ApplicationUser 始终为空 ASP.NET CORE 3.0 标识

Question

When I try to get my users från the table AspNetUsers the users always return null even though there is a user in the table.

public class ApplicationUser : IdentityUser
{
    public int Rating { get; set; }
    public string ProfileImageUrl { get; set; }
    public DateTime MemberSince { get; set; }
    public bool IsActive { get; set; }
}

What I want to show is Posts with Author information

public class Post
{
    public int Id { get; set; }
    public string Title { get; set; }
    public string Content { get; set; }
    public DateTime Created { get; set; }

    public virtual Foorum Forum { get; set; }
    public virtual IEnumerable<PostReply> PostReplies { get; set; }
    public virtual ApplicationUser User { get; set; }
}

And this is how I'm getting Posts and Users and User is always null here.

 public Foorum GetById(int id)
    {
        var forum = _forumDbContext.Forums.Where(f => f.Id == id)
            .Include(f => f.Posts)
            .ThenInclude(p => p.User)
            .Include(f => f.Posts)
            .ThenInclude(p => p.PostReplies)
            .ThenInclude(r => r.User)
            .FirstOrDefault();

        return forum;
    }

This is how my DbContext looks like:

    public class ForumDbContext : IdentityDbContext<IdentityUser>
{
    public ForumDbContext(DbContextOptions<ForumDbContext> options)
        : base(options)
    {
    }

    public DbSet<Foorum> Forums { get; set; }
    public DbSet<Post> Posts { get; set; }
    public DbSet<PostReply> PostReplies { get; set; }
}

Startup.cs

        public void ConfigureServices(IServiceCollection services)
    {
        services.AddDbContext<ForumDbContext>(options =>
            options.UseSqlServer(
                Configuration.GetConnectionString("DefaultConnection")));

        services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true)
            .AddEntityFrameworkStores<ForumDbContext>();
}

And I've also added app.UseAuthentication(); app.UseAuthorization(); in the Configure method.

What am I missing here, why can't I get users from the database?

Answer 1

UPDATE

Change IdentityUser to ApplicationUser in Startup.cs & ForumDbContext.cs files, it may help.

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As I mentioned in this post , you should add a property UserId and just set it to the desired User Id such as _currentUser.Id . The entity framework will include User into your model automatically.