X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/1422f0d2c8325b2c4d6781bd3c7b21a3d5873b90..92aff1148db7b03f585dbe204abda452a402c20c:/models/base.py diff --git a/models/base.py b/models/base.py index 20693b7..5f8fb03 100644 --- a/models/base.py +++ b/models/base.py @@ -45,6 +45,9 @@ def register_value_model(model): value_content_type_limiter.register_class(model) +register_value_model(Tag) + + def unregister_value_model(model): value_content_type_limiter.unregister_class(model) @@ -140,41 +143,48 @@ class ManyToManyValue(AttributeValue): 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) @@ -184,7 +194,7 @@ class ManyToManyValue(AttributeValue): 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() } @@ -198,7 +208,9 @@ class ManyToManyValue(AttributeValue): 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 @@ -207,15 +219,15 @@ class ManyToManyValue(AttributeValue): 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) @@ -303,11 +315,6 @@ class TreeManager(models.Manager): # 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: @@ -339,12 +346,6 @@ class TreeManager(models.Manager): 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 @@ -365,7 +366,7 @@ class TreeManager(models.Manager): 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) @@ -378,7 +379,7 @@ class TreeManager(models.Manager): # 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 @@ -386,13 +387,13 @@ class TreeManager(models.Manager): 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)) @@ -416,12 +417,12 @@ class TreeModel(MPTTModel): 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):