Django Admin不保存预先填充的内联字段,这些字段保留在初始状态

Question

我有一些自定义管理代码,它初始化一些内联子对象.

如果用户编辑其中一个内联子对象的默认值,则在保存父对象时会创建该子元素.

我假设Django正在检查值是否已从其initial值更改,并且仅在用户更改了值时才保存.

是这样的吗？

如果用户选择不更改默认值,如何强制Django Admin创建具有未更改的默认值的内联子对象？

class PrepopIpInlineFormSet(forms.models.BaseInlineFormSet):
    model = Ip

    def __init__(self, *args, **kwargs):
        super(PrepopIpInlineFormSet, self).__init__(*args, **kwargs)
        initial = # calculate a set of default Ip model initial values
        self.initial = initial


class PrepopIpInline(admin.options.InlineModelAdmin):
    template = "admin/linked.html"
    model = Ip
    formset = PrepopIpInlineFormSet
    fk_name = 'sim'
    admin_model_path = None
    show_url = True

    def __init__(self, *args):
        super(PrepopIpInline, self).__init__(*args)
        if self.admin_model_path is None:
            self.admin_model_path = self.model.__name__.lower()

    def get_formset(self, request, obj=None, **kwargs):
        formset = super(PrepopIpInline, self).get_formset(request, obj, **kwargs)
        formset.request = request
        return formset

    def get_extra(self, request, obj=None, **kwargs):
        if obj:
            return 0
        else:
            return ApnGgsn.objects.all().count()

Answer 1

来源:如何强行保存"空"/未更改的django admin内联？

from django.contrib import admin
from django.forms.models import BaseInlineFormSet, ModelForm

class AlwaysChangedModelForm(ModelForm):
    def has_changed(self):
        """ Should returns True if data differs from initial. 
        By always returning true even unchanged inlines will get validated and saved."""
        return True

class CheckerInline(admin.StackedInline):
    """ Base class for checker inlines """
    extra = 0
    form = AlwaysChangedModelForm