20 });
 
                     b.ToTable("questions", (string)null);
                 });
 
+            modelBuilder.Entity("Entities.Contracts.QuestionContext", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("longtext");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("QuestionContexts");
+                });
+
             modelBuilder.Entity("Entities.Contracts.Submission", b =>
                 {
                     b.Property<Guid>("Id")
@@ -774,19 +747,19 @@ namespace TechHelper.Server.Migrations
                     b.HasData(
                         new
                         {
-                            Id = new Guid("895d8f32-714e-4a14-bd97-8fa262b83172"),
+                            Id = new Guid("577dbfe8-7b77-4ead-9386-678f02dea5f4"),
                             Name = "Student",
                             NormalizedName = "STUDENT"
                         },
                         new
                         {
-                            Id = new Guid("d182c396-c656-42da-965a-d93c17a1f74f"),
+                            Id = new Guid("04b04eed-32b9-4eb0-b5f5-a97bb4626718"),
                             Name = "Teacher",
                             NormalizedName = "TEACHER"
                         },
                         new
                         {
-                            Id = new Guid("4e65fab9-3315-4474-b92c-bdab5a617e65"),
+                            Id = new Guid("82354e4d-902d-4dd6-9790-6ef50ba9bc11"),
                             Name = "Administrator",
                             NormalizedName = "ADMINISTRATOR"
                         });
@@ -942,37 +915,31 @@ namespace TechHelper.Server.Migrations
 
             modelBuilder.Entity("Entities.Contracts.AssignmentQuestion", b =>
                 {
-                    b.HasOne("Entities.Contracts.AssignmentStruct", "AssignmentGroup")
+                    b.HasOne("Entities.Contracts.Assignment", "Assignment")
-                        .WithMany("AssignmentQuestions")
+                        .WithOne("ExamStruct")
-                        .HasForeignKey("AssignmentGroupId")
+                        .HasForeignKey("Entities.Contracts.AssignmentQuestion", "AssignmentId");
-                        .OnDelete(DeleteBehavior.Cascade)
+
-                        .IsRequired();
+                    b.HasOne("Entities.Contracts.AssignmentQuestion", "ParentAssignmentQuestion")
+                        .WithMany("ChildrenAssignmentQuestion")
+                        .HasForeignKey("ParentAssignmentQuestionId");
+
+                    b.HasOne("Entities.Contracts.QuestionContext", "QuestionContext")
+                        .WithMany("Questions")
+                        .HasForeignKey("QuestionContextId")
+                        .OnDelete(DeleteBehavior.SetNull);
 
                     b.HasOne("Entities.Contracts.Question", "Question")
                         .WithMany("AssignmentQuestions")
                         .HasForeignKey("QuestionId")
-                        .OnDelete(DeleteBehavior.Cascade)
+                        .OnDelete(DeleteBehavior.Cascade);
-                        .IsRequired();
-
-                    b.Navigation("AssignmentGroup");
-
-                    b.Navigation("Question");
-                });
-
-            modelBuilder.Entity("Entities.Contracts.AssignmentStruct", b =>
-                {
-                    b.HasOne("Entities.Contracts.Assignment", "Assignment")
-                        .WithOne("ExamStruct")
-                        .HasForeignKey("Entities.Contracts.AssignmentStruct", "AssignmentId");
-
-                    b.HasOne("Entities.Contracts.AssignmentStruct", "ParentGroup")
-                        .WithMany("ChildrenGroups")
-                        .HasForeignKey("ParentGroupId")
-                        .OnDelete(DeleteBehavior.SetNull);
 
                     b.Navigation("Assignment");
 
-                    b.Navigation("ParentGroup");
+                    b.Navigation("ParentAssignmentQuestion");
+
+                    b.Navigation("Question");
+
+                    b.Navigation("QuestionContext");
                 });
 
             modelBuilder.Entity("Entities.Contracts.Class", b =>
@@ -1075,18 +1042,11 @@ namespace TechHelper.Server.Migrations
                         .HasForeignKey("LessonId")
                         .OnDelete(DeleteBehavior.SetNull);
 
-                    b.HasOne("Entities.Contracts.Question", "ParentQuestion")
-                        .WithMany("ChildrenQuestion")
-                        .HasForeignKey("ParentQuestionId")
-                        .OnDelete(DeleteBehavior.SetNull);
-
                     b.Navigation("Creator");
 
                     b.Navigation("KeyPoint");
 
                     b.Navigation("Lesson");
-
-                    b.Navigation("ParentQuestion");
                 });
 
             modelBuilder.Entity("Entities.Contracts.Submission", b =>
@@ -1207,16 +1167,11 @@ namespace TechHelper.Server.Migrations
 
             modelBuilder.Entity("Entities.Contracts.AssignmentQuestion", b =>
                 {
+                    b.Navigation("ChildrenAssignmentQuestion");
+
                     b.Navigation("SubmissionDetails");
                 });
 
-            modelBuilder.Entity("Entities.Contracts.AssignmentStruct", b =>
-                {
-                    b.Navigation("AssignmentQuestions");
-
-                    b.Navigation("ChildrenGroups");
-                });
-
             modelBuilder.Entity("Entities.Contracts.Class", b =>
                 {
                     b.Navigation("AssignmentClasses");
@@ -1243,8 +1198,11 @@ namespace TechHelper.Server.Migrations
             modelBuilder.Entity("Entities.Contracts.Question", b =>
                 {
                     b.Navigation("AssignmentQuestions");
+                });
 
-                    b.Navigation("ChildrenQuestion");
+            modelBuilder.Entity("Entities.Contracts.QuestionContext", b =>
+                {
+                    b.Navigation("Questions");
                 });
 
             modelBuilder.Entity("Entities.Contracts.Submission", b =>

TechHelper.Server/Migrations/20250620104952_init.cs

@@ -77,6 +77,20 @@ namespace TechHelper.Server.Migrations
                 })
                 .Annotation("MySql:CharSet", "utf8mb4");
 
+            migrationBuilder.CreateTable(
+                name: "QuestionContexts",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
+                    Description = table.Column<string>(type: "longtext", nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_QuestionContexts", x => x.Id);
+                })
+                .Annotation("MySql:CharSet", "utf8mb4");
+
             migrationBuilder.CreateTable(
                 name: "textbook",
                 columns: table => new
@@ -327,39 +341,6 @@ namespace TechHelper.Server.Migrations
                 })
                 .Annotation("MySql:CharSet", "utf8mb4");
 
-            migrationBuilder.CreateTable(
-                name: "assignment_group",
-                columns: table => new
-                {
-                    id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
-                    assignment = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
-                    title = table.Column<string>(type: "longtext", maxLength: 65535, nullable: false)
-                        .Annotation("MySql:CharSet", "utf8mb4"),
-                    descript = table.Column<string>(type: "longtext", maxLength: 65535, nullable: false)
-                        .Annotation("MySql:CharSet", "utf8mb4"),
-                    layout = table.Column<byte>(type: "tinyint unsigned", nullable: false),
-                    total_points = table.Column<float>(type: "float", nullable: true),
-                    number = table.Column<byte>(type: "tinyint unsigned", nullable: false),
-                    parent_group = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
-                    deleted = table.Column<bool>(type: "tinyint(1)", nullable: false, defaultValue: false)
-                },
-                constraints: table =>
-                {
-                    table.PrimaryKey("PK_assignment_group", x => x.id);
-                    table.ForeignKey(
-                        name: "FK_assignment_group_assignment_group_parent_group",
-                        column: x => x.parent_group,
-                        principalTable: "assignment_group",
-                        principalColumn: "id",
-                        onDelete: ReferentialAction.SetNull);
-                    table.ForeignKey(
-                        name: "FK_assignment_group_assignments_assignment",
-                        column: x => x.assignment,
-                        principalTable: "assignments",
-                        principalColumn: "id");
-                })
-                .Annotation("MySql:CharSet", "utf8mb4");
-
             migrationBuilder.CreateTable(
                 name: "submissions",
                 columns: table => new
@@ -507,7 +488,7 @@ namespace TechHelper.Server.Migrations
                 columns: table => new
                 {
                     Id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
-                    Question = table.Column<string>(type: "longtext", nullable: false)
+                    Question = table.Column<string>(type: "longtext", maxLength: 65535, nullable: false)
                         .Annotation("MySql:CharSet", "utf8mb4"),
                     LessonID = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci")
                 },
@@ -535,12 +516,10 @@ namespace TechHelper.Server.Migrations
                     question_type = table.Column<byte>(type: "tinyint unsigned", maxLength: 20, nullable: false),
                     difficulty_level = table.Column<byte>(type: "tinyint unsigned", maxLength: 10, nullable: false),
                     subject_area = table.Column<byte>(type: "tinyint unsigned", maxLength: 100, nullable: false),
-                    group_state = table.Column<byte>(type: "tinyint unsigned", nullable: false),
                     options = table.Column<string>(type: "longtext", nullable: true)
                         .Annotation("MySql:CharSet", "utf8mb4"),
                     key_point = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
                     lesson = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
-                    parent_question_group_id = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
                     created_by = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
                     created_at = table.Column<DateTime>(type: "datetime(6)", nullable: false)
                         .Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
@@ -568,12 +547,6 @@ namespace TechHelper.Server.Migrations
                         principalTable: "lesson",
                         principalColumn: "Id",
                         onDelete: ReferentialAction.SetNull);
-                    table.ForeignKey(
-                        name: "FK_questions_questions_parent_question_group_id",
-                        column: x => x.parent_question_group_id,
-                        principalTable: "questions",
-                        principalColumn: "id",
-                        onDelete: ReferentialAction.SetNull);
                 })
                 .Annotation("MySql:CharSet", "utf8mb4");
 
@@ -582,9 +555,14 @@ namespace TechHelper.Server.Migrations
                 columns: table => new
                 {
                     id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
-                    question_id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
+                    question_id = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
-                    group_id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
+                    assignment = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
+                    title = table.Column<string>(type: "varchar(1024)", maxLength: 1024, nullable: true)
+                        .Annotation("MySql:CharSet", "utf8mb4"),
+                    description = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
                     question_number = table.Column<byte>(type: "tinyint unsigned", nullable: false),
+                    parent_question_group_id = table.Column<Guid>(type: "char(36)", nullable: true, collation: "ascii_general_ci"),
+                    group_state = table.Column<byte>(type: "tinyint unsigned", nullable: false),
                     created_at = table.Column<DateTime>(type: "datetime(6)", nullable: false),
                     score = table.Column<float>(type: "float", nullable: true),
                     deleted = table.Column<bool>(type: "tinyint(1)", nullable: false, defaultValue: false)
@@ -593,11 +571,21 @@ namespace TechHelper.Server.Migrations
                 {
                     table.PrimaryKey("PK_assignment_questions", x => x.id);
                     table.ForeignKey(
-                        name: "FK_assignment_questions_assignment_group_group_id",
+                        name: "FK_assignment_questions_QuestionContexts_description",
-                        column: x => x.group_id,
+                        column: x => x.description,
-                        principalTable: "assignment_group",
+                        principalTable: "QuestionContexts",
-                        principalColumn: "id",
+                        principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.SetNull);
+                    table.ForeignKey(
+                        name: "FK_assignment_questions_assignment_questions_parent_question_gr~",
+                        column: x => x.parent_question_group_id,
+                        principalTable: "assignment_questions",
+                        principalColumn: "id");
+                    table.ForeignKey(
+                        name: "FK_assignment_questions_assignments_assignment",
+                        column: x => x.assignment,
+                        principalTable: "assignments",
+                        principalColumn: "id");
                     table.ForeignKey(
                         name: "FK_assignment_questions_questions_question_id",
                         column: x => x.question_id,
@@ -655,9 +643,9 @@ namespace TechHelper.Server.Migrations
                 columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
                 values: new object[,]
                 {
-                    { new Guid("4e65fab9-3315-4474-b92c-bdab5a617e65"), null, "Administrator", "ADMINISTRATOR" },
+                    { new Guid("04b04eed-32b9-4eb0-b5f5-a97bb4626718"), null, "Teacher", "TEACHER" },
-                    { new Guid("895d8f32-714e-4a14-bd97-8fa262b83172"), null, "Student", "STUDENT" },
+                    { new Guid("577dbfe8-7b77-4ead-9386-678f02dea5f4"), null, "Student", "STUDENT" },
-                    { new Guid("d182c396-c656-42da-965a-d93c17a1f74f"), null, "Teacher", "TEACHER" }
+                    { new Guid("82354e4d-902d-4dd6-9790-6ef50ba9bc11"), null, "Administrator", "ADMINISTRATOR" }
                 });
 
             migrationBuilder.CreateIndex(
@@ -708,20 +696,20 @@ namespace TechHelper.Server.Migrations
                 column: "class_id");
 
             migrationBuilder.CreateIndex(
-                name: "IX_assignment_group_assignment",
+                name: "IX_assignment_questions_assignment",
-                table: "assignment_group",
+                table: "assignment_questions",
                 column: "assignment",
                 unique: true);
 
             migrationBuilder.CreateIndex(
-                name: "IX_assignment_group_parent_group",
+                name: "IX_assignment_questions_description",
-                table: "assignment_group",
+                table: "assignment_questions",
-                column: "parent_group");
+                column: "description");
 
             migrationBuilder.CreateIndex(
-                name: "IX_assignment_questions_group_id",
+                name: "IX_assignment_questions_parent_question_group_id",
                 table: "assignment_questions",
-                column: "group_id");
+                column: "parent_question_group_id");
 
             migrationBuilder.CreateIndex(
                 name: "IX_assignment_questions_question_id",
@@ -783,11 +771,6 @@ namespace TechHelper.Server.Migrations
                 table: "questions",
                 column: "lesson");
 
-            migrationBuilder.CreateIndex(
-                name: "IX_questions_parent_question_group_id",
-                table: "questions",
-                column: "parent_question_group_id");
-
             migrationBuilder.CreateIndex(
                 name: "IX_questions_question_text",
                 table: "questions",
@@ -874,7 +857,7 @@ namespace TechHelper.Server.Migrations
                 name: "submissions");
 
             migrationBuilder.DropTable(
-                name: "assignment_group");
+                name: "QuestionContexts");
 
             migrationBuilder.DropTable(
                 name: "questions");

TechHelper.Server/Migrations/ApplicationContextModelSnapshot.cs

@@ -158,9 +158,9 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("char(36)")
                         .HasColumnName("id");
 
-                    b.Property<Guid>("AssignmentGroupId")
+                    b.Property<Guid?>("AssignmentId")
                         .HasColumnType("char(36)")
-                        .HasColumnName("group_id");
+                        .HasColumnName("assignment");
 
                     b.Property<DateTime>("CreatedAt")
                         .HasColumnType("datetime(6)")
@@ -176,7 +176,15 @@ namespace TechHelper.Server.Migrations
                         .HasDefaultValue(false)
                         .HasColumnName("deleted");
 
-                    b.Property<Guid>("QuestionId")
+                    b.Property<Guid?>("ParentAssignmentQuestionId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("parent_question_group_id");
+
+                    b.Property<Guid?>("QuestionContextId")
+                        .HasColumnType("char(36)")
+                        .HasColumnName("description");
+
+                    b.Property<Guid?>("QuestionId")
                         .HasColumnType("char(36)")
                         .HasColumnName("question_id");
 
@@ -184,58 +192,13 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("float")
                         .HasColumnName("score");
 
-                    b.HasKey("Id");
+                    b.Property<byte>("StructType")
-
-                    b.HasIndex("AssignmentGroupId");
-
-                    b.HasIndex("QuestionId");
-
-                    b.ToTable("assignment_questions", (string)null);
-                });
-
-            modelBuilder.Entity("Entities.Contracts.AssignmentStruct", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("char(36)")
-                        .HasColumnName("id");
-
-                    b.Property<Guid?>("AssignmentId")
-                        .HasColumnType("char(36)")
-                        .HasColumnName("assignment");
-
-                    b.Property<string>("Description")
-                        .IsRequired()
-                        .HasMaxLength(65535)
-                        .HasColumnType("longtext")
-                        .HasColumnName("descript");
-
-                    b.Property<byte>("Index")
                         .HasColumnType("tinyint unsigned")
-                        .HasColumnName("number");
+                        .HasColumnName("group_state");
-
-                    b.Property<bool>("IsDeleted")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("tinyint(1)")
-                        .HasDefaultValue(false)
-                        .HasColumnName("deleted");
-
-                    b.Property<byte>("Layout")
-                        .HasColumnType("tinyint unsigned")
-                        .HasColumnName("layout");
-
-                    b.Property<Guid?>("ParentGroupId")
-                        .HasColumnType("char(36)")
-                        .HasColumnName("parent_group");
-
-                    b.Property<float?>("Score")
-                        .HasColumnType("float")
-                        .HasColumnName("total_points");
 
                     b.Property<string>("Title")
-                        .IsRequired()
+                        .HasMaxLength(1024)
-                        .HasMaxLength(65535)
+                        .HasColumnType("varchar(1024)")
-                        .HasColumnType("longtext")
                         .HasColumnName("title");
 
                     b.HasKey("Id");
@@ -243,9 +206,13 @@ namespace TechHelper.Server.Migrations
                     b.HasIndex("AssignmentId")
                         .IsUnique();
 
-                    b.HasIndex("ParentGroupId");
+                    b.HasIndex("ParentAssignmentQuestionId");
 
-                    b.ToTable("assignment_group", (string)null);
+                    b.HasIndex("QuestionContextId");
+
+                    b.HasIndex("QuestionId");
+
+                    b.ToTable("assignment_questions", (string)null);
                 });
 
             modelBuilder.Entity("Entities.Contracts.Class", b =>
@@ -405,6 +372,7 @@ namespace TechHelper.Server.Migrations
 
                     b.Property<string>("Question")
                         .IsRequired()
+                        .HasMaxLength(65535)
                         .HasColumnType("longtext");
 
                     b.HasKey("Id");
@@ -442,10 +410,6 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("tinyint unsigned")
                         .HasColumnName("difficulty_level");
 
-                    b.Property<byte>("GroupState")
-                        .HasColumnType("tinyint unsigned")
-                        .HasColumnName("group_state");
-
                     b.Property<bool>("IsDeleted")
                         .ValueGeneratedOnAdd()
                         .HasColumnType("tinyint(1)")
@@ -464,10 +428,6 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("longtext")
                         .HasColumnName("options");
 
-                    b.Property<Guid?>("ParentQuestionId")
-                        .HasColumnType("char(36)")
-                        .HasColumnName("parent_question_group_id");
-
                     b.Property<byte>("SubjectArea")
                         .HasMaxLength(100)
                         .HasColumnType("tinyint unsigned")
@@ -498,14 +458,27 @@ namespace TechHelper.Server.Migrations
 
                     b.HasIndex("LessonId");
 
-                    b.HasIndex("ParentQuestionId");
-
                     b.HasIndex("Title")
                         .HasAnnotation("MySql:IndexPrefixLength", new[] { 20 });
 
                     b.ToTable("questions", (string)null);
                 });
 
+            modelBuilder.Entity("Entities.Contracts.QuestionContext", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("longtext");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("QuestionContexts");
+                });
+
             modelBuilder.Entity("Entities.Contracts.Submission", b =>
                 {
                     b.Property<Guid>("Id")
@@ -771,19 +744,19 @@ namespace TechHelper.Server.Migrations
                     b.HasData(
                         new
                         {
-                            Id = new Guid("895d8f32-714e-4a14-bd97-8fa262b83172"),
+                            Id = new Guid("577dbfe8-7b77-4ead-9386-678f02dea5f4"),
                             Name = "Student",
                             NormalizedName = "STUDENT"
                         },
                         new
                         {
-                            Id = new Guid("d182c396-c656-42da-965a-d93c17a1f74f"),
+                            Id = new Guid("04b04eed-32b9-4eb0-b5f5-a97bb4626718"),
                             Name = "Teacher",
                             NormalizedName = "TEACHER"
                         },
                         new
                         {
-                            Id = new Guid("4e65fab9-3315-4474-b92c-bdab5a617e65"),
+                            Id = new Guid("82354e4d-902d-4dd6-9790-6ef50ba9bc11"),
                             Name = "Administrator",
                             NormalizedName = "ADMINISTRATOR"
                         });
@@ -939,37 +912,31 @@ namespace TechHelper.Server.Migrations
 
             modelBuilder.Entity("Entities.Contracts.AssignmentQuestion", b =>
                 {
-                    b.HasOne("Entities.Contracts.AssignmentStruct", "AssignmentGroup")
+                    b.HasOne("Entities.Contracts.Assignment", "Assignment")
-                        .WithMany("AssignmentQuestions")
+                        .WithOne("ExamStruct")
-                        .HasForeignKey("AssignmentGroupId")
+                        .HasForeignKey("Entities.Contracts.AssignmentQuestion", "AssignmentId");
-                        .OnDelete(DeleteBehavior.Cascade)
+
-                        .IsRequired();
+                    b.HasOne("Entities.Contracts.AssignmentQuestion", "ParentAssignmentQuestion")
+                        .WithMany("ChildrenAssignmentQuestion")
+                        .HasForeignKey("ParentAssignmentQuestionId");
+
+                    b.HasOne("Entities.Contracts.QuestionContext", "QuestionContext")
+                        .WithMany("Questions")
+                        .HasForeignKey("QuestionContextId")
+                        .OnDelete(DeleteBehavior.SetNull);
 
                     b.HasOne("Entities.Contracts.Question", "Question")
                         .WithMany("AssignmentQuestions")
                         .HasForeignKey("QuestionId")
-                        .OnDelete(DeleteBehavior.Cascade)
+                        .OnDelete(DeleteBehavior.Cascade);
-                        .IsRequired();
-
-                    b.Navigation("AssignmentGroup");
-
-                    b.Navigation("Question");
-                });
-
-            modelBuilder.Entity("Entities.Contracts.AssignmentStruct", b =>
-                {
-                    b.HasOne("Entities.Contracts.Assignment", "Assignment")
-                        .WithOne("ExamStruct")
-                        .HasForeignKey("Entities.Contracts.AssignmentStruct", "AssignmentId");
-
-                    b.HasOne("Entities.Contracts.AssignmentStruct", "ParentGroup")
-                        .WithMany("ChildrenGroups")
-                        .HasForeignKey("ParentGroupId")
-                        .OnDelete(DeleteBehavior.SetNull);
 
                     b.Navigation("Assignment");
 
-                    b.Navigation("ParentGroup");
+                    b.Navigation("ParentAssignmentQuestion");
+
+                    b.Navigation("Question");
+
+                    b.Navigation("QuestionContext");
                 });
 
             modelBuilder.Entity("Entities.Contracts.Class", b =>
@@ -1072,18 +1039,11 @@ namespace TechHelper.Server.Migrations
                         .HasForeignKey("LessonId")
                         .OnDelete(DeleteBehavior.SetNull);
 
-                    b.HasOne("Entities.Contracts.Question", "ParentQuestion")
-                        .WithMany("ChildrenQuestion")
-                        .HasForeignKey("ParentQuestionId")
-                        .OnDelete(DeleteBehavior.SetNull);
-
                     b.Navigation("Creator");
 
                     b.Navigation("KeyPoint");
 
                     b.Navigation("Lesson");
-
-                    b.Navigation("ParentQuestion");
                 });
 
             modelBuilder.Entity("Entities.Contracts.Submission", b =>
@@ -1204,16 +1164,11 @@ namespace TechHelper.Server.Migrations
 
             modelBuilder.Entity("Entities.Contracts.AssignmentQuestion", b =>
                 {
+                    b.Navigation("ChildrenAssignmentQuestion");
+
                     b.Navigation("SubmissionDetails");
                 });
 
-            modelBuilder.Entity("Entities.Contracts.AssignmentStruct", b =>
-                {
-                    b.Navigation("AssignmentQuestions");
-
-                    b.Navigation("ChildrenGroups");
-                });
-
             modelBuilder.Entity("Entities.Contracts.Class", b =>
                 {
                     b.Navigation("AssignmentClasses");
@@ -1240,8 +1195,11 @@ namespace TechHelper.Server.Migrations
             modelBuilder.Entity("Entities.Contracts.Question", b =>
                 {
                     b.Navigation("AssignmentQuestions");
+                });
 
-                    b.Navigation("ChildrenQuestion");
+            modelBuilder.Entity("Entities.Contracts.QuestionContext", b =>
+                {
+                    b.Navigation("Questions");
                 });
 
             modelBuilder.Entity("Entities.Contracts.Submission", b =>

TechHelper.Server/Program.cs

@@ -27,12 +27,12 @@ builder.Services.AddDbContext<ApplicationContext>(options =>
 ).AddUnitOfWork<ApplicationContext>()
 .AddCustomRepository<Assignment, AssignmentRepository>()
 .AddCustomRepository<AssignmentAttachment, AssignmentAttachmentRepository>()
-.AddCustomRepository<AssignmentStruct, AssignmentGroupRepository>()
 .AddCustomRepository<AssignmentQuestion, AssignmentQuestionRepository>()
 .AddCustomRepository<Class, ClassRepository>()
 .AddCustomRepository<ClassStudent, ClassStudentRepository>()
 .AddCustomRepository<ClassTeacher, ClassTeacherRepository>()
 .AddCustomRepository<Question, QuestionRepository>()
+.AddCustomRepository<QuestionContext, QuestionContextRepository>()
 .AddCustomRepository<Submission, SubmissionRepository>();
 
 builder.Services.AddAutoMapper(typeof(AutoMapperProFile).Assembly);

TechHelper.Server/Repositories/ExamRepository.cs

@@ -10,14 +10,12 @@ namespace TechHelper.Server.Repositories
 	{
 		private readonly IUnitOfWork _unitOfWork;
 		private readonly IRepository<Assignment> _assignmentRepo;
-		private readonly IRepository<AssignmentStruct> _assignmentGroupRepo;
 		private readonly IRepository<Question> _questionRepo;
 
 		public ExamRepository(IUnitOfWork unitOfWork)
 		{
 			_unitOfWork = unitOfWork;
 			_assignmentRepo = _unitOfWork.GetRepository<Assignment>();
-			_assignmentGroupRepo = _unitOfWork.GetRepository<AssignmentStruct>();
 		}
 
 		public async Task<Assignment?> GetFullExamByIdAsync(Guid assignmentId)
@@ -27,30 +25,7 @@ namespace TechHelper.Server.Repositories
 		}
 
 
-		private async Task LoadSubGroupsRecursive(AssignmentStruct group)
-		{
-			// EF Core 已经加载了下一层，我们需要确保更深层次的加载
-			var groupWithChildren = await _assignmentGroupRepo.GetFirstOrDefaultAsync(
-				predicate: g => g.Id == group.Id,
-				include: source => source
-					.Include(g => g.ChildrenGroups.Where(cg => !cg.IsDeleted))
-						.ThenInclude(cg => cg.AssignmentQuestions.Where(aq => !aq.IsDeleted))
-						.ThenInclude(aq => aq.Question)
-					.Include(g => g.AssignmentQuestions.Where(aq => !aq.IsDeleted))
-						.ThenInclude(aq => aq.Question)
-			);
 
-			group.ChildrenGroups = groupWithChildren.ChildrenGroups;
-			group.AssignmentQuestions = groupWithChildren.AssignmentQuestions;
-
-			if (group.ChildrenGroups != null)
-			{
-				foreach (var child in group.ChildrenGroups)
-				{
-					await LoadSubGroupsRecursive(child);
-				}
-			}
-		}
 
 		public async Task<IEnumerable<Assignment>> GetExamPreviewsByUserAsync(Guid userId)
 		{
@@ -72,11 +47,6 @@ namespace TechHelper.Server.Repositories
 			}
 		}
 
-		public async Task AddAsync(AssignmentStruct assignment)
-		{
-
-		}
-
 		public async Task AddAsync(AssignmentQuestion assignment)
 		{
 		}

TechHelper.Server/Repositories/IExamRepository.cs

@@ -26,7 +26,6 @@ namespace TechHelper.Server.Repositories
 
 
 
-		Task AddAsync(AssignmentStruct assignment);
 
 		Task AddAsync(AssignmentQuestion assignment);
 

TechHelper.Server/Repository/QuestionContextRepository.cs

@@ -5,10 +5,13 @@ using TechHelper.Context;
 
 namespace TechHelper.Repository
 {
-	public class AssignmentGroupRepository : Repository<AssignmentStruct>, IRepository<AssignmentStruct>
+	public class QuestionContextRepository : Repository<QuestionContext>, IRepository<QuestionContext>
 	{
-		public AssignmentGroupRepository(ApplicationContext dbContext) : base(dbContext)
+		public QuestionContextRepository(ApplicationContext dbContext) : base(dbContext)
 		{
+			
 		}
+
+
 	}
 }

TechHelper.Server/Services/ExamService.cs

@@ -25,87 +25,43 @@ namespace TechHelper.Server.Services
 
 		public async Task<ApiResponse> CreateExamAsync(AssignmentDto assignmentDto)
 		{
-
+			try
-			Assignment newAssi = _mapper.Map<Assignment>(assignmentDto);
-
-			await _examRepository.AddAsync(newAssi);
-
-
-			var context =  _unitOfWork.GetDbContext<ApplicationContext>();
-
-			foreach (var entry in context.ChangeTracker.Entries())
 			{
-				if (entry.State == Microsoft.EntityFrameworkCore.EntityState.Added)
+
+				Assignment newAssi = _mapper.Map<Assignment>(assignmentDto);
+
+				await _examRepository.AddAsync(newAssi);
+
+
+				var context = _unitOfWork.GetDbContext<ApplicationContext>();
+
+				foreach (var entry in context.ChangeTracker.Entries())
 				{
-					if(entry.Entity is Question newQues)
+					if (entry.State == Microsoft.EntityFrameworkCore.EntityState.Added)
 					{
-						newQues.CreatorId = newAssi.CreatorId;
+						if (entry.Entity is Question newQues)
+						{
+							newQues.CreatorId = newAssi.CreatorId;
+						}
 					}
+
 				}
 
+
+				if (await _unitOfWork.SaveChangesAsync() > 0)
+				{
+					return ApiResponse.Success();
+				}
+
+				return ApiResponse.Error("保存失败");
 			}
-
+			catch (Exception ex)
-			await _unitOfWork.SaveChangesAsync();
-
-			return ApiResponse.Success();
-		}
-
-		private async void ParseStruct(AssignmentStructDto assignmentStruct, Guid ParentID)
-		{
-
-			var newStruct = _mapper.Map<AssignmentStruct>(assignmentStruct);
-			newStruct.ParentStructId = Guid.Empty == ParentID ? null : ParentID;
-			await _examRepository.AddAsync(newStruct);
-
-
-			foreach (var item in assignmentStruct.AssignmentQuestions)
 			{
-				var newQuestion = _mapper.Map<Question>(item);
+				return ApiResponse.Error(ex.Message);	
-				//newQuestion.ParentQuestionId = item.ParentQuestion == null ? null : item.ParentQuestion.Id;
-				await _examRepository.AddAsync(newQuestion);
-
-				//await ParseAssignmentQuestion(assignmentStruct, item, newQuestion);
-			}
-
-
-			foreach (var item in assignmentStruct.ChildrenGroups)
-			{
-				ParseStruct(item, assignmentStruct.Id);
 			}
 		}
 
-		private async Task ParseAssignmentQuestion(AssignmentStructDto assignmentStruct, QuestionDto item, Question newQuestion)
-		{
-			AssignmentQuestion newAssignQues = new AssignmentQuestion();
-			newAssignQues.QuestionId = newQuestion.Id;
-			newAssignQues.AssignmentStructId = assignmentStruct.Id;
-			newAssignQues.CreatedAt = DateTime.UtcNow;
-			newAssignQues.Score = item.Score;
-			await _examRepository.AddAsync(newAssignQues);
-		}
 
-		private void SetEntityIdsAndRelations(AssignmentStruct group, Guid? assignmentId, Guid creatorId)
-		{
-			group.Id = Guid.NewGuid();
-			group.AssignmentId = assignmentId;
-
-			foreach (var aq in group.AssignmentQuestions)
-			{
-				aq.Id = Guid.NewGuid();
-				aq.AssignmentStructId = group.Id;
-				aq.Question.Id = Guid.NewGuid();
-				aq.Question.CreatorId = creatorId;
-				aq.CreatedAt = DateTime.UtcNow;
-				// ... 其他默认值
-			}
-
-			foreach (var childGroup in group.ChildrenGroups)
-			{
-				// 子题组的 AssignmentId 为 null，通过 ParentGroup 关联
-				SetEntityIdsAndRelations(childGroup, null, creatorId);
-				childGroup.ParentStructId = group.Id;
-			}
-		}
 
 		public async Task<AssignmentDto> GetExamByIdAsync(Guid id)
 		{

TechHelper.Server/Services/IAssignmentGroupService.cs

@@ -1,9 +0,0 @@
-using Entities.Contracts;
-using TechHelper.Services;
-
-namespace TechHelper.Server.Services
-{
-	public interface IAssignmentGroupService : IBaseService<AssignmentStruct, Guid>
-	{
-	}
-}