3 files changed, 23 insertions, 1 deletions
diff --git a/app/models/blob.rb b/app/models/blob.rb
index f82126f8e65..801d3442803 100644
--- a/app/models/blob.rb
+++ b/app/models/blob.rb
@@ -58,6 +58,10 @@ class Blob < SimpleDelegator
     binary? && extname.downcase.delete('.') == 'sketch'
   end
 
+  def stl?
+    extname.downcase.delete('.') == 'stl'
+  end
+
   def size_within_svg_limits?
     size <= MAXIMUM_SVG_SIZE
   end
@@ -81,6 +85,8 @@ class Blob < SimpleDelegator
       'notebook'
     elsif sketch?
       'sketch'
+    elsif stl?
+      'stl'
     elsif text?
       'text'
     else
diff --git a/app/models/issue.rb b/app/models/issue.rb
index 472796df9df..f9704b0d754 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -40,6 +40,8 @@ class Issue < ActiveRecord::Base
 
   scope :include_associations, -> { includes(:assignee, :labels, project: :namespace) }
 
+  after_save :expire_etag_cache
+
   attr_spammable :title, spam_title: true
   attr_spammable :description, spam_description: true
 
@@ -252,4 +254,13 @@ class Issue < ActiveRecord::Base
   def publicly_visible?
     project.public? && !confidential?
   end
+
+  def expire_etag_cache
+    key = Gitlab::Routing.url_helpers.rendered_title_namespace_project_issue_path(
+      project.namespace,
+      project,
+      self
+    )
+    Gitlab::EtagCaching::Store.new.touch(key)
+  end
 end
diff --git a/app/models/project.rb b/app/models/project.rb
index 12fd0668ff8..1f95d00baf8 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -349,10 +349,15 @@ class Project < ActiveRecord::Base
     end
 
     def sort(method)
-      if method == 'storage_size_desc'
+      case method.to_s
+      when 'storage_size_desc'
         # storage_size is a joined column so we need to
         # pass a string to avoid AR adding the table name
         reorder('project_statistics.storage_size DESC, projects.id DESC')
+      when 'latest_activity_desc'
+        reorder(last_activity_at: :desc)
+      when 'latest_activity_asc'
+        reorder(last_activity_at: :asc)
       else
         order_by(method)
       end