NameError with a has_many_through table

NameError with a has_many_through table

class User < ActiveRecord::Base
has_many :ties, dependent: :destroy
has_many :albums, through: :ties
end
class Album < ActiveRecord::Base
has_many :ties, dependent: :destroy
has_many :users, through: :ties
end
class Tie < ActiveRecord::Base
belongs_to :user
belongs_to :album, dependent: :destroy
end
K... so, When trying to create an album, from the AlbumsController#Create
action:
def create
@album = current_user.albums.build(params[:album]) #error is on this line
if @album.save
flash[:success] = "#{@album.description} created!"
redirect_to @album
else
flash[:error] = 'Looks like something was invalid with that album. Try
again.'
redirect_to albums_path
end
end
I'm getting uninitialized constant User::Ty. I think rails is confusing
Tie with Ty. Any idea? Can I force certain names from en.yml?