如果
person无法轻松获取
request，则可能需要通过覆盖
ModelAdmin.get_form()或手动传递它
InlineModelAdmin.get_formset()：
from functools import partialclass 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 inlineclass 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要么
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)
