2023-05-18 13:22:31 -07:00
|
|
|
from tree_queries.query import TreeManager as TreeManager_
|
|
|
|
from tree_queries.query import TreeQuerySet as TreeQuerySet_
|
|
|
|
|
|
|
|
from django.db.models import Manager
|
|
|
|
from .querysets import RestrictedQuerySet
|
|
|
|
|
|
|
|
__all__ = (
|
|
|
|
'TreeManager',
|
|
|
|
'TreeQuerySet',
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
class TreeQuerySet(TreeQuerySet_, RestrictedQuerySet):
|
|
|
|
"""
|
|
|
|
Mate django-tree-queries TreeQuerySet with our RestrictedQuerySet for permissions enforcement.
|
|
|
|
"""
|
|
|
|
pass
|
|
|
|
|
|
|
|
|
|
|
|
class TreeManager(Manager.from_queryset(TreeQuerySet), TreeManager_):
|
|
|
|
"""
|
|
|
|
Extend django-tree-queries TreeManager to incorporate RestrictedQuerySet().
|
|
|
|
"""
|
|
|
|
|
|
|
|
_with_tree_fields = True
|
2023-05-24 11:13:43 -07:00
|
|
|
|
|
|
|
def add_related_count(
|
|
|
|
self,
|
|
|
|
queryset,
|
|
|
|
rel_model,
|
|
|
|
rel_field,
|
|
|
|
count_attr,
|
|
|
|
cumulative=False,
|
|
|
|
extra_filters={},
|
|
|
|
):
|
|
|
|
"""
|
|
|
|
Adds a related item count to a given ``QuerySet`` using its
|
|
|
|
``extra`` method, for a ``Model`` class which has a relation to
|
|
|
|
this ``Manager``'s ``Model`` class.
|
|
|
|
|
|
|
|
Arguments:
|
|
|
|
|
|
|
|
``rel_model``
|
|
|
|
A ``Model`` class which has a relation to this `Manager``'s
|
|
|
|
``Model`` class.
|
|
|
|
|
|
|
|
``rel_field``
|
|
|
|
The name of the field in ``rel_model`` which holds the
|
|
|
|
relation.
|
|
|
|
|
|
|
|
``count_attr``
|
|
|
|
The name of an attribute which should be added to each item in
|
|
|
|
this ``QuerySet``, containing a count of how many instances
|
|
|
|
of ``rel_model`` are related to it through ``rel_field``.
|
|
|
|
|
|
|
|
``cumulative``
|
|
|
|
If ``True``, the count will be for each item and all of its
|
|
|
|
descendants, otherwise it will be for each item itself.
|
|
|
|
|
|
|
|
``extra_filters``
|
|
|
|
Dict with aditional parameters filtering the related queryset.
|
|
|
|
"""
|
|
|
|
return queryset
|