ASP 标识表列更改，但无法使用新列名进行映射

ASP Identity table column change but mapping is not possible with new column name(ASP 标识表列更改，但无法使用新列名进行映射)

问题描述

我已更改 asp 身份，以便在 AspNetIdentity 表的数据库 Id 列中为 UserId:

I have changed the asp Identity so that in database Id column of AspNetIdentity table be UserId:

modelBuilder.Entity<ApplicationUser>()
                        .Property(p => p.Id)
                        .HasColumnName("UserId");

而且效果很好.生成的表有 UserId 而不是 Id.
现在我有另一个表，应该由 UserId 与 AspNetUsers 映射:
这样写的时候:

And that works fine. Generated table have UserId instead Id.
Now I have another table that should be mapped with AspNetUsers by UserId:
When write it this way:

public class JobApply
    {   ...
        public int UserId { get; set; }       
        public virtual ApplicationUser ApplicationUser { get; set; }

数据库中的表如下:

如果我这样写:

Table in database looks like:

And if I write it like this:

public class JobApply
    {   ...
        public int ApplicationUserId { get; set; }
        public virtual ApplicationUser ApplicationUser { get; set; }

数据库如下:



第一个选项创建了 UserId 字段，但它不是 FK 而不是将新字段添加为 FK.
我怎样才能正确地将其映射到具有字段 UserId 的表 JobApply 为 FK 到 AspNetUsers?

更新

当我添加这个时:

database looks like:



First option created UserId field but it is not FK instead of that new field is added as FK.
How can I properly map this to have table JobApply with field UserId to be FK to AspNetUsers?

UPDATE

When I add this:

base.OnModelCreating(modelBuilder);

            modelBuilder.Entity<ApplicationUser>()
                        .Property(p => p.Id)
                        .HasColumnName("UserId");

            modelBuilder.Entity<JobApply>()
                    .HasRequired(e => e.ApplicationUser)
                    .WithMany()
                    .HasForeignKey(e => e.UserId);

表关系如下:

这是两个类:

Tables relation looks like this:

This is both classes:

public class ApplicationUser : IdentityUser<int, ApplicationUserLogin, ApplicationUserRole, ApplicationUserClaim>
    {
        public string Email { get; set; }
        public string ConfirmationToken { get; set; }
        public bool IsConfirmed { get; set; }
        public string PasswordResetToken { get; set; }

        public int CityId { get; set; }
        public virtual City City { get; set; }


        public virtual ICollection<JobApply> JobApplies { get; set; }
    }

public class JobApply
    {
        public int JobApplyId { get; set; }
        public int UserId { get; set; }
        public int JobId { get; set; }
        public int JobApplyStatusId { get; set; }
        public DateTime CreatedDate { get; set; }

        public virtual ApplicationUser ApplicationUser { get; set; }
        public virtual Job Job { get; set; }
        public virtual JobApplyStatus JobApplyStatus { get; set; }

    }

推荐答案

像这样定义你与 fluent API 的关系:

Define your relationship with the fluent API like this:

modelBuilder.Entity<JobApply>()
                    .HasRequired(e => e.ApplicationUser)
                    .WithMany(e => e.JobApplies)
                    .HasForeignKey(e => e.UserId);

您也可以从 ApplicationUser 类中删除属性 UserId，然后像这样定义映射:

You may as well remove the property UserId from the ApplicationUser class and then define the mapping like this:

modelBuilder.Entity<JobApply>()
                    .HasRequired(e => e.ApplicationUser)
                    .WithMany(e => e.JobApplies)
                    .Map(m => m.MapKey("UserId"));

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