How to get the current model instance from inlineadmin in Django
django, django-admin, python
Solution
If the `person` cannot be easily got from `request`, you may need to manually pass it by overriding `ModelAdmin.get_form()` or `InlineModelAdmin.get_formset()`:
from functools import partial
class MyModelAdmin(admin.ModelAdmin):
def get_form(self, request, obj=None, **kwargs):
kwargs['formfield_callback'] = partial(self.formfield_for_dbfield, request=request, obj=obj)
return super(MyModelAdmin, self).get_form(request, obj, **kwargs)
def formfield_for_dbfield(self, db_field, **kwargs):
person = kwargs.pop('obj', None)
formfield = super(MyModelAdmin, self).formfield_for_dbfield(db_field, **kwargs)
if db_field.name == "car" and person:
formfield.queryset = Cars.objects.filter(owner=person)
return formfield
# or its inline
class MyInlineModelAdmin(admin.StackedInline):
def get_formset(self, request, obj=None, **kwargs):
kwargs['formfield_callback'] = partial(self.formfield_for_dbfield, request=request, obj=obj)
return super(MyInlineModelAdmin, self).get_formset(request, obj, **kwargs)
def formfield_for_dbfield(self, db_field, **kwargs):
person = kwargs.pop('obj', None)
formfield = super(MyInlineModelAdmin, self).formfield_for_dbfield(db_field, **kwargs)
if db_field.name == "car" and person:
formfield.queryset = Cars.objects.filter(owner=person)
return formfield
Or
class MyModelAdmin(admin.ModelAdmin):
def get_form(self, request, obj=None, **kwargs):
kwargs['formfield_callback'] = partial(self.formfield_for_dbfield, request=request, obj=obj)
return super(MyModelAdmin, self).get_form(request, obj, **kwargs)
def formfield_for_dbfield(self, db_field, **kwargs):
if db_field.name != "car":
kwargs.pop('obj', None)
return super(MyModelAdmin, self).formfield_for_dbfield(db_field, **kwargs)
def formfield_for_manytomany(self, db_field, request=None, **kwargs):
person = kwargs.pop('obj', None)
if db_field.name == "car" and person:
kwargs['queryset'] = Cars.objects.filter(owner=person)
return super(MyModelAdmin, self).formfield_for_manytomany(db_field, request, **kwargs)
Problem
I am using the `formfield_for_manytomany` given in django documentation. But inside that function I need to get the current parent object being edited. ``` def formfield_for_manytomany(self, db_field, request, **kwargs): if db_field.name == "car": kwargs["queryset"] = Cars.objects.filter(owner=person) return super(myModel, self).formfield_for_manytomany(db_field, request, **kwargs) ``` How can I get the person being edited?