engines.rb in cells-3.9.1

- old
+ new

@@ -1,42 +1,42 @@
 module Cells
   # Now <tt>Rails::Engine</tt>s can contribute to Cells view paths.
   # By default, any 'app/cells' found inside any Engine is automatically included into Cells view paths.
   #
   # You can customize the view paths changing/appending to the <tt>'app/cell_views'</tt> path configuration:
-  # 
+  #
   #   module MyAwesome
   #     class Engine < Rails::Engine
   #       # loads views from 'cell/views' and NOT from 'app/cells'
   #       config.paths.add 'app/cell_views', :with => 'cell/views'
-  # 
+  #
   #       # appends 'lib/my_cells_view_path' to this Railtie view path contribution
   #       config.paths['app/cell_views'] << 'lib/my_cells_view_path'
   #     end
   #   end
-  # 
+  #
   # You can manually specify which Engines will be added to Cell view paths
-  # 
+  #
   #   Cell::Base.config.view_path_engines = [MyAwesome::Engine]
-  # 
+  #
   # And even disable the automatic loading
-  # 
+  #
   #   Cell::Base.config.view_path_engines = false
-  # 
+  #
   # You can programatically append a Rails::Engine to Cell view path
-  # 
+  #
   #   Cells.setup do |config|
   #     config.append_engine_view_path!(MyEngine::Engine)
   #   end
   #
   module Engines
     extend VersionStrategy  # adds #registered_engines and #existent_directories_for.
-    
+
     # Appends all <tt>Rails::Engine</tt>s cell-views path to Cell::Base#view_paths
-    # 
+    #
     # All <tt>Rails::Engine</tt>s specified at <tt>config.view_path_engines</tt> will have its cell-views path appended to Cell::Base#view_paths
-    #  
+    #
     # Defaults <tt>config.view_path_engines</tt> to all loaded <tt>Rails::Engine</tt>s.
     #
     def self.append_engines_view_paths_for(config)
       return if config.view_path_engines == false
 
@@ -50,9 +50,11 @@
     # All existing directories specified at cell-views path will be appended do Cell::Base#view_paths
     #
     # Defaults <tt>paths['app/cell_views']</tt> to 'app/cells'
     #
     def self.append_engine_view_path!(engine)
+      return unless engine.is_a?(::Rails::Engine) # In Rails 4.1, this could be a Rails::Railtie, which doesn't make sense.
+
       engine.paths['app/cell_views'] || engine.paths.add('app/cell_views', :with => 'app/cells')
       Cell::Rails.append_view_path(existent_directories_for(engine.paths["app/cell_views"]))
     end
   end
 end