Merge pull request #1683 from MITx/feature/kevin/pinning_patch

Feature/kevin/pinning patch

.gitignore

@@ -29,4 +29,5 @@ cover_html/
 .idea/
 .redcar/
 chromedriver.log
+/nbproject
 ghostdriver.log

common/lib/xmodule/xmodule/capa_module.py

@@ -310,11 +310,26 @@ class CapaModule(XModule):
             is_survey_question = (self.max_attempts == 0)
             needs_reset = self.is_completed() and self.rerandomize == "always"
 
+            # If the student has unlimited attempts, and their answers
+            # are not randomized, then we do not need a save button
+            # because they can use the "Check" button without consequences.
+            #
+            # The consequences we want to avoid are:
+            # * Using up an attempt (if max_attempts is set)
+            # * Changing the current problem, and no longer being
+            #   able to view it (if rerandomize is "always")
+            #
+            # In those cases. the if statement below is false,
+            # and the save button can still be displayed.
+            #
+            if self.max_attempts is None and self.rerandomize != "always":
+                return False
+
             # If the problem is closed (and not a survey question with max_attempts==0),
-            # then do NOT show the reset button
+            # then do NOT show the save button
             # If we're waiting for the user to reset a randomized problem
-            # then do NOT show the reset button
-            if (self.closed() and not is_survey_question) or needs_reset:
+            # then do NOT show the save button
+            elif (self.closed() and not is_survey_question) or needs_reset:
                 return False
             else:
                 return True
@@ -403,7 +418,7 @@ class CapaModule(XModule):
         # if we want to show a check button, and False otherwise
         # This works because non-empty strings evaluate to True
         if self.should_show_check_button():
-            check_button = self.check_button_name() 
+            check_button = self.check_button_name()
         else:
             check_button = False
 
@@ -556,7 +571,7 @@ class CapaModule(XModule):
         else:
             answers = self.lcp.get_question_answers()
 
-	    # answers (eg <solution>) may have embedded images
+            # answers (eg <solution>) may have embedded images
         #   but be careful, some problems are using non-string answer dicts
         new_answers = dict()
         for answer_id in answers:
@@ -606,7 +621,7 @@ class CapaModule(XModule):
             to 'input_1' in the returned dict)
         '''
         answers = dict()
-        
+
         for key in get:
             # e.g. input_resistor_1 ==> resistor_1
             _, _, name = key.partition('_')
@@ -729,7 +744,7 @@ class CapaModule(XModule):
         event_info['answers'] = answers
 
         # Too late. Cannot submit
-        if self.closed() and not self.max_attempts==0:
+        if self.closed() and not self.max_attempts ==0:
             event_info['failure'] = 'closed'
             self.system.track_function('save_problem_fail', event_info)
             return {'success': False,
@@ -747,7 +762,7 @@ class CapaModule(XModule):
 
         self.system.track_function('save_problem_success', event_info)
         msg = "Your answers have been saved"
-        if not self.max_attempts==0:
+        if not self.max_attempts ==0:
             msg += " but not graded. Hit 'Check' to grade them."
         return {'success': True,
                 'msg': msg}
@@ -784,7 +799,7 @@ class CapaModule(XModule):
             # reset random number generator seed (note the self.lcp.get_state()
             # in next line)
             self.lcp.seed = None
-    
+
 
         self.lcp = LoncapaProblem(self.definition['data'],
                                   self.location.html_id(), self.lcp.get_state(),
@@ -793,7 +808,7 @@ class CapaModule(XModule):
         event_info['new_state'] = self.lcp.get_state()
         self.system.track_function('reset_problem', event_info)
 
-        return { 'success': True,
+        return {'success': True,
                 'html': self.get_problem_html(encapsulate=False)}
 
 
@@ -821,13 +836,13 @@ class CapaDescriptor(RawDescriptor):
     def get_context(self):
         _context = RawDescriptor.get_context(self)
         _context.update({'markdown': self.metadata.get('markdown', ''),
-                         'enable_markdown' : 'markdown' in self.metadata})
+                         'enable_markdown': 'markdown' in self.metadata})
         return _context
 
     @property
     def editable_metadata_fields(self):
         """Remove any metadata from the editable fields which have their own editor or shouldn't be edited by user."""
-        subset = [field for field in super(CapaDescriptor,self).editable_metadata_fields
+        subset = [field for field in super(CapaDescriptor, self).editable_metadata_fields
                   if field not in ['markdown', 'empty']]
         return subset
 

common/lib/xmodule/xmodule/foldit_module.py

@@ -87,7 +87,7 @@ class FolditModule(XModule):
         from foldit.models import Score
 
         leaders = [(e['username'], e['score']) for e in Score.get_tops_n(10)]
-        leaders.sort(key=lambda x: x[1])
+        leaders.sort(key=lambda x: -x[1])
 
         return leaders
 

common/lib/xmodule/xmodule/tests/test_capa_module.py

@@ -356,7 +356,7 @@ class CapaModuleTest(unittest.TestCase):
         valid_get_dict = self._querydict_from_dict({'input_2[]': ['test1', 'test2']})
         result = CapaModule.make_dict_of_responses(valid_get_dict)
         self.assertTrue('2' in result)
-        self.assertEqual(['test1','test2'], result['2'])
+        self.assertEqual(['test1', 'test2'], result['2'])
 
         # If we use [] at the end of a key name, we should always
         # get a list, even if there's just one value
@@ -374,7 +374,7 @@ class CapaModuleTest(unittest.TestCase):
         # One of the values would overwrite the other, so detect this
         # and raise an exception
         invalid_get_dict = self._querydict_from_dict({'input_1[]': 'test 1',
-                                                    'input_1': 'test 2' })
+                                                    'input_1': 'test 2'})
         with self.assertRaises(ValueError):
             result = CapaModule.make_dict_of_responses(invalid_get_dict)
 
@@ -412,7 +412,7 @@ class CapaModuleTest(unittest.TestCase):
             mock_html.return_value = "Test HTML"
 
             # Check the problem
-            get_request_dict = { CapaFactory.input_key(): '3.14' }
+            get_request_dict = { CapaFactory.input_key(): '3.14'}
             result = module.check_problem(get_request_dict)
 
         # Expect that the problem is marked correct
@@ -434,7 +434,7 @@ class CapaModuleTest(unittest.TestCase):
             mock_is_correct.return_value = False
 
             # Check the problem
-            get_request_dict = { CapaFactory.input_key(): '0' }
+            get_request_dict = { CapaFactory.input_key(): '0'}
             result = module.check_problem(get_request_dict)
 
         # Expect that the problem is marked correct
@@ -452,7 +452,7 @@ class CapaModuleTest(unittest.TestCase):
         with patch('xmodule.capa_module.CapaModule.closed') as mock_closed:
             mock_closed.return_value = True
             with self.assertRaises(xmodule.exceptions.NotFoundError):
-                get_request_dict = { CapaFactory.input_key(): '3.14' }
+                get_request_dict = { CapaFactory.input_key(): '3.14'}
                 module.check_problem(get_request_dict)
 
         # Expect that number of attempts NOT incremented
@@ -468,7 +468,7 @@ class CapaModuleTest(unittest.TestCase):
 
         # Expect that we cannot submit
         with self.assertRaises(xmodule.exceptions.NotFoundError):
-            get_request_dict = { CapaFactory.input_key(): '3.14' }
+            get_request_dict = { CapaFactory.input_key(): '3.14'}
             module.check_problem(get_request_dict)
 
         # Expect that number of attempts NOT incremented
@@ -483,7 +483,7 @@ class CapaModuleTest(unittest.TestCase):
         module.lcp.done = True
 
         # Expect that we can submit successfully
-        get_request_dict = { CapaFactory.input_key(): '3.14' }
+        get_request_dict = { CapaFactory.input_key(): '3.14'}
         result = module.check_problem(get_request_dict)
 
         self.assertEqual(result['success'], 'correct')
@@ -504,7 +504,7 @@ class CapaModuleTest(unittest.TestCase):
             mock_is_queued.return_value = True
             mock_get_queuetime.return_value = datetime.datetime.now()
 
-            get_request_dict = { CapaFactory.input_key(): '3.14' }
+            get_request_dict = { CapaFactory.input_key(): '3.14'}
             result = module.check_problem(get_request_dict)
 
             # Expect an AJAX alert message in 'success'
@@ -521,7 +521,7 @@ class CapaModuleTest(unittest.TestCase):
         with patch('capa.capa_problem.LoncapaProblem.grade_answers') as mock_grade:
             mock_grade.side_effect = capa.responsetypes.StudentInputError('test error')
 
-            get_request_dict = { CapaFactory.input_key(): '3.14' }
+            get_request_dict = { CapaFactory.input_key(): '3.14'}
             result = module.check_problem(get_request_dict)
 
             # Expect an AJAX alert message in 'success'
@@ -595,11 +595,11 @@ class CapaModuleTest(unittest.TestCase):
         module.lcp.done = False
 
         # Save the problem
-        get_request_dict = { CapaFactory.input_key(): '3.14' }
+        get_request_dict = { CapaFactory.input_key(): '3.14'}
         result = module.save_problem(get_request_dict)
 
         # Expect that answers are saved to the problem
-        expected_answers = { CapaFactory.answer_key(): '3.14' }
+        expected_answers = { CapaFactory.answer_key(): '3.14'}
         self.assertEqual(module.lcp.student_answers, expected_answers)
 
         # Expect that the result is success
@@ -617,7 +617,7 @@ class CapaModuleTest(unittest.TestCase):
             mock_closed.return_value = True
 
             # Try to save the problem
-            get_request_dict = { CapaFactory.input_key(): '3.14' }
+            get_request_dict = { CapaFactory.input_key(): '3.14'}
             result = module.save_problem(get_request_dict)
 
         # Expect that the result is failure
@@ -631,7 +631,7 @@ class CapaModuleTest(unittest.TestCase):
         module.lcp.done = True
 
         # Try to save
-        get_request_dict = { CapaFactory.input_key(): '3.14' }
+        get_request_dict = { CapaFactory.input_key(): '3.14'}
         result = module.save_problem(get_request_dict)
 
         # Expect that we cannot save
@@ -645,7 +645,7 @@ class CapaModuleTest(unittest.TestCase):
         module.lcp.done = True
 
         # Try to save
-        get_request_dict = { CapaFactory.input_key(): '3.14' }
+        get_request_dict = { CapaFactory.input_key(): '3.14'}
         result = module.save_problem(get_request_dict)
 
         # Expect that we succeed
@@ -657,7 +657,7 @@ class CapaModuleTest(unittest.TestCase):
         # Just in case, we also check what happens if we have
         # more attempts than allowed.
         attempts = random.randint(1, 10)
-        module = CapaFactory.create(attempts=attempts-1, max_attempts=attempts)
+        module = CapaFactory.create(attempts=attempts -1, max_attempts=attempts)
         self.assertEqual(module.check_button_name(), "Final Check")
 
         module = CapaFactory.create(attempts=attempts, max_attempts=attempts)
@@ -667,14 +667,14 @@ class CapaModuleTest(unittest.TestCase):
         self.assertEqual(module.check_button_name(), "Final Check")
 
         # Otherwise, button name is "Check"
-        module = CapaFactory.create(attempts=attempts-2, max_attempts=attempts)
+        module = CapaFactory.create(attempts=attempts -2, max_attempts=attempts)
         self.assertEqual(module.check_button_name(), "Check")
 
-        module = CapaFactory.create(attempts=attempts-3, max_attempts=attempts)
+        module = CapaFactory.create(attempts=attempts -3, max_attempts=attempts)
         self.assertEqual(module.check_button_name(), "Check")
 
         # If no limit on attempts, then always show "Check"
-        module = CapaFactory.create(attempts=attempts-3)
+        module = CapaFactory.create(attempts=attempts -3)
         self.assertEqual(module.check_button_name(), "Check")
 
         module = CapaFactory.create(attempts=0)
@@ -682,7 +682,7 @@ class CapaModuleTest(unittest.TestCase):
 
     def test_should_show_check_button(self):
 
-        attempts = random.randint(1,10)
+        attempts = random.randint(1, 10)
 
         # If we're after the deadline, do NOT show check button
         module = CapaFactory.create(due=self.yesterday_str)
@@ -718,7 +718,7 @@ class CapaModuleTest(unittest.TestCase):
 
     def test_should_show_reset_button(self):
 
-        attempts = random.randint(1,10)
+        attempts = random.randint(1, 10)
 
         # If we're after the deadline, do NOT show the reset button
         module = CapaFactory.create(due=self.yesterday_str)
@@ -755,7 +755,7 @@ class CapaModuleTest(unittest.TestCase):
 
     def test_should_show_save_button(self):
 
-        attempts = random.randint(1,10)
+        attempts = random.randint(1, 10)
 
         # If we're after the deadline, do NOT show the save button
         module = CapaFactory.create(due=self.yesterday_str)
@@ -772,13 +772,24 @@ class CapaModuleTest(unittest.TestCase):
         module.lcp.done = True
         self.assertFalse(module.should_show_save_button())
 
+        # If the user has unlimited attempts and we are not randomizing,
+        # then do NOT show a save button
+        # because they can keep using "Check"
+        module = CapaFactory.create(max_attempts=None, rerandomize="never")
+        module.lcp.done = False
+        self.assertFalse(module.should_show_save_button())
+
+        module = CapaFactory.create(max_attempts=None, rerandomize="never")
+        module.lcp.done = True
+        self.assertFalse(module.should_show_save_button())
+
         # Otherwise, DO show the save button
         module = CapaFactory.create()
         module.lcp.done = False
         self.assertTrue(module.should_show_save_button())
 
-        # If we're not randomizing, then we can re-save
-        module = CapaFactory.create(rerandomize="never")
+        # If we're not randomizing and we have limited attempts,  then we can save
+        module = CapaFactory.create(rerandomize="never", max_attempts=2)
         module.lcp.done = True
         self.assertTrue(module.should_show_save_button())
 
@@ -797,7 +808,7 @@ class CapaModuleTest(unittest.TestCase):
         self.assertFalse(module.should_show_save_button())
 
         # If the user is out of attempts, do NOT show the save button
-        attempts = random.randint(1,10)
+        attempts = random.randint(1, 10)
         module = CapaFactory.create(attempts=attempts,
                                     max_attempts=attempts,
                                     force_save_button="true")
@@ -823,9 +834,9 @@ class CapaModuleTest(unittest.TestCase):
 
         # We've tested the show/hide button logic in other tests,
         # so here we hard-wire the values
-        show_check_button = bool(random.randint(0,1) % 2)
-        show_reset_button = bool(random.randint(0,1) % 2)
-        show_save_button = bool(random.randint(0,1) % 2)
+        show_check_button = bool(random.randint(0, 1) % 2)
+        show_reset_button = bool(random.randint(0, 1) % 2)
+        show_save_button = bool(random.randint(0, 1) % 2)
 
         module.should_show_check_button = Mock(return_value=show_check_button)
         module.should_show_reset_button = Mock(return_value=show_reset_button)
@@ -848,7 +859,7 @@ class CapaModuleTest(unittest.TestCase):
         self.assertEqual(html, "<div>Test Template HTML</div>")
 
         # Check the rendering context
-        render_args,_ = module.system.render_template.call_args
+        render_args, _ = module.system.render_template.call_args
         self.assertEqual(len(render_args), 2)
 
         template_name = render_args[0]
@@ -889,7 +900,7 @@ class CapaModuleTest(unittest.TestCase):
         html = module.get_problem_html()
 
         # Check the rendering context
-        render_args,_ = module.system.render_template.call_args
+        render_args, _ = module.system.render_template.call_args
         context = render_args[1]
         self.assertTrue("error" in context['problem']['html'])
 

common/static/coffee/src/discussion/content.coffee

@@ -79,6 +79,17 @@ if Backbone?
           @getContent(id).updateInfo(info)
       $.extend @contentInfos, infos
 
+    pinThread: ->
+      pinned = @get("pinned")
+      @set("pinned",pinned)
+      @trigger "change", @
+
+    unPinThread: ->
+      pinned = @get("pinned")
+      @set("pinned",pinned)
+      @trigger "change", @
+
+
   class @Thread extends @Content
     urlMappers:
       'retrieve' : -> DiscussionUtil.urlFor('retrieve_single_thread', @discussion.id, @id)
@@ -91,6 +102,8 @@ if Backbone?
       'delete'   : -> DiscussionUtil.urlFor('delete_thread', @id)
       'follow'   : -> DiscussionUtil.urlFor('follow_thread', @id)
       'unfollow' : -> DiscussionUtil.urlFor('unfollow_thread', @id)
+      'pinThread'   : -> DiscussionUtil.urlFor("pin_thread", @id)
+      'unPinThread' : -> DiscussionUtil.urlFor("un_pin_thread", @id)
 
     initialize: ->
       @set('thread', @)

common/static/coffee/src/discussion/discussion.coffee

@@ -58,10 +58,31 @@ if Backbone?
           @current_page = response.page
 
     sortByDate: (thread) ->
-      thread.get("created_at")
+        #   
+        #The comment client asks each thread for a value by which to sort the collection
+        #and calls this sort routine regardless of the order returned from the LMS/comments service
+        #so, this takes advantage of this per-thread value and returns tomorrow's date
+        #for pinned threads, ensuring that they appear first, (which is the intent of pinned threads)
+        #
+        if thread.get('pinned')
+          #use tomorrow's date
+          today = new Date();
+          new Date(today.getTime() + (24 * 60 * 60 * 1000));
+        else
+          thread.get("created_at")
+
 
     sortByDateRecentFirst: (thread) ->
-      -(new Date(thread.get("created_at")).getTime())
+        #
+        #Same as above
+        #but negative to flip the order (newest first)
+        #
+        if thread.get('pinned')
+          #use tomorrow's date
+          today = new Date();
+          -(new Date(today.getTime() + (24 * 60 * 60 * 1000)));
+        else
+          -(new Date(thread.get("created_at")).getTime())
       #return String.fromCharCode.apply(String,
       #  _.map(thread.get("created_at").split(""),
       #        ((c) -> return 0xffff - c.charChodeAt()))

common/static/coffee/src/discussion/utils.coffee

@@ -50,6 +50,8 @@ class @DiscussionUtil
       delete_thread           : "/courses/#{$$course_id}/discussion/threads/#{param}/delete"
       upvote_thread           : "/courses/#{$$course_id}/discussion/threads/#{param}/upvote"
       downvote_thread         : "/courses/#{$$course_id}/discussion/threads/#{param}/downvote"
+      pin_thread              : "/courses/#{$$course_id}/discussion/threads/#{param}/pin"   
+      un_pin_thread           : "/courses/#{$$course_id}/discussion/threads/#{param}/unpin"
       undo_vote_for_thread    : "/courses/#{$$course_id}/discussion/threads/#{param}/unvote"
       follow_thread           : "/courses/#{$$course_id}/discussion/threads/#{param}/follow"
       unfollow_thread         : "/courses/#{$$course_id}/discussion/threads/#{param}/unfollow"

common/static/coffee/src/discussion/views/discussion_thread_show_view.coffee

@@ -3,6 +3,7 @@ if Backbone?
 
     events:
       "click .discussion-vote": "toggleVote"
+      "click .admin-pin": "togglePin"
       "click .action-follow": "toggleFollowing"
       "click .action-edit": "edit"
       "click .action-delete": "delete"
@@ -24,6 +25,7 @@ if Backbone?
       @delegateEvents()
       @renderDogear()
       @renderVoted()
+      @renderPinned()
       @renderAttrs()
       @$("span.timeago").timeago()
       @convertMath()
@@ -41,8 +43,20 @@ if Backbone?
       else
         @$("[data-role=discussion-vote]").removeClass("is-cast")
 
+    renderPinned: =>
+      if @model.get("pinned")
+        @$("[data-role=thread-pin]").addClass("pinned")  
+        @$("[data-role=thread-pin]").removeClass("notpinned")  
+        @$(".discussion-pin .pin-label").html("Pinned")
+      else
+        @$("[data-role=thread-pin]").removeClass("pinned")  
+        @$("[data-role=thread-pin]").addClass("notpinned")  
+        @$(".discussion-pin .pin-label").html("Pin Thread")
+
+
     updateModelDetails: =>
       @renderVoted()
+      @renderPinned()
       @$("[data-role=discussion-vote] .votes-count-number").html(@model.get("votes")["up_count"])
 
     convertMath: ->
@@ -99,6 +113,36 @@ if Backbone?
     delete: (event) ->
       @trigger "thread:delete", event
 
+    togglePin: (event) ->
+      event.preventDefault()
+      if @model.get('pinned')
+        @unPin()
+      else
+        @pin()
+      
+    pin: ->
+      url = @model.urlFor("pinThread")
+      DiscussionUtil.safeAjax
+        $elem: @$(".discussion-pin")
+        url: url
+        type: "POST"
+        success: (response, textStatus) =>
+          if textStatus == 'success'
+            @model.set('pinned', true)
+        error: =>
+          $('.admin-pin').text("Pinning not currently available")
+       
+    unPin: ->
+      url = @model.urlFor("unPinThread")
+      DiscussionUtil.safeAjax
+        $elem: @$(".discussion-pin")
+        url: url
+        type: "POST"
+        success: (response, textStatus) =>
+          if textStatus == 'success'
+            @model.set('pinned', false)
+
+
     toggleClosed: (event) ->
       $elem = $(event.target)
       url = @model.urlFor('close')
@@ -137,3 +181,5 @@ if Backbone?
       if @model.get('username')?
         params = $.extend(params, user:{username: @model.username, user_url: @model.user_url})
       Mustache.render(@template, params)
+
+     

common/static/js/capa/genex/genex.css

@@ -57,10 +57,15 @@ pre, #dna-strand {
   background: white;
 }
 .gwt-DialogBox .dialogBottomCenter {
+  background: url(images/hborder.png) repeat-x 0px -2945px;
+  -background: url(images/hborder_ie6.png) repeat-x 0px -2144px;
 }
 .gwt-DialogBox .dialogMiddleLeft {
+  background: url(images/vborder.png) repeat-y -31px 0px;
 }
 .gwt-DialogBox .dialogMiddleRight {
+  background: url(images/vborder.png) repeat-y -32px 0px;
+  -background: url(images/vborder_ie6.png) repeat-y -32px 0px;
 }
 .gwt-DialogBox .dialogTopLeftInner {
   width: 10px;
@@ -82,12 +87,20 @@ pre, #dna-strand {
   zoom: 1;
 }
 .gwt-DialogBox .dialogTopLeft {
+  background: url(images/circles.png) no-repeat -20px 0px;
+  -background: url(images/circles_ie6.png) no-repeat -20px 0px;
 }
 .gwt-DialogBox .dialogTopRight {
+  background: url(images/circles.png) no-repeat -28px 0px;
+  -background: url(images/circles_ie6.png) no-repeat -28px 0px;
 }
 .gwt-DialogBox .dialogBottomLeft {
+  background: url(images/circles.png) no-repeat 0px -36px;
+  -background: url(images/circles_ie6.png) no-repeat 0px -36px;
 }
 .gwt-DialogBox .dialogBottomRight {
+  background: url(images/circles.png) no-repeat -8px -36px;
+  -background: url(images/circles_ie6.png) no-repeat -8px -36px;
 }
 * html .gwt-DialogBox .dialogTopLeftInner {
   width: 10px;

common/static/js/capa/genex/genex.nocache.js

@@ -1,4 +1,4 @@
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lms/djangoapps/django_comment_client/base/urls.py

@@ -12,6 +12,8 @@ urlpatterns = patterns('django_comment_client.base.views',
     url(r'threads/(?P<thread_id>[\w\-]+)/upvote$', 'vote_for_thread', {'value': 'up'}, name='upvote_thread'),
     url(r'threads/(?P<thread_id>[\w\-]+)/downvote$', 'vote_for_thread', {'value': 'down'}, name='downvote_thread'),
     url(r'threads/(?P<thread_id>[\w\-]+)/unvote$', 'undo_vote_for_thread', name='undo_vote_for_thread'),
+    url(r'threads/(?P<thread_id>[\w\-]+)/pin$', 'pin_thread', name='pin_thread'),
+    url(r'threads/(?P<thread_id>[\w\-]+)/unpin$', 'un_pin_thread', name='un_pin_thread'),
     url(r'threads/(?P<thread_id>[\w\-]+)/follow$', 'follow_thread', name='follow_thread'),
     url(r'threads/(?P<thread_id>[\w\-]+)/unfollow$', 'unfollow_thread', name='unfollow_thread'),
     url(r'threads/(?P<thread_id>[\w\-]+)/close$', 'openclose_thread', name='openclose_thread'),

lms/djangoapps/django_comment_client/base/views.py

@@ -116,6 +116,10 @@ def create_thread(request, course_id, commentable_id):
     
     thread.save()
 
+    #patch for backward compatibility to comments service
+    if not 'pinned' in thread.attributes:
+        thread['pinned'] = False
+    
     if post.get('auto_subscribe', 'false').lower() == 'true':
         user = cc.User.from_django_user(request.user)
         user.follow(thread)
@@ -289,6 +293,21 @@ def undo_vote_for_thread(request, course_id, thread_id):
     user.unvote(thread)
     return JsonResponse(utils.safe_content(thread.to_dict()))
 
+@require_POST
+@login_required
+@permitted
+def pin_thread(request, course_id, thread_id):
+    user = cc.User.from_django_user(request.user)
+    thread = cc.Thread.find(thread_id)
+    thread.pin(user,thread_id)
+    return JsonResponse(utils.safe_content(thread.to_dict()))
+
+def un_pin_thread(request, course_id, thread_id):
+    user = cc.User.from_django_user(request.user)
+    thread = cc.Thread.find(thread_id)
+    thread.un_pin(user,thread_id)
+    return JsonResponse(utils.safe_content(thread.to_dict()))
+
 
 @require_POST
 @login_required

lms/djangoapps/django_comment_client/forum/views.py

@@ -91,12 +91,18 @@ def get_threads(request, course_id, discussion_id=None, per_page=THREADS_PER_PAG
 
     #now add the group name if the thread has a group id
     for thread in threads:
+        
         if thread.get('group_id'):
             thread['group_name'] = get_cohort_by_id(course_id, thread.get('group_id')).name
             thread['group_string'] = "This post visible only to Group %s." % (thread['group_name'])
         else:
             thread['group_name'] = ""
             thread['group_string'] = "This post visible to everyone."
+        
+        #patch for backward compatibility to comments service
+        if not 'pinned' in thread:
+            thread['pinned'] = False
+        
 
     query_params['page'] = page
     query_params['num_pages'] = num_pages
@@ -210,6 +216,9 @@ def forum_form_discussion(request, course_id):
 
         user_cohort_id = get_cohort_id(request.user, course_id)
 
+    
+        
+
         context = {
             'csrf': csrf(request)['csrf_token'],
             'course': course,
@@ -241,6 +250,11 @@ def single_thread(request, course_id, discussion_id, thread_id):
 
     try:
         thread = cc.Thread.find(thread_id).retrieve(recursive=True, user_id=request.user.id)
+        
+        #patch for backward compatibility with comments service
+        if not 'pinned' in thread.attributes:
+            thread['pinned'] = False
+        
     except (cc.utils.CommentClientError, cc.utils.CommentClientUnknownError) as err:
         log.error("Error loading single thread.")
         raise Http404
@@ -281,6 +295,10 @@ def single_thread(request, course_id, discussion_id, thread_id):
             if thread.get('group_id') and not thread.get('group_name'):
                 thread['group_name'] = get_cohort_by_id(course_id, thread.get('group_id')).name
 
+            #patch for backward compatibility with comments service
+            if not "pinned" in thread:
+                thread["pinned"] = False
+
         threads = [utils.safe_content(thread) for thread in threads]
 
         #recent_active_threads = cc.search_recent_active_threads(

lms/djangoapps/django_comment_client/permissions.py

@@ -90,6 +90,8 @@ VIEW_PERMISSIONS = {
     'undo_vote_for_comment':    [['unvote', 'is_open']],
     'vote_for_thread'   :       [['vote', 'is_open']],
     'undo_vote_for_thread':     [['unvote', 'is_open']],
+    'pin_thread':    ['create_comment'],
+    'un_pin_thread':    ['create_comment'],
     'follow_thread'     :       ['follow_thread'],
     'follow_commentable':       ['follow_commentable'],
     'follow_user'       :       ['follow_user'],

lms/djangoapps/django_comment_client/utils.py

@@ -406,7 +406,7 @@ def safe_content(content):
         'updated_at', 'depth', 'type', 'commentable_id', 'comments_count',
         'at_position_list', 'children', 'highlighted_title', 'highlighted_body',
         'courseware_title', 'courseware_url', 'tags', 'unread_comments_count',
-        'read', 'group_id', 'group_name', 'group_string'
+        'read', 'group_id', 'group_name', 'group_string', 'pinned'
     ]
 
     if (content.get('anonymous') is False) and (content.get('anonymous_to_peers') is False):

lms/lib/comment_client/models.py

@@ -1,4 +1,4 @@
-from utils import *
+from .utils import *
 
 
 class Model(object):

lms/lib/comment_client/thread.py

@@ -11,12 +11,12 @@ class Thread(models.Model):
         'closed', 'tags', 'votes', 'commentable_id', 'username', 'user_id',
         'created_at', 'updated_at', 'comments_count', 'unread_comments_count',
         'at_position_list', 'children', 'type', 'highlighted_title',
-        'highlighted_body', 'endorsed', 'read', 'group_id', 'group_name'
+        'highlighted_body', 'endorsed', 'read', 'group_id', 'group_name', 'pinned'
     ]
 
     updatable_fields = [
         'title', 'body', 'anonymous', 'anonymous_to_peers', 'course_id',
-        'closed', 'tags', 'user_id', 'commentable_id', 'group_id', 'group_name'
+        'closed', 'tags', 'user_id', 'commentable_id', 'group_id', 'group_name', 'pinned'
     ]
 
     initializable_fields = updatable_fields
@@ -79,3 +79,23 @@ class Thread(models.Model):
 
         response = perform_request('get', url, request_params)
         self.update_attributes(**response)
+        
+    def pin(self, user, thread_id):
+        url = _url_for_pin_thread(thread_id)
+        params = {'user_id': user.id}
+        request = perform_request('put', url, params)
+        self.update_attributes(request)    
+
+    def un_pin(self, user, thread_id):
+        url = _url_for_un_pin_thread(thread_id)
+        params = {'user_id': user.id}
+        request = perform_request('put', url, params)
+        self.update_attributes(request)    
+        
+        
+def _url_for_pin_thread(thread_id):
+    return "{prefix}/threads/{thread_id}/pin".format(prefix=settings.PREFIX, thread_id=thread_id)      
+       
+def _url_for_un_pin_thread(thread_id):
+    return "{prefix}/threads/{thread_id}/unpin".format(prefix=settings.PREFIX, thread_id=thread_id)      
+       

lms/static/sass/_discussion.scss

@@ -2442,4 +2442,39 @@ body.discussion {
     color:#000;
     font-style: italic;
     background-color:#fff;
-  }
+  }
+
+.discussion-pin {
+      font-size: 12px;
+      float:right;
+      padding-right: 5px;
+      font-style: italic; 
+    }  
+    
+.notpinned .icon
+{
+  display: inline-block; 
+  width: 10px; 
+  height: 14px;
+  padding-right: 3px;
+  background: transparent url('../images/unpinned.png') no-repeat 0 0; 
+}
+
+.pinned .icon
+{
+  display: inline-block; 
+  width: 10px; 
+  height: 14px; 
+  padding-right: 3px;
+  background: transparent url('../images/pinned.png') no-repeat 0 0; 
+}
+
+.pinned span {
+  color: #B82066;
+  font-style: italic;
+}
+
+.notpinned span {
+  color: #888;
+  font-style: italic;
+}

lms/templates/discussion/_underscore_templates.html

@@ -45,6 +45,18 @@
       </header>
 
       <div class="post-body">${'<%- body %>'}</div>
+      % if course and has_permission(user, 'openclose_thread', course.id):
+      <div class="admin-pin discussion-pin notpinned" data-role="thread-pin" data-tooltip="pin this thread">                
+      <i class="icon"></i><span class="pin-label">Pin Thread</span></div> 
+
+      %else:
+      ${"<% if (pinned) { %>"}
+      <div class="discussion-pin notpinned" data-role="thread-pin" data-tooltip="pin this thread">                
+      <i class="icon"></i><span class="pin-label">Pin Thread</span></div> 
+      ${"<% }  %>"}  
+      % endif
+      
+      
       ${'<% if (obj.courseware_url) { %>'}
       <div class="post-context">
           (this post is about <a href="${'<%- courseware_url%>'}">${'<%- courseware_title %>'}</a>)

lms/templates/feed.rss

@@ -6,9 +6,18 @@
   <link type="text/html" rel="alternate" href="http://blog.edx.org/"/>
   ##<link type="application/atom+xml" rel="self" href="https://github.com/blog.atom"/>
   <title>EdX Blog</title>
-  <updated>2013-02-20T14:00:12-07:00</updated>
+  <updated>2013-03-14T14:00:12-07:00</updated>
   <entry>
-    <id>tag:www.edx.org,2012:Post/13</id>
+    <id>tag:www.edx.org,2013:Post/15</id>
+    <published>2013-03-14T10:00:00-07:00</published>
+    <updated>2013-03-14T10:00:00-07:00</updated>
+    <link type="text/html" rel="alternate" href="/courses/MITx/2.01x/2013_Spring/about"/>
+    <title>New mechanical engineering course open for enrollment</title>
+    <content type="html">&lt;img src=&quot;${static.url('images/press/releases/201x_240x180.jpg')}&quot; /&gt;
+        &lt;p&gt;&lt;/p&gt;</content>
+  </entry>
+  <entry>
+    <id>tag:www.edx.org,2013:Post/14</id>
     <published>2013-02-20T10:00:00-07:00</published>
     <updated>2013-02-20T10:00:00-07:00</updated>
     <link type="text/html" rel="alternate" href="${reverse('press/edx-expands-internationally')}"/>
@@ -17,7 +26,7 @@
         &lt;p&gt;&lt;/p&gt;</content>
   </entry>
   <entry>
-    <id>tag:www.edx.org,2012:Post/13</id>
+    <id>tag:www.edx.org,2013:Post/14</id>
     <published>2013-01-30T10:00:00-07:00</published>
     <updated>2013-01-30T10:00:00-07:00</updated>
     <link type="text/html" rel="alternate" href="${reverse('press/eric-lander-secret-of-life')}"/>
@@ -26,7 +35,7 @@
         &lt;p&gt;&lt;/p&gt;</content>
   </entry>
   <entry>
-    <id>tag:www.edx.org,2012:Post/11</id>
+    <id>tag:www.edx.org,2013:Post/12</id>
     <published>2013-01-22T10:00:00-07:00</published>
     <updated>2013-01-22T10:00:00-07:00</updated>
     <link type="text/html" rel="alternate" href="${reverse('press/lewin-course-announcement')}"/>
@@ -35,7 +44,7 @@
         &lt;p&gt;&lt;/p&gt;</content>
   </entry>
   <entry>
-    <id>tag:www.edx.org,2012:Post/12</id>
+    <id>tag:www.edx.org,2013:Post/11</id>
     <published>2013-01-29T10:00:00-07:00</published>
     <updated>2013-01-29T10:00:00-07:00</updated>
     <link type="text/html" rel="alternate" href="${reverse('press/bostonx-announcement')}"/>

lms/templates/static_templates/jobs.html

@@ -48,11 +48,12 @@
             <li>A great working experience where everyone cares and wants to change the world (no, we’re not kidding)</li>
           </ul>
           <p>While we appreciate every applicant&rsquo;s interest, only those under consideration will be contacted. We regret that phone calls will not be accepted.  Equal opportunity employer.</p>
+          <p>All positions are located in our Cambridge offices.</p>
         </div>
       </article>
 
 
-      <!-- Template        
+      <!-- Template
            <article id="SOME-JOB" class="job">
              <div class="inner-wrapper">
                <h3><strong>TITLE</strong></h3>