Module: Alchemy::OnPageLayout

Defined in:
lib/alchemy/on_page_layout.rb

Overview

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

Instance Method Summary collapse

Instance Method Details

#on_page_layout(page_layout, callback = nil) ⇒ Object 



37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
 
# File 'lib/alchemy/on_page_layout.rb', line 37

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