66 lines
1.7 KiB
C#
66 lines
1.7 KiB
C#
using Entities.Contracts;
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using Microsoft.EntityFrameworkCore.Metadata.Builders;
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using Microsoft.EntityFrameworkCore;
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namespace TechHelper.Context.Configuration
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{
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public class AssignmentQuestionConfiguration : IEntityTypeConfiguration<ExamQuestion>
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{
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public void Configure(EntityTypeBuilder<ExamQuestion> builder)
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{
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// 1. 设置表名
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builder.ToTable("assignment_questions");
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// 2. 设置主键
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builder.HasKey(aq => aq.Id);
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// 3. 配置列名、必需性及其他属性
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// 配置 Id 列
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builder.Property(aq => aq.Id)
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.HasColumnName("id");
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// 配置 QuestionId 列 (已修正拼写)
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builder.Property(aq => aq.QuestionId)
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.HasColumnName("question_id");
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// 配置 QuestionNumber 列
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builder.Property(aq => aq.Index)
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.HasColumnName("question_number")
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.IsRequired(); // uint 类型默认非空
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// 配置 CreatedAt 列
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builder.Property(aq => aq.CreatedAt)
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.HasColumnName("created_at")
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.IsRequired(); // 通常创建时间字段是非空的
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builder.Property(aq => aq.Score)
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.HasColumnName("score");
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builder.Property(aq => aq.IsDeleted)
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.HasColumnName("deleted")
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.HasDefaultValue(false); // 适用于软删除策略
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builder.HasOne(aq => aq.Question)
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.WithMany(q => q.ExamQuestions)
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.HasForeignKey(aq => aq.QuestionId)
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.OnDelete(DeleteBehavior.Cascade);
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builder.HasOne(aq => aq.ParentExamQuestion)
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.WithMany(aq => aq.ChildrenAssignmentQuestion)
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.HasForeignKey(aq => aq.ParentExamQuestionId)
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.OnDelete(DeleteBehavior.Cascade);
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builder.HasOne(aq => aq.QuestionContext)
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.WithMany(qc => qc.Questions)
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.HasForeignKey(aq => aq.QuestionContextId)
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.OnDelete(DeleteBehavior.SetNull);
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}
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}
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}
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