Add migration with different assembly

Question

I am working on a project with ASP.NET CORE 1.0.0 and I am using EntityFrameworkCore. I have separate assemblies and my project structure looks like this:

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Answer 1

Currently I think EF only supports to add migrations on projects not yet on class libraries.

And just side note for anybody else who wants to add migrations to specific folder inside your project:

EF CLI not support this yet. I tried --data-dir but it didn't work.

The only thing works is to use Package Manager Console:

1. Pick your default project
2. use -OutputDir command parameter, .e.g., Add-Migration InitConfigurationStore -OutputDir PersistedStores/ConfigurationStore command will output the mgiration to the folder 'PersistedStores/ConfigurationStore' in my project.

Updates as of 10/12/2017

public void ConfigureServices(IServiceCollection services)
{
    ...

    string dbConnectionString = services.GetConnectionString("YOUR_PROJECT_CONNECTION");
    string assemblyName = typeof(ProjectDbContext).Namespace;

    services.AddDbContext<ProjectDbContext>(options =>
        options.UseSqlServer(dbConnectionString,
            optionsBuilder =>
                optionsBuilder.MigrationsAssembly(assemblyName)
        )
   );

   ...
}

Answer 2

I had the same problem until I noticed that on the package manager console top bar => "Default Projects" was supposed to be "Project.Data" and not "Project.API".

Once you target the "Project.Data" from the dropdown list and run the migration you should be fine.