Akismet spam protection plugin support added (collective.akismet).

svn path=/plone.app.discussion/trunk/; revision=37136

plone/app/discussion/browser/captcha.py

@@ -6,7 +6,7 @@ from persistent import Persistent
 
 from Products.CMFCore.utils import getToolByName
 
-from z3c.form import validator
+from z3c.form import interfaces, validator
 from z3c.form.field import Fields
 
 from zope import interface, schema
@@ -70,4 +70,5 @@ class CaptchaExtender(extensible.FormExtender):
             elif self.captcha == 'recaptcha':
                 from plone.formwidget.recaptcha import ReCaptchaFieldWidget
                 self.form.fields['captcha'].widgetFactory = ReCaptchaFieldWidget
-
+            elif self.captcha == 'akismet':
+                self.form.fields['captcha'].mode = interfaces.HIDDEN_MODE

plone/app/discussion/vocabularies.py

@@ -5,20 +5,28 @@ import zope.schema.vocabulary
 
 from plone.app.discussion.interfaces import _ 
 
-HAS_CAPTCHA=False
+HAS_CAPTCHA = False
 try:
      import plone.formwidget.captcha
      HAS_CAPTCHA = True
 except ImportError:
     pass
 
-HAS_RECAPTCHA=False
+HAS_RECAPTCHA = False
 try:
      import plone.formwidget.recaptcha
      HAS_RECAPTCHA = True
 except ImportError:
     pass
 
+HAS_AKISMET = False
+try:
+    from akismet import Akismet, AkismetError
+    HAS_AKISMET = True
+except ImportError:
+    pass
+
+
 def captcha_vocabulary(context):
     """Vocabulary with all available captcha implementations.
     """
@@ -41,6 +49,13 @@ def captcha_vocabulary(context):
                 value='recaptcha',
                 token='recaptcha',
                 title='ReCaptcha'))
+    if HAS_AKISMET:
+        terms.append(
+            zope.schema.vocabulary.SimpleTerm(
+                value='akismet',
+                token='akismet',
+                title='Akismet'))    
+    
     return zope.schema.vocabulary.SimpleVocabulary(terms)
 
 interface.alsoProvides(captcha_vocabulary,