def __init__(self, *args, **kwargs):
super(PagePermissionInlineAdminForm, self).__init__(*args, **kwargs)
user = get_current_user() # current user from threadlocals
sub_users = get_subordinate_users(user)
limit_choices = True
use_raw_id = False
# Unfortunately, if there are > 500 users in the system, non-superusers
# won't see any benefit here because if we ask Django to put all the
# user PKs in limit_choices_to in the query string of the popup we're
# in danger of causing 414 errors so we fall back to the normal input
# widget.
if get_cms_setting('RAW_ID_USERS'):
if sub_users.count() < 500:
# If there aren't too many users, proceed as normal and use a
# raw id field with limit_choices_to
limit_choices = True
use_raw_id = True
elif get_user_permission_level(user) == 0:
# If there are enough choices to possibly cause a 414 request
# URI too large error, we only proceed with the raw id field if
# the user is a superuser & thus can legitimately circumvent
# the limit_choices_to condition.
limit_choices = False
use_raw_id = True
# We don't use the fancy custom widget if the admin form wants to use a
# raw id field for the user
if use_raw_id:
from django.contrib.admin.widgets import ForeignKeyRawIdWidget
# This check will be False if the number of users in the system
# is less than the threshold set by the RAW_ID_USERS setting.
if isinstance(self.fields['user'].widget, ForeignKeyRawIdWidget):
# We can't set a queryset on a raw id lookup, but we can use
# the fact that it respects the limit_choices_to parameter.
if limit_choices:
self.fields['user'].widget.rel.limit_choices_to = dict(
id__in=list(sub_users.values_list('pk', flat=True))
)
else:
self.fields['user'].widget = UserSelectAdminWidget()
self.fields['user'].queryset = sub_users
self.fields['user'].widget.user = user # assign current user
self.fields['group'].queryset = get_subordinate_groups(user)
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