categories.models.CategoryRelationManager
CategoryRelationManager#
- class categories.models.CategoryRelationManager(*args, **kwargs)[source]#
Custom access functions for category relations.
Methods
aggregate(*args, **kwargs)Return a dictionary containing the calculations (aggregation) over the current queryset.
alias(*args, **kwargs)Return a query set with added aliases for extra data or aggregations.
all()annotate(*args, **kwargs)Return a query set in which the returned objects have been annotated with extra data or aggregations.
bulk_create(*args, **kwargs)Insert each of the instances into the database.
bulk_update(*args, **kwargs)Update the given fields in each of the given objects in the database.
check(**kwargs)complex_filter(*args, **kwargs)Return a new QuerySet instance with filter_obj added to the filters.
contribute_to_class(cls, name)count(*args, **kwargs)Perform a SELECT COUNT() and return the number of records as an integer.
create(*args, **kwargs)Create a new object with the given kwargs, saving it to the database and returning the created object.
dates(*args, **kwargs)Return a list of date objects representing all available dates for the given field_name, scoped to 'kind'.
datetimes(*args, **kwargs)Return a list of datetime objects representing all available datetimes for the given field_name, scoped to 'kind'.
db_manager([using, hints])deconstruct()Return a 5-tuple of the form (as_manager (True), manager_class, queryset_class, args, kwargs).
defer(*args, **kwargs)Defer the loading of data for certain fields until they are accessed.
difference(*args, **kwargs)distinct(*args, **kwargs)Return a new QuerySet instance that will select only distinct results.
earliest(*args, **kwargs)exclude(*args, **kwargs)Return a new QuerySet instance with NOT (args) ANDed to the existing set.
exists(*args, **kwargs)explain(*args, **kwargs)extra(*args, **kwargs)Add extra SQL fragments to the query.
filter(*args, **kwargs)Return a new QuerySet instance with the args ANDed to the existing set.
first(*args, **kwargs)Return the first object of a query or None if no match is found.
from_queryset(queryset_class[, class_name])get(*args, **kwargs)Perform the query and return a single object matching the given keyword arguments.
get_content_type(content_type)Get all the items of the given content type related to this item.
get_or_create(*args, **kwargs)Look up an object with the given kwargs, creating one if necessary.
get_queryset()Return a new QuerySet object.
get_relation_type(relation_type)Get all the items of the given relationship type related to this item.
in_bulk(*args, **kwargs)Return a dictionary mapping each of the given IDs to the object with that ID.
intersection(*args, **kwargs)iterator(*args, **kwargs)An iterator over the results from applying this QuerySet to the database.
last(*args, **kwargs)Return the last object of a query or None if no match is found.
latest(*args, **kwargs)none(*args, **kwargs)Return an empty QuerySet.
only(*args, **kwargs)Essentially, the opposite of defer().
order_by(*args, **kwargs)Return a new QuerySet instance with the ordering changed.
prefetch_related(*args, **kwargs)Return a new QuerySet instance that will prefetch the specified Many-To-One and Many-To-Many related objects when the QuerySet is evaluated.
raw(*args, **kwargs)reverse(*args, **kwargs)Reverse the ordering of the QuerySet.
select_for_update(*args, **kwargs)Return a new QuerySet instance that will select objects with a FOR UPDATE lock.
select_related(*args, **kwargs)Return a new QuerySet instance that will select related objects.
union(*args, **kwargs)update(*args, **kwargs)Update all elements in the current QuerySet, setting all the given fields to the appropriate values.
update_or_create(*args, **kwargs)Look up an object with the given kwargs, updating one with defaults if it exists, otherwise create a new one.
using(*args, **kwargs)Select which database this QuerySet should execute against.
values(*args, **kwargs)values_list(*args, **kwargs)Attributes
auto_createdcreation_counterdbuse_in_migrationsIf set to True the manager will be serialized into migrations and will