如何使用 UserManager 在 IdentityUser 上加载导航属性

问题描述

我扩展了 IdentityUser 以包含用户地址的导航属性，但是当使用 UserManager.FindByEmailAsync 获取用户时，导航属性未填充.ASP.NET Identity Core 是否有某种方法来填充导航属性，例如 Entity Framework 的 Include()，还是我必须手动完成?

I've extended IdentityUser to include a navigation property for the user's address, however when getting the user with UserManager.FindByEmailAsync, the navigation property isn't populated. Does ASP.NET Identity Core have some way to populate navigation properties like Entity Framework's Include(), or do I have to do it manually?

我已经像这样设置了导航属性:

I've set up the navigation property like this:

public class MyUser : IdentityUser
{
    public int? AddressId { get; set; }

    [ForeignKey(nameof(AddressId))]
    public virtual Address Address { get; set; }
}

public class Address
{
    [Key]
    public int Id { get; set; }
    public string Street { get; set; }
    public string Town { get; set; }
    public string Country { get; set; }
}

推荐答案

不幸的是，您必须手动完成或创建您自己的 IUserStore 以在 中加载相关数据>FindByEmailAsync 方法:

Unfortunately, you have to either do it manually or create your own IUserStore<IdentityUser> where you load related data in the FindByEmailAsync method:

public class MyStore : IUserStore<IdentityUser>, // the rest of the interfaces
{
    // ... implement the dozens of methods
    public async Task<IdentityUser> FindByEmailAsync(string normalizedEmail, CancellationToken token)
    {
        return await context.Users
            .Include(x => x.Address)
            .SingleAsync(x => x.Email == normalizedEmail);
    }
}

当然，仅仅为此实现整个商店并不是最好的选择.

Of course, implementing the entire store just for this isn't the best option.

不过，您也可以直接查询商店:

You can also query the store directly, though:

UserManager<IdentityUser> userManager; // DI injected

var user = await userManager.Users
    .Include(x => x.Address)
    .SingleAsync(x => x.NormalizedEmail == email);

这篇关于如何使用 UserManager 在 IdentityUser 上加载导航属性的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！