Merge pull request #735 from MITx/feature/arjun/unread_count

Unread counts + tracking for discussion

lms/djangoapps/django_comment_client/forum/views.py

@@ -43,6 +43,7 @@ def get_threads(request, course_id, discussion_id=None, per_page=THREADS_PER_PAG
         'tags': '',
         'commentable_id': discussion_id,
         'course_id': course_id,
+        'user_id': request.user.id,
     }
 
     if not request.GET.get('sort_key'):
@@ -81,6 +82,7 @@ def inline_discussion(request, course_id, discussion_id):
         # TODO (vshnayder): since none of this code seems to be aware of the fact that
         # sometimes things go wrong, I suspect that the js client is also not
         # checking for errors on request.  Check and fix as needed.
+        log.error("Error loading inline discussion threads.")
         raise Http404
 
     def infogetter(thread):
@@ -114,6 +116,7 @@ def forum_form_discussion(request, course_id):
         unsafethreads, query_params = get_threads(request, course_id)   # This might process a search query
         threads = [utils.safe_content(thread) for thread in unsafethreads]
     except (cc.utils.CommentClientError, cc.utils.CommentClientUnknownError) as err:
+        log.error("Error loading forum discussion threads: %s" % str(err))
         raise Http404
 
     user_info = cc.User.from_django_user(request.user).to_dict()
@@ -164,14 +167,18 @@ def forum_form_discussion(request, course_id):
 @login_required
 def single_thread(request, course_id, discussion_id, thread_id):
 
-    if request.is_ajax():
-        course = get_course_with_access(request.user, course_id, 'load')
-        user_info = cc.User.from_django_user(request.user).to_dict()
+    course = get_course_with_access(request.user, course_id, 'load')
+    cc_user = cc.User.from_django_user(request.user)
+    user_info = cc_user.to_dict()
+
+    try:
+        thread = cc.Thread.find(thread_id).retrieve(recursive=True, user_id=request.user.id)
+    except (cc.utils.CommentClientError, cc.utils.CommentClientUnknownError) as err:
+        log.error("Error loading single thread.")
+        raise Http404
+
+    if request.is_ajax():
 
-        try:
-            thread = cc.Thread.find(thread_id).retrieve(recursive=True)
-        except (cc.utils.CommentClientError, cc.utils.CommentClientUnknownError) as err:
-            raise Http404
         courseware_context = get_courseware_context(thread, course)
 
         annotated_content_info = utils.get_annotated_content_infos(course_id, thread, request.user, user_info=user_info)
@@ -188,13 +195,13 @@ def single_thread(request, course_id, discussion_id, thread_id):
         })
 
     else:
-        course = get_course_with_access(request.user, course_id, 'load')
         category_map = utils.get_discussion_category_map(course)
+
         try:
             threads, query_params = get_threads(request, course_id)
-            thread = cc.Thread.find(thread_id).retrieve(recursive=True)
             threads.append(thread.to_dict())
         except (cc.utils.CommentClientError, cc.utils.CommentClientUnknownError) as err:
+            log.error("Error loading single thread.")
             raise Http404
 
         course = get_course_with_access(request.user, course_id, 'load')
@@ -216,8 +223,7 @@ def single_thread(request, course_id, discussion_id, thread_id):
         #    course_id,
         #)
 
-        user_info = cc.User.from_django_user(request.user).to_dict()
-
+        
         def infogetter(thread):
             return utils.get_annotated_content_infos(course_id, thread, request.user, user_info)
 

lms/djangoapps/django_comment_client/utils.py

@@ -336,7 +336,8 @@ def safe_content(content):
         'endorsed', 'parent_id', 'thread_id', 'votes', 'closed', 'created_at',
         'updated_at', 'depth', 'type', 'commentable_id', 'comments_count',
         'at_position_list', 'children', 'highlighted_title', 'highlighted_body',
-        'courseware_title', 'courseware_url', 'tags'
+        'courseware_title', 'courseware_url', 'tags', 'unread_comments_count',
+        'read',
     ]
 
     if (content.get('anonymous') is False) and (content.get('anonymous_to_peers') is False):

lms/lib/comment_client/thread.py

@@ -60,7 +60,21 @@ class Thread(models.Model):
         else:
             return super(Thread, cls).url(action, params)
 
+    # TODO: This is currently overriding Model._retrieve only to add parameters
+    # for the request. Model._retrieve should be modified to handle this such
+    # that subclasses don't need to override for this.
     def _retrieve(self, *args, **kwargs):
         url = self.url(action='get', params=self.attributes)
-        response = perform_request('get', url, {'recursive': kwargs.get('recursive')})
+
+        request_params = { 
+                            'recursive': kwargs.get('recursive'),
+                            'user_id': kwargs.get('user_id'),
+                            'mark_as_read': kwargs.get('mark_as_read', True),
+                         }
+
+        # user_id may be none, in which case it shouldn't be part of the
+        # request.
+        request_params = strip_none(request_params)
+
+        response = perform_request('get', url, request_params)
         self.update_attributes(**response)

lms/static/coffee/src/discussion/discussion_router.coffee

@@ -27,6 +27,8 @@ if Backbone?
 
     showThread: (forum_name, thread_id) ->
       @thread = @discussion.get(thread_id)
+      @thread.set("unread_comments_count", 0)
+      @thread.set("read", true)
       @setActiveThread()
       if(@main)
         @main.cleanup()

lms/static/coffee/src/discussion/views/discussion_thread_list_view.coffee

@@ -130,6 +130,8 @@ if Backbone?
         content.addClass("followed")
       if thread.get('endorsed')
         content.addClass("resolved")
+      if thread.get('read')
+        content.addClass("read")
       @highlight(content)
 
 

lms/static/sass/_discussion.scss

@@ -1018,6 +1018,7 @@ body.discussion {
         text-shadow: 0 -1px 0 rgba(0, 0, 0, .3);
         box-shadow: 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 1px rgba(0, 0, 0, .2) inset;
       }
+
     }
   }
 
@@ -1204,12 +1205,13 @@ body.discussion {
         background-position: 0 -5px;
       }
 
-      &.new {
-       @include linear-gradient(top, #84d7fe, #99e0fe);
+      &.unread {
+        @include linear-gradient(top, #84d7fe, #60a8d6);
         color: #333;
 
         &:after {
           color: #99e0fe;
+          background-position: 0 0px;
         }
       }
     }

lms/templates/discussion/_underscore_templates.html

@@ -128,5 +128,13 @@
 </script>
 
 <script type="text/template" id="thread-list-item-template">
-    <a href="${'<%- id %>'}" data-id="${'<%- id %>'}"><span class="title">${"<%- title %>"}</span> <span class="comments-count">${"<%- comments_count %>"}</span><span class="votes-count">+${"<%- votes['up_count'] %>"}</span></a>
+    <a href="${'<%- id %>'}" data-id="${'<%- id %>'}">
+        <span class="title">${"<%- title %>"}</span> 
+        ${"<% if (unread_comments_count > 0) { %>"}
+            <span class="comments-count unread">${"<%- unread_comments_count %>"}</span>
+        ${"<% } else { %>"}
+            <span class="comments-count">${"<%- comments_count %>"}</span>
+        ${"<% } %>"}
+        <span class="votes-count">+${"<%- votes['up_count'] %>"}</span>
+    </a>
 </script>