mongoid fields are not shared by 2 instances of a same class but with different custom fields

app/views/admin/contents/_form.html.haml

@@ -1,7 +1,5 @@
 - highlighted_field_name = @content.content_type.highlighted_field_name
 
-- puts "current custom fields = #{@content.custom_fields.inspect}"
-
 = f.inputs :name => :other_fields do
   - @content.custom_fields.each do |field|
     - required = highlighted_field_name == field._name

doc/TODO

@@ -1,11 +1,8 @@
-BOARD:
-  - contents sub menu => BUG
+BOARD:  
+- liquid rendering engine
 
 BACKLOG:
-- liquid rendering engine
 - theme assets
-- assets collection
-- custom models
 - asset collections: custom resizing if image
 
 - devise messages in French
@@ -18,6 +15,7 @@ BUGS:
 - theme assets: disable version if not image
 - assets uploader: remove old files if new one
 
+
 DONE:
 x admin layout
 x logout button
@@ -79,4 +77,5 @@ x content types / models (CRUD)
   x require a custom field at least
   x pre-select the first custom field as the highlighted one
 x contents (CRUD)
-  x sort contents
+  x sort contents
+x contents sub menu => BUG

vendor/plugins/custom_fields/lib/custom_fields/custom_field.rb

@@ -34,8 +34,12 @@ module CustomFields
     def apply(object, association_name)
       return unless self.valid?
       
-      object.class.send(:set_field, self._name, { :type => self.field_type })
+      # trick mongoid
+      object.class_eval { def meta; (class << self; self; end); end }
+      object.meta.fields = object.fields.clone 
+      object.meta.send(:define_method, :fields) { self.meta.fields }
       
+      object.meta.field self._name, :type => self.field_type
       object.class_eval <<-EOF
         alias :#{self.safe_alias} :#{self._name}
         alias :#{self.safe_alias}= :#{self._name}=

vendor/plugins/custom_fields/lib/custom_fields/extensions/mongoid/document.rb

@@ -5,16 +5,18 @@ module Mongoid #:nodoc:
       def parentize_with_custom_fields(object, association_name)
         parentize_without_custom_fields(object, association_name)
         
-        if self.custom_fields?(object, association_name)
-          puts "[parentize_with_custom_fields] association_name = #{association_name} / #{self.custom_fields_association_name(association_name)}"
-          self.class.send(:define_method, :custom_fields) do
-            fields = object.send(self.custom_fields_association_name(association_name))
-            fields.sort { |a, b| (a.position || 0) <=> (b.position || 0) }
-          end
-          
+        if self.custom_fields?(object, association_name)          
+          # puts "[parentize_with_custom_fields] association_name = #{association_name} / #{self.custom_fields_association_name(association_name)}"          
           object.send(self.custom_fields_association_name(association_name)).each do |field|
             field.apply(self, association_name)
           end
+          
+          self.instance_eval <<-EOV
+            def custom_fields
+              fields = self._parent.send(:#{self.custom_fields_association_name(association_name)})
+              fields.sort { |a, b| (a.position || 0) <=> (b.position || 0) }
+            end
+          EOV
         end
       end