63 lines
1.4 KiB
C#
63 lines
1.4 KiB
C#
using Microsoft.EntityFrameworkCore;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations.Schema;
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using System.ComponentModel.DataAnnotations;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Entities.Contracts
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{
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[Table("assignment_questions")]
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public class AssignmentQuestion
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{
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[Key]
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[Column("id")]
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public Guid Id { get; set; }
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[Column("question_id")]
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public Guid? QuestionId { get; set; } // 设为可空
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// 当 IsGroup 为 true 时，此为 QuestionGroup 的外键
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[Column("question_group_id")] // 新增一个外键列
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public Guid? QuestionGroupId { get; set; } // 设为可空
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[Required]
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[Column("group_id")]
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[ForeignKey("AssignmentGroup")]
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public Guid AssignmentGroupId { get; set; }
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[Required]
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[Column("question_number")]
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public byte QuestionNumber { get; set; }
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[Column("created_at")]
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public DateTime CreatedAt { get; set; }
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[Column("score")]
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public float? Score { get; set; }
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[Required]
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[Column("bgroup")]
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public bool IsGroup { get; set; }
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[Column("deleted")]
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public bool IsDeleted { get; set; }
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public Question Question { get; set; }
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public QuestionGroup QuestionGroup { get; set; }
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public ICollection<SubmissionDetail> SubmissionDetails { get; set; }
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public AssignmentGroup AssignmentGroup { get; set; }
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public AssignmentQuestion()
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{
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Id = Guid.NewGuid();
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SubmissionDetails = new HashSet<SubmissionDetail>();
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}
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}
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}
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