Make comments and controlpanel views more robust, so they don't break if no workflow is assigned to the 'Discussion Item' content type.

CHANGES.txt

@@ -1,6 +1,14 @@
 Changelog
 =========
 
+2.1.5 (unreleased)
+------------------
+
+- Make comments and controlpanel views more robust, so they don't break if no
+  workflow is assigned to the 'Discussion Item' content type.
+  [timo]
+
+
 2.1.4 (2012-02-29)
 ------------------
 

plone/app/discussion/browser/comments.pt

@@ -34,7 +34,7 @@
                              author_home_url python:view.get_commenter_home_url(username=reply.author_username);
                              has_author_link python:author_home_url and not isAnon;
                              portrait_url python:view.get_commenter_portrait(reply.author_username);
-                             review_state python:wtool.getInfoFor(reply, 'review_state');"
+                             review_state python:wtool.getInfoFor(reply, 'review_state', 'none');"
                  tal:attributes="class python:'comment replyTreeLevel'+str(depth)+' state-'+str(review_state);
                                  style string:margin-left: ${depth}em;
                                  id string:${reply/getId}"

plone/app/discussion/browser/comments.py

@@ -310,14 +310,16 @@ class CommentsViewlet(ViewletBase):
 
         # comment workflow
         wftool = getToolByName(context, "portal_workflow", None)
-        comment_workflow = wftool.getChainForPortalType('Discussion Item')[0]
-        comment_workflow = wftool[comment_workflow]
-        # check if the current workflow implements a pending state. If this is
-        # true comments are moderated
-        if 'pending' in comment_workflow.states:
-            message = message + " " + \
-                translate(Message(COMMENT_DESCRIPTION_MODERATION_ENABLED),
-                          context=self.request)
+        workflow_chain = wftool.getChainForPortalType('Discussion Item')
+        if workflow_chain:
+            comment_workflow = workflow_chain[0]
+            comment_workflow = wftool[comment_workflow]
+            # check if the current workflow implements a pending state. If this
+            # is true comments are moderated
+            if 'pending' in comment_workflow.states:
+                message = message + " " + \
+                    translate(Message(COMMENT_DESCRIPTION_MODERATION_ENABLED),
+                              context=self.request)
 
         return message
 

plone/app/discussion/browser/controlpanel.py

@@ -99,7 +99,7 @@ class DiscussionSettingsControlPanel(controlpanel.ControlPanelFormWrapper):
         registry = queryUtility(IRegistry)
         settings = registry.forInterface(IDiscussionSettings, check=False)
         wftool = getToolByName(self.context, "portal_workflow", None)
-        wf = wftool.getChainForPortalType('Discussion Item')
+        workflow_chain = wftool.getChainForPortalType('Discussion Item')
         output = []
 
         # Globally enabled
@@ -107,8 +107,8 @@ class DiscussionSettingsControlPanel(controlpanel.ControlPanelFormWrapper):
             output.append("globally_enabled")
 
         # Comment moderation
-        if 'one_state_workflow' not in wf and \
-        'comment_review_workflow' not in wf:
+        if 'one_state_workflow' not in workflow_chain and \
+        'comment_review_workflow' not in workflow_chain:
             output.append("moderation_custom")
         elif settings.moderation_enabled:
             output.append("moderation_enabled")
@@ -125,9 +125,8 @@ class DiscussionSettingsControlPanel(controlpanel.ControlPanelFormWrapper):
 
         # Workflow
         wftool = getToolByName(self.context, 'portal_workflow', None)
-        discussion_workflow = \
-            wftool.getChainForPortalType('Discussion Item')[0]
-        if discussion_workflow:
+        if workflow_chain:
+            discussion_workflow = workflow_chain[0]
             output.append(discussion_workflow)
 
         # Merge all settings into one string
@@ -150,8 +149,9 @@ class DiscussionSettingsControlPanel(controlpanel.ControlPanelFormWrapper):
         """Returns a warning string if a custom comment workflow is enabled.
         """
         wftool = getToolByName(self.context, "portal_workflow", None)
-        wf = wftool.getChainForPortalType('Discussion Item')
-        if 'one_state_workflow' in wf or 'comment_review_workflow' in wf:
+        workflow_chain = wftool.getChainForPortalType('Discussion Item')
+        if 'one_state_workflow' in workflow_chain \
+        or 'comment_review_workflow' in workflow_chain:
             return
         return True
 
@@ -180,11 +180,13 @@ def notify_configuration_changed(event):
         if 'workflow' in event.data:
             registry = queryUtility(IRegistry)
             settings = registry.forInterface(IDiscussionSettings, check=False)
-            wf = wftool.getChainForPortalType('Discussion Item')[0]
-            if wf == 'one_state_workflow':
-                settings.moderation_enabled = False
-            elif wf == 'comment_review_workflow':
-                settings.moderation_enabled = True
-            else:
-                # Custom workflow
-                pass
+            workflow_chain = wftool.getChainForPortalType('Discussion Item')
+            if workflow_chain:
+                workflow = workflow_chain[0]
+                if workflow == 'one_state_workflow':
+                    settings.moderation_enabled = False
+                elif workflow == 'comment_review_workflow':
+                    settings.moderation_enabled = True
+                else:
+                    # Custom workflow
+                    pass