#28897: FieldError when performing custom action in Admin Interface IF data is
sorted by an annotated field
-------------------------------------+-------------------------------------
Reporter: coltonbh | Owner: nobody
Type: Bug | Status: new
Component: | Version: 2.0
contrib.admin | Keywords: Admin Interface,
Severity: Normal | Custom Action, Annotated Field,
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
A FieldError results if I try to perform a custom a custom action on data
in the admin interface IF that data is sorted by an annotated field. The
action is obviously not acting on an annotated field as those fields do
not exist in the database, but raises a FieldError saying it 'Cannot
resolve keyword 'field_that_data_is_currently_sorted_by' into field.' and
then lists the choices for fields (all of which are the raw model fields,
not the annotated fields in the custom queryset).
My admin model:
{{{
@admin.register(Position)
class PositionAdmin(admin.ModelAdmin):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
def get_queryset(self, request):
qs = super(PositionAdmin,
self).get_queryset(request).prefetch_related(
'orders').select_related(
'portfolio', 'current_position').select_related(
'current_position').annotate(
Count('orders', distinct=True),
Count('short_requests'),
total_position_value=ExpressionWrapper(
F('price') * F('quantity'),
output_field=IntegerField()),
diff_shares=Coalesce(
F('quantity')
- F('current_position__quantity'),
F('quantity')),
diff_value=ExpressionWrapper(
F('diff_shares') * F('price'),
output_field=IntegerField()),
orders_with_errors=Count(
Case(When(~Q(orders__error=''), then=1))),
non_accepted_orders=Count(
Case(When(Q(orders__status=''), then=1))),
order_today=Count(
Case(When(
orders__created_at__gte=_brokerage_today_start(),
then=1))))
return qs
# Custom Action
def approve_position_for_trading(self, request, queryset):
try:
num_pos_approved = queryset.update(approved=True)
except FieldError:
self.message_user(
request, "You cannot perform actions when you have sorted
by "
"this column. Please remove your column sortings and then
try "
"your action again.", level=messages.ERROR)
else:
if num_pos_approved == 1:
message_bit = "1 position was was"
else:
message_bit = "%s positions were" % num_pos_approved
self.message_user(
request, "%s successfully approved for trading." %
message_bit)
}}}
I had to write code to handle the error so that the user will know how to
proceed. However, this seems like bad behavior. Django can successfully
perform that action (changing the 'Approved' field to 'True') on the data
if it is sorted by any core model field, or if sorted by no field at all.
However, if the data is sorted by a field resulting from the annotation of
my queryset, then I get the FieldError when I try to perform the action.
This seems like a bug.
--
Ticket URL: <https://code.djangoproject.com/ticket/28897>
Django <https://code.djangoproject.com/>
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