- Fixed "global name 'WrongCaptchaCode' is not defined" if norobots captcha,

but no other validation package is installed.

svn path=/plone.app.discussion/trunk/; revision=40574

plone/app/discussion/browser/validator.py

@@ -21,6 +21,11 @@ from plone.app.discussion.interfaces import ICaptcha
 from plone.app.discussion.interfaces import IDiscussionSettings
 from plone.app.discussion.interfaces import IDiscussionLayer
 
+try:
+    from collective.z3cform.norobots.validator import WrongNorobotsAnswer
+except ImportError:
+    pass
+
 try:
     from plone.formwidget.captcha.validator import WrongCaptchaCode
 except ImportError:
@@ -31,7 +36,6 @@ try:
 except ImportError:
     pass
 
-
 class CaptchaValidator(validator.SimpleFieldValidator):
     implements(IValidator)
     adapts(Interface, IDiscussionLayer, Interface, IField, Interface)
@@ -48,7 +52,10 @@ class CaptchaValidator(validator.SimpleFieldValidator):
             captcha = getMultiAdapter((aq_inner(self.context), self.request), 
                                       name=settings.captcha)
             if not captcha.verify(input=value):
-                raise WrongCaptchaCode
+                if settings.captcha == 'norobots':
+                    raise WrongNorobotsAnswer
+                else:
+                    raise WrongCaptchaCode
             else:
                 return True