DB-First authentication confusion with ASP.NET Web API 2 + EF6

Question

I need to create a Web API C# application for an existing MySQL database. I\'ve managed to use Entity Framework 6 to bind every database table to a RESTful API (that all

Answer 1

Since your DB schema are not compatible with default UserStore You must implement your own UserStore and UserPasswordStore classes then inject them to UserManager. Consider this simple example:

First write your custom user class and implement IUser interface:

class User:IUser
{
    public int ID {get;set;}
    public string Username{get;set;}
    public string Password_hash {get;set;}
    // some other properties 
}

Now author your custom UserStore and IUserPasswordStore class like this:

public class MyUserStore : IUserStore, IUserPasswordStore
{
    private readonly MyDbContext _context;

    public MyUserStore(MyDbContext context)
    {
        _context=context;
    }

    public Task CreateAsync(AppUser user)
    {
        // implement your desired logic such as
        // _context.Users.Add(user);
    }

    public Task DeleteAsync(AppUser user)
    {
        // implement your desired logic
    }

    public Task FindByIdAsync(string userId)
    {
        // implement your desired logic
    }

    public Task FindByNameAsync(string userName)
    {
        // implement your desired logic
    }

    public Task UpdateAsync(AppUser user)
    {
        // implement your desired logic
    }

    public void Dispose()
    {
        // implement your desired logic
    }

    // Following 3 methods are needed for IUserPasswordStore
    public Task GetPasswordHashAsync(AppUser user)
    {
        // something like this:
        return Task.FromResult(user.Password_hash);
    }

    public Task HasPasswordAsync(AppUser user)
    {
        return Task.FromResult(user.Password_hash != null);
    }

    public Task SetPasswordHashAsync(AppUser user, string passwordHash)
    {
        user.Password_hash = passwordHash;
        return Task.FromResult(0);
    }
}

Now you have very own user store simply inject it to the user manager:

public class ApplicationUserManager: UserManager
{
    public static ApplicationUserManager Create(IdentityFactoryOptions options, IOwinContext context)
    {
         var manager = new ApplicationUserManager(new MyUserStore(context.Get()));
         // rest of code
    }
}

Also please note you must directly inherit your DB Context class from DbContext not IdentityDbContext since you have implemented own user store.