Confusing error when running migrations with issues

[jwoertink]

If you have the following

def migrate
  create table_for(Comment) do
    primary_key id : UUID
    add_timestamps
    add_belongs_to user : User, on_delete: :cascade
  end
end

Then you run lucky db.migrate, you may run in to an error that mentions something like:

foreign key constraint "comment_user_id_fkey" cannot be implemented (Exception)

This is because the user id might be UUID, but you forgot to add the foreign_key_type: UUID to your add_belongs_to.

If we have a way to catch this error, we should.