module MetaTags::ControllerHelper

def meta_tags

Get meta tags for the page. 
def meta_tags
  @meta_tags ||= MetaTagsCollection.new
end

def render(*args, &block)

@page_description instance variables and calls +render+.
Processes the @page_title, @page_keywords, and 
def render(*args, &block)
  meta_tags[:title] = @page_title if defined?(@page_title) && @page_title
  meta_tags[:keywords] = @page_keywords if defined?(@page_keywords) && @page_keywords
  meta_tags[:description] = @page_description if defined?(@page_description) && @page_description
  super
end

def set_meta_tags(meta_tags)

See MetaTags::ViewHelper#set_meta_tags for details.

Set meta tags for the page. 
def set_meta_tags(meta_tags)
  self.meta_tags.update(meta_tags)
end