Bringing in Arjun's changes.

lib/helpers.rb

@@ -84,7 +84,9 @@ helpers do
   end
 
   def handle_threads_query(comment_threads)
-    comment_threads = comment_threads.where(:course_id=>params[:course_id])
+    if params[:course_id]
+      comment_threads = comment_threads.where(:course_id=>params[:course_id])
+    end
     if CommentService.config[:cache_enabled]
       query_params = params.slice(*%w[course_id commentable_id sort_key sort_order page per_page user_id])
       memcached_key = "threads_query_#{query_params.hash}"

spec/api/comment_thread_spec.rb

@@ -62,7 +62,7 @@ describe "app" do
         changed_thread = CommentThread.find(thread.id)
         changed_thread.body.should == "new body"
         changed_thread.title.should == "new title"
-        changed_thread.commentable_id.should == "new commentable_id"
+        changed_thread.commentable_id.should == "new_commentable_id"
       end
       it "returns 400 when the thread does not exist" do
         put "/api/v1/threads/does_not_exist", body: "new body", title: "new title"

spec/spec_helper.rb

@@ -20,6 +20,9 @@ end
 
 RSpec.configure do |config|
   config.include Rack::Test::Methods
+  config.treat_symbols_as_metadata_keys_with_true_values = true
+  config.filter_run focus: true
+  config.run_all_when_everything_filtered = true
 end
 
 Mongoid.configure do |config|