app/controllers/order_comments_controller.rb
class OrderCommentsController < ApplicationController
def new
@order = Order.find(params[:order_id])
@order_comment = @order.comments.build(user: current_user)
end
def create
@order_comment = OrderComment.new(params[:order_comment])
if @order_comment.save
render layout: false
else
render action: :new, layout: false
end
end
end