blg.1-4

gistfile1.rb

class PicturesController < ApplicationController
  def index
    @pictures = Picture.order(:priority)
  end
 
  def new
    @picture = Picture.new
  end
 
  def create
    @picture = Picture.new(picture_params)
    if @picture.save
      redirect_to root_path
    else
      render :new
    end
  end
 
  def sort
    JSON.parse(params[:data]).each do |el|
      Picture.find(el["id"]).update_attributes(priority: el["priority"])
    end
    render nothing: true
  end
 
  private
 
  def picture_params
    params.require(:picture).permit(:file, :title)
  end
end