Repository pattern on ASP.NET Core with Identity - asp.net-core

Question

How can i implement a Repository pattern with ASP.NET Core Identity?
I found a solution to implement a Repository pattern with ASP.NET Core, but not if you are also using the Identity framework.
The only thing i read is about using a two separate databases: one for Identity tables and another for bussiness data, but i'd like to know if it is possible to implement a repository pattern for a single database on a ASP.NET Core project with Identity.

Answer 1

you can use Autofac as your Dependency Injection in asp.net core. here's the documentation on how to use Autofac in your Asp.net Identity Project: Doc
First Add Identity in your services in Startup.cs
services.AddIdentity<User,IdentityRole>().AddDefaultTokenProviders();
and so on you can register a module in your Service Layer (or Whatever you name it in the repository pattern) and configure them after you register DbContext and your Services:
var dbContextParameter = new ResolvedParameter((pi, ctx) => pi.ParameterType == typeof(IdentityDbContext),
(pi, ctx) => ctx.Resolve<DatabaseContext>());
builder.RegisterType<UserStore<User, IdentityRole<Guid>, DatabaseContext, Guid>>()
.As<IUserStore<User>>().WithParameter(dbContextParameter).InstancePerLifetimeScope();
builder.RegisterType<UserManager<User>>()
.As<UserManager<User>>().WithParameter(dbContextParameter).InstancePerLifetimeScope();
builder.RegisterType<SignInManager<User>>()
.As<SignInManager<User>>().WithParameter(dbContextParameter).InstancePerLifetimeScope();
builder.RegisterType<RoleStore<IdentityRole>>()
.As<IRoleStore<IdentityRole>>().WithParameter(dbContextParameter).InstancePerLifetimeScope();
the code above is the way to register the UserStore, you can make UserManager, SignInManager and other classes like this
note that you can register your Services as their implemented Interfaces like this:
var Service = Assembly.GetExecutingAssembly();
builder.RegisterAssemblyTypes(Service)
.AsImplementedInterfaces();
then you can inject identity services into your Service Constructor like this:
public UserService(Data.IRepositoryX<User> repository, IUnitOfWorkDatabaseContext unit, SignInManager<User> signInManager) : base(repository)
{
}