Méta données rajoutées, utiles pour le référencement

Gemfile

@@ -49,7 +49,8 @@ gem 'spring',        group: :development
 gem 'haml-rails'
 gem 'compass-rails'
 gem 'modernizr-rails'
-gem 'activeadmin', github: 'gregbell/active_admin'
+
+# Patch older browsers so they do understand html5
 gem 'webshims-rails'
 
 gem 'devise'
@@ -59,7 +60,9 @@ gem 'rails-i18n'
 gem 'i18n-active_record',
   git: 'git://github.com/svenfuchs/i18n-active_record.git',
   require: 'i18n/active_record'
+# A superb font to use as icons
 gem 'font-awesome-rails'
+# Validate mails submitted
 gem 'email_validator'
 # To display a patched diff for event descriptions
 gem 'differ'
@@ -67,6 +70,9 @@ gem 'differ'
 # The central piece of this application: the month calendar view
 gem 'simple_calendar'
 
+# A generic library to administrate the tool
+gem 'activeadmin', github: 'gregbell/active_admin'
+
 # Markdown display
 gem 'redcarpet'
 
@@ -80,6 +86,9 @@ gem 'openlayers-rails'
 gem 'tinymce-rails'
 gem 'tinymce-rails-langs'
 
+# SEO optimisations
+gem 'meta-tags'
+
 group :development do
   gem 'guard-livereload'
   gem 'guard-bundler'

Gemfile.lock

@@ -83,7 +83,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.7.1)
-    compass (0.12.6)
+    compass (0.12.7)
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
       sass (~> 3.2.19)
@@ -173,6 +173,8 @@ GEM
     mail (2.5.4)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
+    meta-tags (2.0.0)
+      actionpack (>= 3.0.0)
     method_source (0.8.2)
     mime-types (1.25.1)
     minitest (5.4.0)
@@ -311,6 +313,7 @@ DEPENDENCIES
   jbuilder (~> 2.0)
   jquery-rails
   jquery-turbolinks
+  meta-tags
   modernizr-rails
   mysql2
   openlayers-rails

app/controllers/events_controller.rb

@@ -23,6 +23,19 @@ class EventsController < ApplicationController
           end
           @events = @events.month start_date.change day: 1
         end
+
+        set_meta_tags description: t('layouts.application.subtitle'),
+          keywords: @events.pluck(:tags)
+            .join(' ')
+            .split
+            .group_by { |i| i }
+            .reject { |k, v| v.size < 2 }
+            .collect { |k, v| k },
+          DC: {
+            title: t('layouts.application.title'),
+            subject: t('layouts.application.subtitle'),
+            date: start_date.to_s
+          }
       }
 
       format.rss {
@@ -113,6 +126,19 @@ class EventsController < ApplicationController
         @event = Event.moderated
       end
       @event = @event.find params[:id]
+
+      set_meta_tags title: @event.title,
+        description: @event.description,
+        keywords: @event.tags,
+        DC: {
+          title: @event.title,
+          date: @event.start_time.to_s
+        },
+        geo: {
+          region: @event.related_region,
+          placename: @event.city,
+          position: "#{@event.related_city.try :latitude};#{@event.related_city.try :longitude}"
+        }
     end
 
     # Never trust parameters from the scary internet, only allow the white list through.

app/views/layouts/application.html.haml

@@ -2,19 +2,11 @@
 /[if IE]
 %html.no-js(lang="#{I18n.locale}")
   %head
-    %title= content_for?(:title) ? yield(:title) : t('.title')
+    = display_meta_tags site: t('.title')
 
     %meta(http-equiv='Content-Type' content='text/html; charset=utf-8')
     %meta(name='viewport' content='width=device-width, initial-scale=1.0')
-
-    %meta(name='description' content='Agende du Libre. Free Software Calendar')
-    %meta(name='author' content='Emmanuel Charpentier')
     %meta(name='robots' content='index, follow')
-    %meta(name='keywords' content='calendar, agenda, date')
-
-    %meta(name='dcterms.title' content='Free Calendar' lang='en')
-    %meta(name='dcterms.title' content='Agenda du Libre' lang='fr')
-    %meta(name='dcterms.subject' content='agenda')
 
     = favicon_link_tag '/favicon.ico'
     = auto_discovery_link_tag :rss, { controller: '/events', format: :rss }