DbContext without defining DbSets are not Supported

Description

this is my DbSet:

public class AppDbContext : DbContext
{
    public AppDbContext(DbContextOptions<AppDbContext> options)
        : base(options)
    { }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        Type[] types = typeof(AppDbContext).GetTypeInfo().Assembly.GetTypes();
        IEnumerable<Type> typesToRegister = types
            .Where(type => type.GetInterfaces()
                .Where(i => i.IsGenericType)
                .Any(i => i.GetGenericTypeDefinition() == typeof(IEntityTypeConfiguration<>)));

        foreach (var type in typesToRegister)
        {
            dynamic configurationInstance = Activator.CreateInstance(type);
            addConfiguration(modelBuilder, configurationInstance);
        }

        base.OnModelCreating(modelBuilder);
    }

    private static void addConfiguration<TEntity>(ModelBuilder modelBuilder, IEntityTypeConfiguration<TEntity> configuration)
        where TEntity : class
    {
        configuration.Configure(modelBuilder.Entity<TEntity>());
    }
}

and I configure each model using

#region configurations
public class Configuration : IEntityTypeConfiguration<Person>
{
    public void Configure(EntityTypeBuilder<Person> builder)
    {
        builder.ToTable(nameof(Person).Pluralize());
        builder.HasKey(x => x.Code);

        builder.Ignore(x => x.Id).Ignore(x => x.StringId);
    }
}
#endregion

inside my model.

but when I try to load PersonController, 'm getting this error:

A resource has not been properly defined for type ‘Person’. Ensure it has been registered on the ResourceGraph.

Environment

• JsonApiDotNetCore Version: 3.1.0
• Other Relevant Package Versions:

[wisepotato]

To be honest? Wait a week or 2, or explicitely state your models for now (if thats possible for you). We are working on decoupling the JsonApiContext (where you’re getting your error) and making it more testable and (hint hint) more extendable for different uses.

You’re getting the error here:

https://github.com/json-api-dotnet/JsonApiDotNetCore/blob/8cca15a5ba42f8543ae937a2dcc867ee6cd303ff/src/JsonApiDotNetCore/Services/JsonApiContext.cs#L75-L77

But in our version, that we’re working on for V4, the _controllerContext is non-existent. So what I suggest is: either help and see if you can make a basic testable example project (which helps us immensely) and do that in the branch .

New version is here:

https://github.com/json-api-dotnet/JsonApiDotNetCore/blob/feat/context-decoupling/src/JsonApiDotNetCore/Services/JsonApiContext.cs#L80

, as you see the function that throws your errors has been made obsolete. (and for good reason!)

[maurei]

#581 introduces the usage of an intermediate service provider in the IServiceCollectionExtensions we needed in this issue.