#8851: Add a default option to list_filter in the admin interface
-------------------------------------+-------------------------------------
Reporter: Riskable | Owner: Harro
<riskable@…> |
Type: New feature | Status: new
Component: contrib.admin | Version: master
Severity: Normal | Resolution:
Keywords: admin, list_filter, | Triage Stage: Accepted
default |
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Comment (by Aymeric Augustin):
Furthermore, while `SimpleListFilter` is a public API, `FieldListFilter`
isn't. The docs note:
> The `FieldListFilter` API is considered internal and might be changed.
There's no way to make a good list filter for handling soft-deletes with
`SimpleListFilter` because it defaults to showing everything, which is the
main behavior that needs changing.
Here's how I did it with `FieldListFilter`:
{{{
class DeactivableListFilter(admin.ListFilter):
title = _("active")
parameter_name = 'active'
def __init__(self, request, params, model, model_admin):
super().__init__(request, params, model, model_admin)
if self.parameter_name in params:
value = params.pop(self.parameter_name)
self.used_parameters[self.parameter_name] = value
def show_all(self):
return self.used_parameters.get(self.parameter_name) == '__all__'
def has_output(self):
return True
def choices(self, changelist):
return [
{
'selected': self.show_all(),
'query_string':
changelist.get_query_string({self.parameter_name: '__all__'}),
'display': "Tout",
},
{
'selected': not self.show_all(),
'query_string':
changelist.get_query_string(remove=[self.parameter_name]),
'display': "Actif",
},
]
def queryset(self, request, queryset):
if not self.show_all():
return queryset.filter(active=True)
def expected_parameters(self):
return [self.parameter_name]
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/8851#comment:44>
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