EM: store in each component a reference to the list of the other

EditorialModel/components.py

     # @param id_or_name int|str: name or id of the object
     # @throw TypeError if id_or_name is not an integer nor a string
     # @throw NotImplementedError if called with EmComponent
-    def __init__(self, data):
+    def __init__(self, data, components):
         if type(self) == EmComponent:
             raise NotImplementedError('Abstract class')
 
         # @warning \ref _fields instance property is not the same than EmComponent::_fields class property. In the instance property the EditorialModel::fieldtypes::EmFieldType are instanciated to be able to handle datas
         # @see EmComponent::_fields EditorialModel::fieldtypes::EmFieldType
         self._fields = OrderedDict([(name, ftype()) for (name, ftype) in (EmComponent._fields + self.__class__._fields)])
+        self.components = components
 
         for name, value in data.items():
             if name in self._fields:

EditorialModel/model.py

             if cls:
                 component['uid'] = uid
                 # create a dict for the component and one indexed by uids, store instanciated component in it
-                self.components[component['component']][uid] = self.components['uids'][uid] = cls(component)
+                self.components[component['component']][uid] = self.components['uids'][uid] = cls(component, self.components)
         # TODO : check integrity
 
     ## Saves data using the current backend