entity framework core - EF7 migration in Pluralsight course

Question

Is anyone else having problems with the second migration in Shawn Wildermuth's Pluralsight course "Building a Web App with ASP.NET Core RC1, MVC 6, EF7 & AngularJS"?

Specifically, the command

dnx ef migrations add IdentityEntities

causes this exception:

GenericArguments[0], 'TheWorld.Models.IWorldRepository', on 'Microsoft.Data.Entity.Infrastructure.IDbContextFactory`1[TContext]' violates the constraint of type 'TContext'.

The first migration and database creation seemed to go fine, so I'm not sure what's causing this.

Answer 1

I just fixed this by deleting the entire Migrations folder from Solution Explorer. I am not sure exactly what causes this error, but I think if you name your migrations the same thing (IdentityEntities in your case) the problem is likely to occur.