Contents

module Alchemy

  # = Adds before filter to pages show action
  #
  # Use this mixin to add the +on_page_layout+ class method
  # into your +ApplicationController+.
  #
  # Pass a block or method name in which you have the +@page+ object and can do
  # everything as if you where in a normal controller action.
  #
  # Pass a +Alchemy::PageLayout+ name or +:all+ to
  # call this callback only on specific pages or all pages.
  #
  # == Example:
  #
  #     class ApplicationController < ActionController::Base
  #       extend Alchemy::OnPageLayout
  #
  #       on_page_layout :all do
  #         @my_stuff = Stuff.all
  #       end
  #
  #       on_page_layout :contact, :do_something
  #
  #       private
  #
  #       def do_something
  #         @contacts = Contact.all
  #         if @page.tag_list.include?('something')
  #           do_something
  #         end
  #       end
  #     end
  #
  module OnPageLayout

    def on_page_layout(page_layout, callback = nil)
      Alchemy::PagesController.class_eval do

        append_before_action only: :show, if: -> { call_page_layout_callback_for?(page_layout) } do
          if block_given?
            instance_eval(&Proc.new)
          elsif callback
            self.send(callback)
          else
            raise "You need to either pass a block or method name as callback for `on_page_layout`"
          end
        end

        private

        def call_page_layout_callback_for?(page_layout)
          page_layout.to_sym == :all || @page.page_layout.to_sym == page_layout.to_sym
        end
      end
    end
  end
end

Version data entries

5 entries across 5 versions & 2 rubygems

Version	Path
alchemy_cms-3.2.1	lib/alchemy/on_page_layout.rb
lc_alchemy_cms-3.2.1	lib/alchemy/on_page_layout.rb
lc_alchemy_cms-3.2.0	lib/alchemy/on_page_layout.rb
alchemy_cms-3.2.0	lib/alchemy/on_page_layout.rb
alchemy_cms-3.2.0.rc1	lib/alchemy/on_page_layout.rb