Question

我似乎与身份有仇恨/爱情关系。我喜欢它，因为它是大多数应用程序的完整解决方案。但我讨厌它，因为延伸并不是一件容易的事。我觉得它比它应该更加复杂。

我正在尝试向我的用户模型添加自定义属性和外键，但这似乎是一项非常困难的任务。

我需要添加一个名为Identity的新UserId字段，因为Id是一个字符串，将由数据库自动生成。然后，我需要将一个外键添加到Company模型，将另一个外键添加到Location模型。

我按照answer from this other question中的说明尝试添加两个新的外键，并能够从我的控制器中获取它们的值。

这是我到目前为止所做的。我做出修改后的ApplicationUser课程看起来像这样

public class ApplicationUser : IdentityUser
{
    [Key]
    public int MyUserId { get; set; }

    [ForeignKey("Company")]
    public int CompanyId { get; set; }

    [ForeignKey("Location")]
    public int CurrentLocationId { get; set; }

    public virtual Company Company { get; set; }

    public virtual Location Location { get; set; }

    public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<ApplicationUser> manager)
    {
        // Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
        var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
        // Add custom user claims here

        userIdentity.AddClaim(new Claim("MyUserId", this.MyUserId.ToString() ));

        userIdentity.AddClaim(new Claim("CompanyId", this.CompanyId.ToString() ));

        userIdentity.AddClaim(new Claim("CurrentLocationId", this.CurrentLocationId.ToString()));

        return userIdentity;
    }
}

我还创建了一个扩展类，允许我从控制器中获取值，如此

public static class IdentityExtensions
{
    public static int GetComapnyId(this IIdentity identity)
    {
        var claim = ((ClaimsIdentity)identity).FindFirst("ComapnyId");
        // Test for null to avoid issues during local testing
        return (claim != null) ? Int32.Parse(claim.Value) : 0;
    }

    public static int GetCurrentLocationId(this IIdentity identity)
    {
        var claim = ((ClaimsIdentity)identity).FindFirst("CurrentLocationId");
        // Test for null to avoid issues during local testing
        return (claim != null) ? Int32.Parse(claim.Value) : 0;
    }


    public static int GetMyUserId(this IIdentity identity)
    {
        var claim = ((ClaimsIdentity)identity).FindFirst("MyUserId");
        // Test for null to avoid issues during local testing
        return (claim != null) ? Int32.Parse(claim.Value) : 0;
    }

}

但是我遇到了下面列出的错误＆＃34;＆＃34;当我尝试添加新的迁移

时

这是错误

在模型生成期间检测到一个或多个验证错误：

ApplicationUser_Claims_Source_ApplicationUser_Claims_Target :: 参照的从属角色中的所有属性的类型约束必须与相应的属性类型相同主要角色。财产的类型＆＃39; MyUserId＆＃39;在实体上＆＃39; IdentityUserClaim＆＃39;不符合财产的类型＆＃39; MyUserId＆＃39;上实体＆＃39; ApplicationUser＆＃39;在引用约束中＆＃39; ApplicationUser_Claims＆＃39 ;. ApplicationUser_Logins_Source_ApplicationUser_Logins_Target :: 参照的从属角色中的所有属性的类型约束必须与相应的属性类型相同主要角色。财产的类型＆＃39; MyUserId＆＃39;在实体上＆＃39; IdentityUserLogin＆＃39;不符合财产的类型＆＃39; MyUserId＆＃39;上实体＆＃39; ApplicationUser＆＃39;在引用约束中＆＃39; ApplicationUser_Logins＆＃39 ;. ApplicationUser_Roles_Source_ApplicationUser_Roles_Target ::类型参照约束的从属角色中的所有属性必须与Principal中的相应属性类型相同角色。财产的类型＆＃39; MyUserId＆＃39;实体＆＃39; IdentityUserRole＆＃39;不不符合财产的类型＆＃39; MyUserId＆＃39;在实体＆＃39; ApplicationUser＆＃39;在引用约束＆＃39; ApplicationUser_Roles＆＃39;。

这是我用来创建InitialCreate迁移

的命令

Add-Migration InitialCreate

如何添加外键并能够正确地从控制器获取外键？

Answer 1

Identity可以将主键（Id字段）更改为int。这是很多样板/空类，但它适用于我们。也许这会有所帮助？

public class ApplicationUser : IdentityUser<int, ApplicationUserLogin, ApplicationUserRole, ApplicationUserClaim>
{
    [ForeignKey("Company")]
    public int CompanyId { get; set; }

    [ForeignKey("Location")]
    public int CurrentLocationId { get; set; }

    public virtual Company Company { get; set; }

    public virtual Location Location { get; set; }

    public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<ApplicationUser> manager)
    {
        // Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
        var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
        // Add custom user claims here

        userIdentity.AddClaim(new Claim("CompanyId", this.CompanyId.ToString() ));

        userIdentity.AddClaim(new Claim("CurrentLocationId", this.CurrentLocationId.ToString()));

        return userIdentity;
    }
}

public class ApplicationUserLogin : IdentityUserLogin<int>
{
}

public class ApplicationUserRole : IdentityUserRole<int>
{
    [ForeignKey("RoleId")]
    public virtual ApplicationRole Role { get; set; }

    [ForeignKey("UserId")]
    public virtual ApplicationUser User { get; set; }
}

public class ApplicationRole : IdentityRole<int, UserRole>
{

}

public class ApplicationUserClaim : IdentityUserClaim<int>
{
}

然后我们还需要自定义ApplicationUserStore

public class ApplicationUserStore : UserStore<ApplicationUser, ApplicationRole, int, ApplicationUserLogin, ApplicationUserRole, ApplicationUserClaim>
{
    public ApplicationUserStore(DbContext context)
        : base(context)
    {
    }
}

如何在ASP.NET MVC中使用自定义属性扩展Identity？

1 个答案: