How to add more fields to ASP.NET Core Identity? - asp.net-core

Question

I am using .NET 5 - version 5.0.100-rc.1.20452.10 .
I customized table AspNetUsers success, by this way
using Microsoft.AspNetCore.Identity;
using System;
namespace shadow.Models
{
public class ApplicationUser : IdentityUser
{
public string Fullname { get; set; }
public string AliasName { get; set; }
public string SecondMobile { get; set; }
public string About { get; set; }
public string Avatar { get; set; }
public DateTime? Created { get; set; }
public DateTime? Modified { get; set; }
}
}
and
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using shadow.Models;
namespace shadow.Data
{
public partial class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
public ApplicationDbContext()
{
}
public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options)
{
}
public virtual DbSet<ApplicationUser> ApplicationUsers { get; set; }
I am looking for a similar solution with table AspNetRoles. I need add filed Description to table AspNetRoles, how to archive this? Please guide me how to make change in ApplicationDbContext.
My effort: I tried
using Microsoft.AspNetCore.Identity;
namespace shadow.Models
{
public class ApplicationRole : IdentityRole
{
public string Description { get; set; }
}
}
but error
I feel hard when decare ApplciationRole to ApplicationDbContext

Answer 1

As we can see in the sourcecode Microsoft.AspNetCore.Identity.EntityFrameworkCore does not have a class for IdentityDbContext<TUser, TRole>. It has classes IdentityDbContext<TUser> and IdentityDbContext<TUser, TRole, TKey>. Hence, as described in point 5 of documentation
If a custom ApplicationRole class is being used, update the class to inherit from IdentityRole. For example:
using System;
using Microsoft.AspNetCore.Identity;
public class ApplicationRole : IdentityRole<Guid>
{
public string Description { get; set; }
}
Update ApplicationDbContext to reference the custom ApplicationRole class. For example, the following class references a custom ApplicationUser and a custom ApplicationRole:
using System;
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
public class ApplicationDbContext :
IdentityDbContext<ApplicationUser, ApplicationRole, Guid>
{
public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
: base(options)
{
}
}
Where the last parameter Guid above is the type of the primary key for users and roles, as described here