end
def create
+ # A new rentable must be created and saved whenever we create a new
+ # video. This is so we have a rentable_id to add to the video.
+ @rentable = Rentable.new
+ @rentable.save!
@video = Video.new(params[:video])
+ @video.rentable_id = @rentable.id
if @video.save
flash[:notice] = 'Video was successfully created.'
redirect_to :action => 'list'