How to include product_detail on json ?
validates :username, presence: true, format: { with: /\A[a-z0-9_.]+\z/, message: 'only allows letters' } hello howto use message: <- on views ?
hello, how to stop script after redirect_to ? if script not stop, code below will be execute
how to get last row on has many for json api ?
why nomethode i not call except ?
N+1 ? Using includes or joins better ?