Fix loading issues in rails_admin

Properly declare Admin module and explicitly list models to be
display in rails_admin

Gemfile.lock

@@ -196,6 +196,12 @@ GEM
       pry (>= 0.9.12)
       request_store (>= 1.0.5)
       thor (>= 0.18.1)
+    guard (2.6.1)
+      formatador (>= 0.2.4)
+      listen (~> 2.7)
+      lumberjack (~> 1.0)
+      pry (>= 0.9.12)
+      thor (>= 0.18.1)
     guard-cucumber (1.4.1)
       cucumber (>= 1.2.0)
       guard (>= 1.1.0)

app/controllers/admin/admin_controller.rb

+module Admin
+  class AdminController < ApplicationController
 
-class Admin::AdminController < ApplicationController
-
-  before_filter :authenticate_user!
-  before_filter :redirect_unless_admin
+    before_filter :authenticate_user!
+    before_filter :redirect_unless_admin
 
+  end
 end

app/controllers/admin/users_controller.rb

+module Admin
+  class UsersController < AdminController
 
-class Admin::UsersController < Admin::AdminController
+    def close_account
+      u = User.find(close_account_params)
+      u.close_account!
+      redirect_to user_search_path, notice: t('admins.user_search.account_closing_scheduled', name: u.username)
+    end
 
-  def close_account
-    u = User.find(close_account_params)
-    u.close_account!
-    redirect_to user_search_path, notice: t('admins.user_search.account_closing_scheduled', name: u.username)
-  end
-
-  private
+    private
 
-  def close_account_params
-    params.require(:id)
+    def close_account_params
+      params.require(:id)
+    end
   end
-
 end

config/initializers/rails_admin.rb

@@ -40,10 +40,41 @@ if Rails.env.production?
 
     #  ==> Included models
     # Add all excluded models here:
-    config.excluded_models = [AspectMembership, AspectVisibility, ShareVisibility, ConversationVisibility,  NotificationActor, Notifications::AlsoCommented, Notifications::CommentOnPost, Notifications::Liked, Notifications::Mentioned, Notifications::PrivateMessage, Notifications::RequestAccepted, Notifications::Reshared, Notifications::StartedSharing, Reshare, Services::Facebook, Services::Tumblr, Services::Twitter, UserPreference, ActsAsTaggableOn::Tag]
+    #config.excluded_models = []
 
     # Add models here if you want to go 'whitelist mode':
-    # config.included_models = [AccountDeletion, ActsAsTaggableOn::Tag, Aspect, AspectMembership, AspectVisibility, Block, Comment, Contact, Conversation, ConversationVisibility, Invitation, InvitationCode, Like, Mention, Message, Notification, NotificationActor, Notifications::AlsoCommented, Notifications::CommentOnPost, Notifications::Liked, Notifications::Mentioned, Notifications::PrivateMessage, Notifications::RequestAccepted, Notifications::Reshared, Notifications::StartedSharing, OEmbedCache, Participation, Person, Photo, Pod, Post, Profile, Reshare, Service, ServiceUser, Services::Facebook, Services::Tumblr, Services::Twitter, ShareVisibility, StatusMessage, TagFollowing, User, UserPreference]
+    config.included_models = %w[
+        AccountDeletion
+        Aspect
+        AspectMembership
+        Block
+        Comment
+        Contact
+        Conversation
+        Invitation
+        InvitationCode
+        Like
+        Location
+        Mention
+        Message
+        OEmbedCache
+        OpenGraphCache
+        Person
+        Photo
+        Profile
+        Pod
+        Poll
+        PollAnswer
+        Post
+        Profile
+        Report
+        Reshare
+        Role
+        Service
+        StatusMessage
+        User
+        UserPreference
+    ]
 
     # Application wide tried label methods for models' instances
     # config.label_methods << :description # Default is [:name, :title]