Move lib/spree/core/controller_helpers/common.rb from spree

lib/spree/core/controller_helpers/common.rb

@@ -0,0 +1,86 @@
+module Spree
+  module Core
+    module ControllerHelpers
+      module Common
+        extend ActiveSupport::Concern
+        included do
+          helper_method :title
+          helper_method :title=
+          helper_method :accurate_title
+
+          layout :get_layout
+
+          before_filter :set_user_language
+
+          protected
+
+          # Convenience method for firing instrumentation events with the default payload hash
+          def fire_event(name, extra_payload = {})
+            ActiveSupport::Notifications.instrument(name, default_notification_payload.merge(extra_payload))
+          end
+
+          # Creates the hash that is sent as the payload for all notifications. Specific notifications will
+          # add additional keys as appropriate. Override this method if you need additional data when
+          # responding to a notification
+          def default_notification_payload
+            {:user => try_spree_current_user, :order => current_order}
+          end
+
+          # can be used in views as well as controllers.
+          # e.g. <% self.title = 'This is a custom title for this view' %>
+          attr_writer :title
+
+          def title
+            title_string = @title.present? ? @title : accurate_title
+            if title_string.present?
+              if Spree::Config[:always_put_site_name_in_title]
+                [title_string, default_title].join(' - ')
+              else
+                title_string
+              end
+            else
+              default_title
+            end
+          end
+
+          def default_title
+            Spree::Config[:site_name]
+          end
+
+          # this is a hook for subclasses to provide title
+          def accurate_title
+            Spree::Config[:default_seo_title]
+          end
+
+          def render_404(exception = nil)
+            respond_to do |type|
+              type.html { render :status => :not_found, :file    => "#{::Rails.root}/public/404", :formats => [:html], :layout => nil}
+              type.all  { render :status => :not_found, :nothing => true }
+            end
+          end
+
+          private
+
+          def set_user_language
+            locale = session[:locale]
+            locale ||= config_locale if respond_to?(:config_locale, true)
+            locale ||= Rails.application.config.i18n.default_locale
+            locale ||= I18n.default_locale unless I18n.available_locales.map(&:to_s).include?(locale)
+            I18n.locale = locale
+          end
+
+          # Returns which layout to render.
+          # 
+          # You can set the layout you want to render inside your Spree configuration with the +:layout+ option.
+          # 
+          # Default layout is: +app/views/spree/layouts/spree_application+
+          # 
+          def get_layout
+            layout ||= Spree::Config[:layout]
+          end
+
+        end
+      end
+    end
+  end
+end