Update display when creating new post.

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

@@ -12,6 +12,7 @@ class @DiscussionThreadListView extends Backbone.View
   initialize: ->
     @displayedCollection = new Discussion(@collection.models)
     @collection.on "change", @reloadDisplayedCollection
+    @collection.on "add", @addAndSelectThread
     @sidebar_padding = 10
     @sidebar_header_height = 87
 
@@ -24,6 +25,16 @@ class @DiscussionThreadListView extends Backbone.View
     if active
       @setActiveThread(thread_id)
 
+  addAndSelectThread: (thread) =>
+    commentable_id = thread.get("commentable_id")
+    commentable = @$(".board-name[data-discussion_id]").filter(-> $(this).data("discussion_id").id == commentable_id)
+    commentable.click()
+    @displayedCollection.add thread
+    content = @renderThread(thread)
+    $(".post-list").prepend content
+    content.wrap("<li data-id='#{thread.get('id')}' />")
+    content.click()
+
   updateSidebar: =>
 
     scrollTop = $(window).scrollTop();
@@ -153,8 +164,7 @@ class @DiscussionThreadListView extends Backbone.View
     item = $(event.target).closest('li')
     if item.find("span.board-name").data("discussion_id") == "#all"
       item = item.parent()
-    discussionIds = _.compact _.map item.find("span.board-name"), (board) -> $(board).data("discussion_id")
-    discussionIds = _.map discussionIds, (info) -> info.id
+    discussionIds = _.map item.find(".board-name[data-discussion_id]"), (board) -> $(board).data("discussion_id").id
     filtered = @collection.filter (thread) =>
       _.include(discussionIds, thread.get('commentable_id'))
     @displayedCollection.reset filtered

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

@@ -30,10 +30,10 @@ class @NewPostView extends Backbone.View
     toggleTopicDropdown: (event) ->
         event.stopPropagation()
         if @menuOpen
-            @hideTopicDropdown()            
+            @hideTopicDropdown()
         else
-            @showTopicDropdown()            
-    
+            @showTopicDropdown()
+
     showTopicDropdown: () ->
         @menuOpen = true
         @dropdownButton.addClass('dropped')
@@ -85,7 +85,7 @@ class @NewPostView extends Backbone.View
         width = test.width()
         test.remove()
         return width
-    
+
     fitName: (name) ->
         width = @getNameWidth(name)
         if width < @maxNameWidth
@@ -136,6 +136,7 @@ class @NewPostView extends Backbone.View
                 auto_subscribe: follow
             error: DiscussionUtil.formErrorHandler(@$(".new-post-form-errors"))
             success: (response, textStatus) =>
+                # TODO: Move this out of the callback, this makes it feel sluggish
                 thread = new Thread response['content']
                 DiscussionUtil.clearFormErrors(@$(".new-post-form-errors"))
                 @$el.hide()
@@ -144,20 +145,6 @@ class @NewPostView extends Backbone.View
                 @$(".new-post-tags").val("")
                 @$(".new-post-tags").importTags("")
                 @collection.add thread
-                @collection.trigger "reset"
-                @trigger "thread:created", thread.id
-
-                #@$el.children(".threads").prepend($thread)
-                # no idea what this is
-                #@$el.children(".blank").remove()
-                #@$(".new-post-similar-posts").empty()
-                #@$(".new-post-similar-posts-wrapper").hide()
-                #DiscussionUtil.setWmdContent @$el, $.proxy(@$, @), "new-post-body", ""
-
-                #thread = @model.addThread response.content
-                #threadView = new ThreadView el: $thread[0], model: thread
-                #thread.updateInfo response.annotated_content_info
-                #@cancelNewPost()
 
     setActiveItem: (event) ->
         if event.which == 13
@@ -182,6 +169,3 @@ class @NewPostView extends Backbone.View
         scrollTarget = Math.min(index * itemHeight, $(".topic_menu").scrollTop())
         scrollTarget = Math.max(index * itemHeight - $(".topic_menu").height() + itemHeight, scrollTarget)
         $(".topic_menu").scrollTop(scrollTarget)
-
-
-