Some Rails4 updates

Gemfile

@@ -49,6 +49,8 @@ else
   gem 'sprockets', git: 'https://github.com/SamSaffron/sprockets.git', branch: 'rails-compat'
   gem 'redis-rails'
   gem 'seed-fu'
+  gem 'activerecord-postgres-hstore'
+  gem 'active_attr'
 end
 
 gem 'redis'
@@ -71,8 +73,6 @@ gem 'rails_multisite', path: 'vendor/gems/rails_multisite'
 gem 'simple_handlebars_rails', path: 'vendor/gems/simple_handlebars_rails'
 
 gem 'redcarpet', require: false
-gem 'activerecord-postgres-hstore'
-gem 'active_attr' # until we get ActiveModel::Model with Rails 4
 gem 'airbrake', '3.1.2', require: false # errbit is broken with 3.1.3 for now
 gem 'clockwork', require: false
 gem 'eventmachine'

Gemfile.lock

@@ -248,7 +248,7 @@ GEM
     minitest (4.7.3)
     mocha (0.13.3)
       metaclass (~> 0.0.1)
-    multi_json (1.7.6)
+    multi_json (1.7.7)
     multipart-post (1.2.0)
     mustache (0.99.4)
     net-scp (1.1.0)

Gemfile_rails4.lock

@@ -125,9 +125,6 @@ GEM
       rack-test (~> 0.6.2)
     actionpack-action_caching (1.0.0)
       actionpack (>= 4.0.0.beta, < 5.0)
-    active_attr (0.8.2)
-      activemodel (>= 3.0.2, < 4.1)
-      activesupport (>= 3.0.2, < 4.1)
     activemodel (4.0.0)
       activesupport (= 4.0.0)
       builder (~> 3.1.0)
@@ -137,10 +134,6 @@ GEM
       activesupport (= 4.0.0)
       arel (~> 4.0.0)
     activerecord-deprecated_finders (1.0.3)
-    activerecord-postgres-hstore (0.7.6)
-      activerecord (>= 3.1)
-      pg-hstore (>= 1.1.5)
-      rake
     activesupport (4.0.0)
       i18n (~> 0.6, >= 0.6.4)
       minitest (~> 4.2)
@@ -316,7 +309,6 @@ GEM
       redis
       ruby-openid
     pg (0.15.1)
-    pg-hstore (1.1.7)
     polyglot (0.3.3)
     progress (2.4.0)
     protected_attributes (1.0.3)
@@ -478,9 +470,7 @@ PLATFORMS
 
 DEPENDENCIES
   actionpack-action_caching
-  active_attr
   active_model_serializers!
-  activerecord-postgres-hstore
   airbrake (= 3.1.2)
   annotate!
   barber

app/models/discourse_version_check.rb

@@ -1,9 +1,11 @@
 class DiscourseVersionCheck
-
-  # include ActiveModel::Model  <-- If we were using Rails 4, we could use this instead of active_attr
-  include ActiveAttr::Attributes
-  include ActiveAttr::MassAssignment
-  include ActiveModel::Serialization
+  if rails4?
+    include ActiveModel::Model
+  else
+    include ActiveAttr::Attributes
+    include ActiveAttr::MassAssignment
+    include ActiveModel::Serialization
+  end
 
   attr_accessor :latest_version, :critical_updates, :installed_version, :installed_sha, :missing_versions_count, :updated_at
 

app/models/topic.rb

@@ -51,9 +51,7 @@ class Topic < ActiveRecord::Base
     self.title = TextCleaner.clean_title(TextSentinel.title_sentinel(title).text) if errors[:title].empty?
   end
 
-  if rails4?
-    store_accessor :meta_data
-  else
+  unless rails4?
     serialize :meta_data, ActiveRecord::Coders::Hstore
   end
 

app/models/user_email_observer.rb

@@ -2,12 +2,22 @@ class UserEmailObserver < ActiveRecord::Observer
   observe :notification
 
   def after_commit(notification)
-    if notification.send(:transaction_include_action?, :create)
-      notification_type = Notification.types[notification.notification_type]
+    if rails4?
+      if notification.send(:transaction_include_any_action?, [:create])
+        notification_type = Notification.types[notification.notification_type]
 
-      # Delegate to email_user_{{NOTIFICATION_TYPE}} if exists
-      email_method = :"email_user_#{notification_type.to_s}"
-      send(email_method, notification) if respond_to?(email_method)
+        # Delegate to email_user_{{NOTIFICATION_TYPE}} if exists
+        email_method = :"email_user_#{notification_type.to_s}"
+        send(email_method, notification) if respond_to?(email_method)
+      end
+    else
+      if notification.send(:transaction_include_action?, :create)
+        notification_type = Notification.types[notification.notification_type]
+
+        # Delegate to email_user_{{NOTIFICATION_TYPE}} if exists
+        email_method = :"email_user_#{notification_type.to_s}"
+        send(email_method, notification) if respond_to?(email_method)
+      end
     end
   end
 

lib/discourse_observer.rb

@@ -33,12 +33,22 @@ else
   # Outside of test mode, use after_commit
   class DiscourseObserver < ActiveRecord::Observer
     def after_commit(model)
-      if model.send(:transaction_include_action?, :create)
-        after_create_delegator(model)
-      end
+      if rails4?
+        if model.send(:transaction_include_any_action?, [:create])
+          after_create_delegator(model)
+        end
 
-      if model.send(:transaction_include_action?, :destroy)
-        after_destroy_delegator(model)
+        if model.send(:transaction_include_any_action?, [:destroy])
+          after_destroy_delegator(model)
+        end
+      else
+        if model.send(:transaction_include_action?, :create)
+          after_create_delegator(model)
+        end
+
+        if model.send(:transaction_include_action?, :destroy)
+          after_destroy_delegator(model)
+        end
       end
 
     end