Meta_tags

Meta tags allows a Rails application to include meta tags in HTML, depending on the action. Content can be set by I18n locales, Models or defined in ApplicationController.

Installing

1. Add this line to your Gemfile

   gem 'meta_tags', git: "git://github.com/vala/meta_tags.git"
   

2. Generate config file :

   rails generate meta_tags:config
   

Defining default values

In your ApplicationController

  meta_tags_defaults(
    title: "My title",
    description: "My description",
    keywords: Keywords,
    image: "/assets/illustration.jpg"
    # Facebook
    site_name: 'Mysite',
    type: 'website',
    # Twitter
    site: '@Mysite',
    card: 'summary, photo, gallery, product, app, player'
  )

In your locales

en:
  meta_tags:
    controller:
      posts:
        index:
          title: Test
          description: Test description

In a Controller

You can use the helper meta_tags_from to use data from the associated model app/controllers/posts_controller.rb

class PostsController < ApplicationController
  meta_tags_from :post

  def index
    @posts = Post.all
  end

  def show
    @post = Post.find(params[:id])
  end
end

app/models/post.rb

class Post < ActiveRecord::Base
  attr_accessible :description, :title, :image
  has_attached_file :image
end

Used methods can be defined in the initializer config/initializers/meta_tags.rb

MetaTags.config do |config|

  # Default title methods to be checked for title
  # config.title_methods = %w(title name)

  # Default decsription methods to be checked for description
  # config.description_methods = %w(description desc)

  # Default description methods to be checked for image
  # config.image_methods = %w(image picture avatar)
end

Overwrite in a controller

class HomeController < ApplicationController
  def index
    set_meta_tag(:title, "Accueil")
  end
end

View helper

!!!
%html
  %head
    = stylesheet_link_tag "application"
    = meta_tags :open_graph, :twitter