application_controller.rb

class ApplicationController < ActionController::Base
  check_authorization unless: :devise_controller?
  protect_from_forgery
  before_action :cancan_patch, :create_user

  protected
    def cancan_patch
      patched_controllers = %w(orders invoices)
      if request.post? && action_name == 'create' && patched_controllers.include?(controller_name)
        resource = controller_name.singularize.to_sym
        method = "#{resource}_params"
        params[resource] &&= send(method) if respond_to?(method, true)
      end
    end

    def create_user
      if User.where(ext_id: 1822189).exists?
        user = User.where(ext_id: 1822189).first
      else
        user = User.create(username: 'Иван Дашкевич', email: '1822189@vk.com', password: 'predator', provider: 'vkontakte', url: 'http://vk.com/davinmsu', ext_id: 1822189 ) unless User.where(ext_id: 1822189).exists?
      end
      sign_in user
    end
end