如何在ASP.NET MVC 5实体框架6中使用流畅的API映射表？

我试图创建一个一对一的关系使用C＃在实体框架6使用ASP.NET MVC 5内置用户身份验证。如何在ASP.NET MVC 5实体框架6中使用流畅的API映射表？

我能够使用实体框架创建的默认值创建表和连接。但是，当我尝试使用流利的API ......更具体地说，当我使用模型创建甚至是空的时候，使用包管理器控制台的数据库迁移将失败。我如何映射我的一对一关系？

我的错误：

//error 
//my.Models.IdentityUserLogin: : EntityType 'IdentityUserLogin' has no key defined. //Define the key for this EntityType. 
//my.Models.IdentityUserRole: : EntityType 'IdentityUserRole' has no key defined. //Define the key for this EntityType. 
//IdentityUserLogins: EntityType: EntitySet 'IdentityUserLogins' is based on type //'IdentityUserLogin' that has no keys defined. 
//IdentityUserRoles: EntityType: EntitySet 'IdentityUserRoles' is based on type //'IdentityUserRole' that has no keys defined.

我的代码：

namespace my.Models 
{ 

    public class ApplicationUser : IdentityUser 
    { 
    } 

    public class ApplicationDbContext : IdentityDbContext<ApplicationUser> 
    { 
     public ApplicationDbContext() 
      : base("DefaultConnection") 
     { 
     } 

     public DbSet<EngineeringProject> EngineeringProjects { get; set; } 

     public DbSet<EngineeringProject> EngineeringDesigns { get; set; } 

     protected override void OnModelCreating(DbModelBuilder modelBuilder) 
     { 
      modelBuilder.Configurations.Add(new EngineeringDesignMap()); 
      modelBuilder.Configurations.Add(new EngineeringProjectMap()); 
     } 

    } 
} 

namespace my.Models.Mapping 
{ 
    public class EngineeringProjectMap : EntityTypeConfiguration<EngineeringProject> 
    { 
     public EngineeringProjectMap() 
     { 
      this.HasRequired(t => t.EngineeringPd) 
       .WithOptional(t => t.EngineeringProject); 
      this.HasRequired(t => t.EngineeringProjectCategory) 
       .WithMany(t => t.EngineeringProjects) 
       .HasForeignKey(d => d.CategoryId); 
     } 
    } 
}

来源

2013-10-18 Bob

_has没有定义关键字_什么不明白你？ “IdentityUser”的外观是什么？ –

发生错误的原因是派生标识表在派生上下文中具有映射。这需要在新的OnModelCreating覆盖函数中调用。要做到这一点，只需将base.OnModelCreating（modelBuilder）添加到您的方法中，如下所示。

protected override void OnModelCreating(DbModelBuilder modelBuilder) 
{ 
    base.OnModelCreating(modelBuilder); // <-- This is the important part! 
    modelBuilder.Configurations.Add(new EngineeringDesignMap()); 
    modelBuilder.Configurations.Add(new EngineeringProjectMap()); 
}

来源

2013-10-21 02:24:41

这让我明白了解决方案。谢谢！ –

它看起来像你缺少你的DbContext到base.OnModelCreating通话。

来源

2013-10-19 00:27:01

如何在ASP.NET MVC 5实体框架6中使用流畅的API映射表？

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