Rails 页面title的通俗解决方案示例

layout中：

#app/views/layouts/common.html.haml
%html
  %head
    %meta{"http-equiv" => "Content-Type", :content => "text/html; charset=utf-8"}
    = render :partial => "/shared/meta_tags"

    %link{ :href => "/images/favicon.png", :rel => "shortcut icon" }
    - logger.debug "Page title = #{@page_title}"
    %title= @page_title || "Default Title"
    = include_stylesheets :common
    = render :partial => "/shared/google_analytics_header"
  
  %body
    = render :partial => '/shared/account_header'
    = render :partial => '/shared/scoreit_header'

#app/views/shared/_meta_tags.html.haml
%meta{ "name" => "keywords", "content" => "performance, performance analytics, web performance, performance optimization, page speed, yslow, firebug, optimization"}
%meta{ "name" => "description", "content" => "Performance Analytics software by Default - Monitor, analyze, and improve the performance of your website for free."}
%meta{ 'property' => 'og:site_name', 'content' => 'Default!' }
%meta{ 'property' => 'og:image', 'content' => 'http://Default.com/images/logos/fblike_logo.png' }
%meta{ 'property' => 'og:title', 'content' => @facebook_title_tag || @page_title }

#app/views/layouts/application.html.haml

!!! Transitional 
%html 
  %head 
    %title= @page_title || I18n.t(:default_page_title)
    %link{ :rel=>"shortcut icon", 
      :href=>"/images/favicon.png",
      :type=>"image/x-icon"}
    %link{ :rel=>"icon",
      :href=>"/images/favicon.png",
      :type=>"image/x-icon"} 
    = stylesheet_link_tag("monitoring") 
    = stylesheet_link_tag("har")
    = yield(:head) 
  %body 
    #page
      #header 
        = yield(:header) 
        #navigation{:style => 'float:right'}
          - unless user_signed_in?
            = link_to "Sign up", new_user_registration_path
            = link_to "Sign in", new_user_session_path
          - else
            = link_to "Sign out", destroy_user_session_path
      = yield(:body) 
      #footer 
        = yield(:footer) 
    = javascript_include_tag :all, :cache => true 
    = yield(:javascript) 
    = render :partial => "shared/google_analytics"  

Controller

class HomeController < ApplicationController
  layout false
  
  def index
    @page_title = "Performance Analytics"
    @count = Monitoring::Index.count 
  end

end