Added wiselinks_keywords for SEO

lib/assets/javascripts/_request_manager.js.coffee

@@ -81,6 +81,7 @@ class RequestManager
         =>
           @_title(response.title())
           @_description(response.description())
+          @_keywords(response.keywords())
           @_canonical(response.canonical())
           @_robots(response.robots())
           @_link_rel_prev(response.link_rel_prev())
@@ -106,6 +107,11 @@ class RequestManager
       $(document).trigger('page:description', decodeURI(value))
       $('meta[name="description"]').attr('content', decodeURI(value))
 
+  _keywords: (value) ->
+    if value?
+      $(document).trigger('page:keywords', decodeURI(value))
+      $('meta[name="keywords"]').attr('content', decodeURI(value))
+
   _canonical: (value) ->
     if value?
       $(document).trigger('page:canonical', decodeURI(value))

lib/assets/javascripts/_response.js.coffee

@@ -42,6 +42,15 @@ class Response
     else
       @xhr.getResponseHeader('X-Wiselinks-Description')
 
+  keywords: ->
+    @_keywords ?= @_extract_keywords()
+
+  _extract_keywords: ->
+    if @_is_full_document_response()
+      $('meta[name="keywords"]', @_get_doc()).text()
+    else
+      @xhr.getResponseHeader('X-Wiselinks-Keywords')
+
   canonical: ->
     @_canonical ?= @_extract_canonical()
 

lib/wiselinks/controller_methods.rb

@@ -4,6 +4,7 @@ module ControllerMethods
     def self.included(base)
       base.helper_method :wiselinks_title
       base.helper_method :wiselinks_description
+      base.helper_method :wiselinks_keywords
       base.helper_method :wiselinks_canonical
       base.helper_method :wiselinks_robots
       base.helper_method :wiselinks_link_rel_prev
@@ -31,6 +32,13 @@ def wiselinks_description(value)
       end
     end
 
+    def wiselinks_keywords(value)
+      if self.request.wiselinks? && value.present?
+        Wiselinks.log("keywords: #{value}")
+        self.response.headers['X-Wiselinks-Keywords'] = URI.encode(value)
+      end
+    end
+
     def wiselinks_canonical(value)
       if self.request.wiselinks? && value.present?
         Wiselinks.log("canonical: #{value}")