如何在Django中使用内联表单集删除模型对象

from django.forms import inlineformset_factory
from .models import Parent, Child

ChildInlineFormSet = inlineformset_factory(Parent, Child)

from django import forms
from .models import Parent

class ParentForm(forms.ModelForm):
    class Meta:
        model = Parent
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        instance = kwargs.get('instance')
        self.child_formset = ChildInlineFormSet(instance=instance, data=self.data)

    def is_valid(self):
        return super().is_valid() and self.child_formset.is_valid()

    def save(self, commit=True):
        parent = super().save(commit=commit)
        self.child_formset.instance = parent
        self.child_formset.save()
        return parent

from django.shortcuts import render, get_object_or_404, redirect
from .forms import ParentForm

def delete_model(request, parent_id):
    parent = get_object_or_404(Parent, pk=parent_id)
    if request.method == 'POST':
        form = ParentForm(request.POST, instance=parent)
        if form.is_valid():
            formset = form.child_formset
            for obj in formset.deleted_objects:
                obj.delete()
            form.save()
            return redirect('parent_detail', parent_id=parent_id)
    else:
        form = ParentForm(instance=parent)
    return render(request, 'delete_model.html', {'form': form})

<form method="POST">
    {% csrf_token %}
    {{ form.as_p }}
    {{ form.child_formset.as_table }}
    <input type="submit" value="Save">
</form>