Add Rails admin

config/initializers/rails_admin.rb

@@ -0,0 +1,66 @@
+RailsAdmin.config do |config|
+
+  ### Popular gems integration
+
+  ## == Devise ==
+  # config.authenticate_with do
+  #   warden.authenticate! scope: :user
+  # end
+  # config.current_user_method(&:current_user)
+
+  ## == CancanCan ==
+  # config.authorize_with :cancancan
+
+  ## == Pundit ==
+  # config.authorize_with :pundit
+  config.authorize_with do
+    redirect_to main_app.root_path unless current_user.admin?
+    # unless current_user.admin?
+    #   flash[:alert] = 'Access denied.'
+    #   redirect_to main_app.root_path
+    # end
+  end
+
+  ## == PaperTrail ==
+  # config.audit_with :paper_trail, 'User', 'PaperTrail::Version' # PaperTrail >= 3.0.0
+
+  ### More at https://github.com/sferik/rails_admin/wiki/Base-configuration
+
+  ## == Gravatar integration ==
+  ## To disable Gravatar integration in Navigation Bar set to false
+  # config.show_gravatar = true
+
+  config.actions do
+    dashboard                     # mandatory
+    index                         # mandatory
+    new
+    export
+    bulk_delete
+    show
+    edit
+    delete
+    show_in_app
+
+    ## With an audit adapter, you can add:
+    # history_index
+    # history_show
+  end
+
+  # stolen from https://github.com/kaminari/kaminari/issues/162#issuecomment-52083985
+  if defined?(WillPaginate)
+    module WillPaginate
+      module ActiveRecord
+        module RelationMethods
+          def per(value = nil) per_page(value) end
+          def total_count() count end
+          def first_page?() self == first end
+          def last_page?() self == last end
+        end
+      end
+      module CollectionMethods
+        alias_method :num_pages, :total_pages
+      end
+    end
+  end
+end
+