57 lines
1.5 KiB
C#
57 lines
1.5 KiB
C#
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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using Microsoft.EntityFrameworkCore;
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namespace Entities.Contracts
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{
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/// <summary>
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/// 班级用户关联实体类
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/// 表示用户与班级之间的多对多关系
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/// </summary>
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[Table("class_user")]
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[PrimaryKey(nameof(ClassId), nameof(UserId))]
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public class ClassUser
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{
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/// <summary>
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/// 班级ID，复合主键的一部分，外键
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/// 关联到Class表中的班级
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/// </summary>
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[Key]
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[Column("class_id", Order = 0)]
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public Guid ClassId { get; set; }
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[ForeignKey(nameof(ClassId))]
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public virtual Class Class { get; set; }
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/// <summary>
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/// 用户ID，复合主键的一部分，外键
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/// 关联到User表中的用户用户
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/// </summary>
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[Key]
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[Column("student_id", Order = 1)]
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public Guid UserId { get; set; }
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[ForeignKey(nameof(UserId))]
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public virtual User User { get; set; }
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/// <summary>
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/// 入学日期
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/// 记录用户加入该班级的日期
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/// </summary>
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[Column("enrollment_date")]
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public DateTime EnrollmentDate { get; set; }
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/// <summary>
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/// 是否已删除
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/// 软删除标记，true表示已删除
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/// </summary>
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[Column("deleted")]
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public bool IsDeleted { get; set; }
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}
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}
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