Genericized penfield's migrations to allow for variations in the PHILO_PERSON_MODULE...

[philo.git] / models / base.py

diff --git a/models/base.py b/models/base.py
index 5ca782a..5d09f37 100644 (file)
--- a/models/base.py
+++ b/models/base.py
@@ -46,6 +46,7 @@ def unregister_value_model(model):
 
 
 class AttributeValue(models.Model):
+       attribute = generic.GenericRelation('Attribute', content_type_field='value_content_type', object_id_field='value_object_id')
        def apply_data(self, data):
                raise NotImplementedError
        
@@ -103,6 +104,7 @@ class ForeignKeyValue(AttributeValue):
 
 
 class ManyToManyValue(AttributeValue):
+       # TODO: Change object_ids to object_pks.
        content_type = models.ForeignKey(ContentType, related_name='many_to_many_value_set', limit_choices_to=value_content_type_limiter, verbose_name='Value type', null=True, blank=True)
        object_ids = models.CommaSeparatedIntegerField(max_length=300, verbose_name='Value IDs', null=True, blank=True)
        
@@ -136,7 +138,12 @@ class ManyToManyValue(AttributeValue):
                return form_class(self.content_type.model_class()._default_manager.all(), **kwargs)
        
        def apply_data(self, cleaned_data):
-               self.value = cleaned_data.get('value', None)
+               if 'value' in cleaned_data and cleaned_data['value'] is not None:
+                       self.value = cleaned_data['value']
+               else:
+                       self.content_type = cleaned_data.get('content_type', None)
+                       # If there is no value set in the cleaned data, clear the stored value.
+                       self.object_ids = ""
        
        class Meta:
                app_label = 'philo'
@@ -153,29 +160,6 @@ class Attribute(models.Model):
        
        key = models.CharField(max_length=255)
        
-       def get_value_class(self, value):
-               if isinstance(value, models.query.QuerySet):
-                       return ManyToManyValue
-               elif isinstance(value, models.Model) or (value is None and self.value_content_type.model_class() is ForeignKeyValue):
-                       return ForeignKeyValue
-               else:
-                       return JSONValue
-       
-       def set_value(self, value):
-               # is this useful? The best way of doing it?
-               value_class = self.get_value_class(value)
-               
-               if self.value is None or value_class != self.value_content_type.model_class():
-                       if self.value is not None:
-                               self.value.delete()
-                       new_value = value_class()
-                       new_value.value = value
-                       new_value.save()
-                       self.value = new_value
-               else:
-                       self.value.value = value
-                       self.value.save()
-       
        def __unicode__(self):
                return u'"%s": %s' % (self.key, self.value)
        
@@ -191,11 +175,15 @@ class QuerySetMapper(object, DictMixin):
        
        def __getitem__(self, key):
                try:
-                       return self.queryset.get(key__exact=key).value
+                       value = self.queryset.get(key__exact=key).value
                except ObjectDoesNotExist:
                        if self.passthrough is not None:
                                return self.passthrough.__getitem__(key)
                        raise KeyError
+               else:
+                       if value is not None:
+                               return value.value
+                       return value
        
        def keys(self):
                keys = set(self.queryset.values_list('key', flat=True).distinct())
@@ -253,14 +241,15 @@ class Entity(models.Model):
                        self.attribute_set.filter(key__exact=key).delete()
                del self._removed_attribute_registry[:]
                
-               for key, value in self._added_attribute_registry.items():
+               for field, value in self._added_attribute_registry.items():
                        try:
-                               attribute = self.attribute_set.get(key__exact=key)
+                               attribute = self.attribute_set.get(key__exact=field.key)
                        except Attribute.DoesNotExist:
                                attribute = Attribute()
                                attribute.entity = self
-                               attribute.key = key
-                       attribute.set_value(value)
+                               attribute.key = field.key
+                       
+                       field.set_attribute_value(attribute, value)
                        attribute.save()
                self._added_attribute_registry.clear()