value_content_type_limiter.register_class(model)
+register_value_model(Tag)
+
+
def unregister_value_model(model):
value_content_type_limiter.unregister_class(model)
content_type = models.ForeignKey(ContentType, limit_choices_to=value_content_type_limiter, verbose_name='Value type', null=True, blank=True)
values = models.ManyToManyField(ForeignKeyValue, blank=True, null=True)
- def get_object_id_list(self):
- if not self.values.count():
- return []
- else:
- return self.values.values_list('object_id', flat=True)
-
- def get_value(self):
- if self.content_type is None:
- return None
-
- return self.content_type.model_class()._default_manager.filter(id__in=self.get_object_id_list())
+ def get_object_ids(self):
+ return self.values.values_list('object_id', flat=True)
+ object_ids = property(get_object_ids)
def set_value(self, value):
- # Value is probably a queryset - but allow any iterable.
+ # Value must be a queryset. Watch out for ModelMultipleChoiceField;
+ # it returns its value as a list if empty.
- # These lines shouldn't be necessary; however, if value is an EmptyQuerySet,
- # the code (specifically the object_id__in query) won't work without them. Unclear why...
- if not value:
- value = []
+ self.content_type = ContentType.objects.get_for_model(value.model)
# Before we can fiddle with the many-to-many to foreignkeyvalues, we need
# a pk.
if self.pk is None:
self.save()
- if isinstance(value, models.query.QuerySet):
- value = value.values_list('id', flat=True)
+ object_ids = value.values_list('id', flat=True)
- self.values.filter(~models.Q(object_id__in=value)).delete()
- current = self.get_object_id_list()
+ # These lines shouldn't be necessary; however, if object_ids is an EmptyQuerySet,
+ # the code (specifically the object_id__in query) won't work without them. Unclear why...
+ # TODO: is this still the case?
+ if not object_ids:
+ self.values.all().delete()
+ else:
+ self.values.exclude(object_id__in=object_ids, content_type=self.content_type).delete()
+
+ current_ids = self.object_ids
+
+ for object_id in object_ids:
+ if object_id in current_ids:
+ continue
+ self.values.create(content_type=self.content_type, object_id=object_id)
+
+ def get_value(self):
+ if self.content_type is None:
+ return None
- for v in value:
- if v in current:
- continue
- self.values.create(content_type=self.content_type, object_id=v)
+ # HACK to be safely explicit until http://code.djangoproject.com/ticket/15145 is resolved
+ object_ids = self.object_ids
+ manager = self.content_type.model_class()._default_manager
+ if not object_ids:
+ return manager.none()
+ return manager.filter(id__in=self.object_ids)
value = property(get_value, set_value)
if self.content_type:
kwargs = {
- 'initial': self.get_object_id_list(),
+ 'initial': self.object_ids,
'required': False,
'queryset': self.content_type.model_class()._default_manager.all()
}
self.values.clear()
self.content_type = ct
else:
- value = kwargs.get('value', self.content_type.model_class()._default_manager.none())
+ value = kwargs.get('value', None)
+ if not value:
+ value = self.content_type.model_class()._default_manager.none()
self.set_value(value)
construct_instance.alters_data = True
class Attribute(models.Model):
- entity_content_type = models.ForeignKey(ContentType, related_name='attribute_entity_set', verbose_name='Entity type')
- entity_object_id = models.PositiveIntegerField(verbose_name='Entity ID')
+ entity_content_type = models.ForeignKey(ContentType, related_name='attribute_entity_set', verbose_name='Entity type', db_index=True)
+ entity_object_id = models.PositiveIntegerField(verbose_name='Entity ID', db_index=True)
entity = generic.GenericForeignKey('entity_content_type', 'entity_object_id')
- value_content_type = models.ForeignKey(ContentType, related_name='attribute_value_set', limit_choices_to=attribute_value_limiter, verbose_name='Value type', null=True, blank=True)
- value_object_id = models.PositiveIntegerField(verbose_name='Value ID', null=True, blank=True)
+ value_content_type = models.ForeignKey(ContentType, related_name='attribute_value_set', limit_choices_to=attribute_value_limiter, verbose_name='Value type', null=True, blank=True, db_index=True)
+ value_object_id = models.PositiveIntegerField(verbose_name='Value ID', null=True, blank=True, db_index=True)
value = generic.GenericForeignKey('value_content_type', 'value_object_id')
- key = models.CharField(max_length=255, validators=[RegexValidator("\w+")], help_text="Must contain one or more alphanumeric characters or underscores.")
+ key = models.CharField(max_length=255, validators=[RegexValidator("\w+")], help_text="Must contain one or more alphanumeric characters or underscores.", db_index=True)
def __unicode__(self):
return u'"%s": %s' % (self.key, self.value)
# tree structure won't be that deep.
segments = path.split(pathsep)
- # Check for a trailing pathsep so we can restore it later.
- trailing_pathsep = False
- if segments[-1] == '':
- trailing_pathsep = True
-
# Clean out blank segments. Handles multiple consecutive pathseps.
while True:
try:
return kwargs
- def build_path(segments):
- path = pathsep.join(segments)
- if trailing_pathsep and segments and segments[-1] != '':
- path += pathsep
- return path
-
def find_obj(segments, depth, deepest_found=None):
if deepest_found is None:
deepest_level = 0
if deepest_level == depth:
# This should happen if nothing is found with any part of the given path.
if root is not None and deepest_found is None:
- return root, build_path(segments)
+ return root, pathsep.join(segments)
raise
return find_obj(segments, depth, deepest_found)
# Could there be a deeper one?
if obj.is_leaf_node():
- return obj, build_path(segments[deepest_level:]) or None
+ return obj, pathsep.join(segments[deepest_level:]) or None
depth += (len(segments) - depth)/2 or len(segments) - depth
depth = deepest_level + obj.get_descendant_count()
if deepest_level == depth:
- return obj, build_path(segments[deepest_level:]) or None
+ return obj, pathsep.join(segments[deepest_level:]) or None
try:
return find_obj(segments, depth, obj)
except self.model.DoesNotExist:
# Then this was the deepest.
- return obj, build_path(segments[deepest_level:])
+ return obj, pathsep.join(segments[deepest_level:])
if absolute_result:
return self.get(**make_query_kwargs(segments, root))
if root is not None and not self.is_descendant_of(root):
raise AncestorDoesNotExist(root)
- qs = self.get_ancestors()
+ qs = self.get_ancestors(include_self=True)
if root is not None:
qs = qs.filter(**{'%s__gt' % self._mptt_meta.level_attr: root.get_level()})
- return pathsep.join([getattr(parent, field, '?') for parent in list(qs) + [self]])
+ return pathsep.join([getattr(parent, field, '?') for parent in qs])
path = property(get_path)
def __unicode__(self):
git.ithinksw.org / philo.git / blobdiff