- prefetch for Facebook

sc/social/like/interfaces.py

@@ -212,3 +212,16 @@ class ISocialLikeSettings(model.Schema):
         required=False,
         default='',
     )
+
+    model.fieldset(
+        'open_graph', label=u'Open Graph', fields=['facebook_prefetch_enable'])
+
+    facebook_prefetch_enable = schema.Bool(
+        title=_(u'Enable Prefetching Facebook?'),
+        description=_(
+            u'help_facebook_prefetch_enable',
+            default=u'If enabled, an event is triggered so that Facebook '
+                    u'downloads mobile content before someone clicks on a link.'
+        ),
+        default=False,
+    )

sc/social/like/locales/pt_BR/LC_MESSAGES/sc.social.like.po

@@ -422,3 +422,12 @@ msgstr "Cancelar"
 #: sc/social/like/vocabularies.py:36
 msgid "vertical"
 msgstr "vertical"
+
+
+#: ./sc/social/like/interfaces.py:220
+msgid "Enable Prefetching Facebook?"
+msgstr ""
+
+#: ./sc/social/like/interfaces.py:222
+msgid "help_facebook_prefetch_enable"
+msgstr "Se ativado, um evento é acionado para que o Facebook faça o download de conteúdo móvel antes de alguém clicar em um link."

sc/social/like/locales/sc.social.like.pot

@@ -422,3 +422,11 @@ msgstr ""
 #: ./sc/social/like/vocabularies.py:36
 msgid "vertical"
 msgstr ""
+
+#: ./sc/social/like/interfaces.py:220
+msgid "Enable Prefetching Facebook?"
+msgstr ""
+
+#: ./sc/social/like/interfaces.py:222
+msgid "help_facebook_prefetch_enable"
+msgstr ""

sc/social/like/subscribers.py

@@ -26,6 +26,7 @@
 from zope.component import getUtility
 from zope.schema.interfaces import WrongType
 
+import requests
 import traceback
 
 
@@ -148,9 +149,31 @@ def check_sharing_best_practices_on_editing(obj, event):
     state = api.content.get_state(obj)
     if state in ('published', ):
         check_sharing_best_practices(obj)
+        prefetch_facebook(obj)
 
 
 def check_sharing_best_practices_on_publishing(obj, event):
     """Event subscriber for content being published."""
     if event.status['review_state'] in ('published', ):
         check_sharing_best_practices(obj)
+        prefetch_facebook(obj)
+
+
+def prefetch_facebook(obj):
+    """Prefetching in object if enable."""
+
+    record = ISocialLikeSettings.__identifier__ + '.facebook_prefetch_enable'
+    prefetch_enable = api.portal.get_registry_record(record, default=False)
+
+    if not prefetch_enable:
+        return
+
+    url = obj.absolute_url()
+    r = requests.post('https://graph.facebook.com/?id=' + url + '&scrape=true',
+                      timeout=10,
+                      verify=False)
+
+    if r.status_code == '200':
+        logger.info(u'Prefetching: ' + url)
+    else:
+        logger.warn(u'Prefetching fail')

setup.py

@@ -52,6 +52,7 @@
           'Products.CMFPlone >=4.3',
           'Products.CMFQuickInstallerTool',
           'Products.GenericSetup',
+          'requests',
           'setuptools',
           'zope.component',
           'zope.i18nmessageid',