Contents

module MetaTags
  # Contains methods to use in controllers.
  #
  # You can define several instance variables to set meta tags:
  #   @page_title = 'Member Login'
  #   @page_description = 'Member login page.'
  #   @page_keywords = 'Site, Login, Members'
  #
  # Also you can use {InstanceMethods#set_meta_tags} method, that have the same parameters
  # as {ViewHelper#set_meta_tags}.
  #
  module ControllerHelper
    def self.included(base)
      base.send :include, InstanceMethods
      base.alias_method_chain :render, :meta_tags
    end

    module InstanceMethods
      # Processes the <tt>@page_title</tt>, <tt>@page_keywords</tt>, and
      # <tt>@page_description</tt> instance variables and calls +render+.
      def render_with_meta_tags(*args, &block)
        meta_tags = {}
        meta_tags[:title]       = @page_title       if @page_title
        meta_tags[:keywords]    = @page_keywords    if @page_keywords
        meta_tags[:description] = @page_description if @page_description
        set_meta_tags(meta_tags)

        render_without_meta_tags(*args, &block)
      end

      # Set meta tags for the page.
      #
      # See <tt>MetaTags.set_meta_tags</tt> for details.
      def set_meta_tags(meta_tags)
        meta_tags ||= {}
        meta_tags[:open_graph] = meta_tags.delete(:og) if meta_tags.key?(:og)
        self.meta_tags.deep_merge!(meta_tags || {})
      end
      protected :set_meta_tags

      # Get meta tags for the page.
      def meta_tags
        @meta_tags ||= {}
      end
      protected :meta_tags
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
meta-tags-1.2.6	lib/meta_tags/controller_helper.rb
meta-tags-1.2.5	lib/meta_tags/controller_helper.rb