show login form instead of the commenting form to anonymous users.

svn path=/plone.app.discussion/trunk/; revision=27194

plone/app/discussion/browser/comments.pt

@@ -5,6 +5,18 @@
                    errors options/state/getErrors|nothing;"
            i18n:domain="plone">
 
+    <div class="reply"
+         tal:condition="isAnon">
+        <form tal:attributes="action view/login_action">
+            <input class="standalone"
+                   style="margin-bottom: 1.25em;"
+                   type="submit"
+                   value="Log in to add comments"
+                   i18n:attributes="value label_login_to_add_comments;"
+                   />
+        </form>
+    </div>
+
     <div class="discussion"
          tal:condition="python:replies or (userHasReplyPermission and isDiscussionAllowed) or (isAnon and not userHasReplyPermission and isDiscussionAllowed)">
         <tal:getreplies repeat="reply_dict replies">
@@ -73,7 +85,21 @@
         </tal:getreplies>
     </div>
 
-    <div class="reply">
+    <div class="reply"
+         tal:condition="isAnon">
+        <form tal:attributes="action view/login_action">
+            <input class="standalone"
+                   style="margin-bottom: 1.25em;"
+                   type="submit"
+                   value="Log in to add comments"
+                   i18n:attributes="value label_login_to_add_comments;"
+                   />
+        </form>
+    </div>
+
+    <div class="reply"
+         tal:condition="not:isAnon">
+
         <fieldset>
 
             <legend i18n:translate="legend_add_comment">Add comment</legend>

plone/app/discussion/browser/comments.py

@@ -1,5 +1,7 @@
 from datetime import datetime
 
+from urllib import quote as url_quote
+
 from zope.interface import implements
 
 from zope.component import createObject
@@ -16,6 +18,8 @@ from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile
 
 from Products.CMFCore.utils import getToolByName
 
+from plone.app.layout.viewlets.common import ViewletBase
+
 from plone.app.discussion.interfaces import IComment, IReplies
 from plone.app.discussion.conversation import conversationAdapterFactory
 
@@ -32,7 +36,7 @@ class View(BrowserView):
         comment_id = aq_parent(self).id
         self.request.response.redirect(aq_parent(aq_parent(aq_parent(self))).absolute_url() + '#comment-' + comment_id)
 
-class CommentsViewlet(BrowserView):
+class CommentsViewlet(ViewletBase):
     """Discussion Viewlet
     """
 
@@ -40,13 +44,6 @@ class CommentsViewlet(BrowserView):
 
     template = ViewPageTemplateFile('comments.pt')
 
-    def __init__(self, context, request, view, manager):
-        super(CommentsViewlet, self).__init__(context, request)
-        self.__parent__ = view
-        self.view = view
-        self.manager = manager
-        self.portal_state = getMultiAdapter((context, self.request), name=u"plone_portal_state")
-
     def update(self):
         super(CommentsViewlet, self).update()
         self.portal_discussion = getToolByName(self.context, 'portal_discussion', None)
@@ -69,6 +66,8 @@ class CommentsViewlet(BrowserView):
     def is_anonymous(self):
         return self.portal_state.anonymous()
 
+    def login_action(self):
+        return '%s/login_form?came_from=%s' % (self.navigation_root_url, url_quote(self.request.get('URL', '')),)
 
     def format_time(self, time):
         # TODO: to localized time not working!!!