resourseable_concern.rb

resourseable_concern.rb

module Resourceable
  extend ActiveSupport::Concern

  included do
    helper_method :resource, :resources, :resource_class
  end

  def index; end

  def show; end

  def edit
    render 'new'
  end

  def new
    @resource = build_resource
  end

  def create
    @resource = build_resource(resource_params)

    respond_to do |format|
      if resource.save
        format.html { redirect_to action: :index, notice: t('.created') }
      else
        format.html { render :new }
      end
    end
  end

  def update
    respond_to do |format|
      if resource.update(resource_params)
        format.html { redirect_to action: :show, notice: t('.updated') }
      else
        format.html { render :new }
      end
    end
  end

  def destroy
    resource.destroy
    respond_to do |format|
      format.html { redirect_to action: 'index', notice: t('.deleted') }
    end
  end

  private

  def resource
    @resource ||= resource_class.find(params[:id])
  end

  def resources
    @resources ||= resource_class.all
  end

  def resource_class
    raise 'Should be implemented localy'
  end

  def resource_params
    raise 'Should be implemented localy'
  end
end

# Использование:
class ArticlesController < ApplicaitonController
  include Resourceable

  private

  def resource_class
    Article
  end

  def resource_params
    params.require(:article).permit(
      :title, :text, :theme_id
    )
  end
end