migration view and very simple first test added.

svn path=/plone.app.discussion/trunk/; revision=27894

plone/app/discussion/browser/configure.zcml

@@ -8,6 +8,15 @@
     <!-- Traversal adapter -->
     <adapter factory=".traversal.ConversationNamespace" name="conversation" />
 
+    <!-- Migration view -->
+    <browser:page
+        for="Products.CMFCore.interfaces.ISiteRoot"
+        name="comment-migration"
+        layer="..interfaces.IDiscussionLayer"
+        class=".migration.View"
+        permission="cmf.ManagePortal"
+        />
+
     <!-- Moderation view -->
     <browser:page
         for="Products.CMFCore.interfaces.ISiteRoot"

plone/app/discussion/browser/migration.py

@@ -0,0 +1,62 @@
+from Acquisition import aq_inner, aq_parent
+
+from Products.Five.browser import BrowserView
+from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile
+
+from Products.CMFCore.utils import getToolByName
+
+from Products.CMFPlone import PloneMessageFactory as _
+
+from Products.statusmessages.interfaces import IStatusMessage
+
+from Products.CMFCore.interfaces import IContentish
+
+from zope.component import createObject
+
+from plone.app.discussion.interfaces import IConversation
+
+
+class View(BrowserView):
+    """Migration View
+    """
+
+    def __call__(self):
+
+        context = aq_inner(self.context)
+        out = []
+        def log(msg):
+            context.plone_log(msg)
+            out.append(msg)
+
+        log("Comment migration started.")
+
+        # Find content
+        catalog = getToolByName(context, 'portal_catalog')
+        dtool = context.portal_discussion
+        brains = catalog.searchResults(
+                    object_provides='Products.CMFCore.interfaces._content.IContentish')
+        log("Found %s content object to migrate." % len(brains))
+
+        for brain in brains:
+            if brain.portal_type != 'Discussion Item':
+                old_comments = []
+                obj = brain.getObject()
+                talkback = getattr( obj, 'talkback', None )
+                if talkback:
+                    replies = talkback.objectValues()
+                    log("%s: Found talkback with %s comments to migrate"\
+                        % (obj.absolute_url(relative=1), len(replies)))
+                    for reply in replies:
+                        old_comments.append(reply)
+
+                # Build up new conversation/comments structure
+                conversation = IConversation(obj)
+
+                for old_comment in old_comments:
+                    comment = createObject('plone.Comment')
+                    comment.title = old_comment.Title()
+                    comment.text = old_comment.text
+                    conversation.addComment(comment)
+
+        log("Comment migration finished.")
+        return out