c# - ASP .NET Core Identity custom ApiAuthorizationDbContext

Question

I'm working with ASP .NET Core 3.0 with Angular project. I see this new ApiAuthorizationDbContext and I wanted to override the table name and user id (to int) but there is no way I can do it. Does any body know a trick?

This is the class for the context to override the table name but it creates AspNetUser and User table. Why doesn't it just create one as usual?

public class ApplicationDbContext : ApiAuthorizationDbContext<AppUser>
    {
        public ApplicationDbContext(
            DbContextOptions options,
            IOptions<OperationalStoreOptions> operationalStoreOptions) : base(options, operationalStoreOptions)
        {
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);

            modelBuilder.Entity<AppUser>(entity => { entity.ToTable(name: "User"); });
            modelBuilder.Entity<AppRole>(entity => { entity.ToTable(name: "Role"); });
        }
    }

Here is my user:

public class AppUser : IdentityUser
{
}

Normaly I override the primary key with AppUser<int> but it doesn't work because of the ApiAuthorizationDbContext.

Any ideas?

Answer 1

For custom the user and role tables with ApiAuthorizationDbContext, you could follow steps below:

1. Create an Asp.Net Core Angular Template with Identity

2. Add User and Role Class

   public class AppUser : IdentityUser<int>
   {
   }
   public class AppRole : IdentityRole<int>
   {
   }
   

3. Add custom ApiAuthorizationDbContext

   /// <summary>
   /// Database abstraction for a combined <see cref="DbContext"/> using ASP.NET Identity and Identity Server.
   /// </summary>
   /// <typeparam name="TUser"></typeparam>
   /// <typeparam name="TRole"></typeparam>
   /// <typeparam name="TKey">Key of the IdentityUser entity</typeparam>
   public class KeyApiAuthorizationDbContext<TUser, TRole, TKey> : IdentityDbContext<TUser, TRole, TKey>, IPersistedGrantDbContext
       where TUser : IdentityUser<TKey>
       where TRole : IdentityRole<TKey>
       where TKey : IEquatable<TKey>
   {
       private readonly IOptions<OperationalStoreOptions> _operationalStoreOptions;
   
       /// <summary>
       /// Initializes a new instance of <see cref="ApiAuthorizationDbContext{TUser, TRole, TKey}"/>.
       /// </summary>
       /// <param name="options">The <see cref="DbContextOptions"/>.</param>
       /// <param name="operationalStoreOptions">The <see cref="IOptions{OperationalStoreOptions}"/>.</param>
       public KeyApiAuthorizationDbContext(
           DbContextOptions options,
           IOptions<OperationalStoreOptions> operationalStoreOptions)
           : base(options)
       {
           _operationalStoreOptions = operationalStoreOptions;
       }
   
       /// <summary>
       /// Gets or sets the <see cref="DbSet{PersistedGrant}"/>.
       /// </summary>
       public DbSet<PersistedGrant> PersistedGrants { get; set; }
   
       /// <summary>
       /// Gets or sets the <see cref="DbSet{DeviceFlowCodes}"/>.
       /// </summary>
       public DbSet<DeviceFlowCodes> DeviceFlowCodes { get; set; }
   
       Task<int> IPersistedGrantDbContext.SaveChangesAsync() => base.SaveChangesAsync();
   
       /// <inheritdoc />
       protected override void OnModelCreating(ModelBuilder builder)
       {
           base.OnModelCreating(builder);
           builder.ConfigurePersistedGrantContext(_operationalStoreOptions.Value);
       }
   }
   
   /// <summary>
   /// Database abstraction for a combined <see cref="DbContext"/> using ASP.NET Identity and Identity Server.
   /// </summary>
   /// <typeparam name="TUser"></typeparam>
   public class ApiAuthorizationDbContext<TUser> : KeyApiAuthorizationDbContext<TUser, IdentityRole, string>
       where TUser : IdentityUser
   {
       /// <summary>
       /// Initializes a new instance of <see cref="ApiAuthorizationDbContext{TUser}"/>.
       /// </summary>
       /// <param name="options">The <see cref="DbContextOptions"/>.</param>
       /// <param name="operationalStoreOptions">The <see cref="IOptions{OperationalStoreOptions}"/>.</param>
       public ApiAuthorizationDbContext(
           DbContextOptions options,
           IOptions<OperationalStoreOptions> operationalStoreOptions)
           : base(options, operationalStoreOptions)
       {
       }
   }
   

4. Change DbContext

   public class ApplicationDbContext : KeyApiAuthorizationDbContext<AppUser, AppRole, int>
   {
       public ApplicationDbContext(
           DbContextOptions options,
           IOptions<OperationalStoreOptions> operationalStoreOptions) : base(options, operationalStoreOptions)
       {
       }
       protected override void OnModelCreating(ModelBuilder modelBuilder)
       {
           base.OnModelCreating(modelBuilder);
   
           modelBuilder.Entity<AppUser>(entity => { entity.ToTable(name: "User"); });
           modelBuilder.Entity<AppRole>(entity => { entity.ToTable(name: "Role"); });
       }
   }
   

5. Register user and role

   services.AddDefaultIdentity<AppUser>()
       .AddRoles<AppRole>()
       .AddEntityFrameworkStores<ApplicationDbContext>();
   
   services.AddIdentityServer()                
       .AddApiAuthorization<AppUser, ApplicationDbContext>();
   

6. Delete existing Migrations(if database exist, you may need to delete it).

7. Run add-migration and update-database to check the result.

Currently, you need to custom ApiAuthorizationDbContext, this issue has been tracked through ApiAuthorizationDbContext force TUser to extends IdentityUser instead of IdentityUser #9548 and Add IdentityUser support to ApiAuthorizationDbContext #13064. It will be some delay to get the neweast version.