如何在Django中的表单中嵌套嵌入式表单集？ [英] How to have a nested inline formset within a form in Django?

问题描述

我希望这个问题还没有被问到，但是我想知道是否有可能为对象设置一个普通的基于类的表单，并在其中设置一个内联格式来编辑它的相关对象。

I hope this question has not been asked yet, but I want to know if it is possible to have a normal class-based form for an object and to have an inline formset inside it to edit its related objects.

例如，我有一个联系人模型


class Contact（models.Model）：

...



和通信模型


class Communication（models.Model）：

contact = models.ForeignKey（Contact）


For example, I have a Contact model
class Contact(models.Model):
...
And a Communication model
class Communication(models.Model):
contact = models.ForeignKey(Contact)

并且我想要一个嵌套在其中的联机表单来管理与之相关的通信。

and I want to have a form for Contact with a inline formset nested in it for managing communications related to it.

可以使用现有组件或者我有一个绝望的梦想？

Is it possible to do so with existing components or do I have a hopeless dream?

编辑：我知道管理面板是这样做的，但是如何在视图中进行工作？

EDIT : I know that the admin panel does it, but how do I make work in a view?

推荐答案

当然可以 - 你觉得管理员怎么看？

Of course it's possible - how do you think the admin does it?

查看内联表单文档。

评论后编辑当然，您需要实例化和呈现两者父表单和嵌套表单集。如下所示：

Edited after comment Of course, you need to instantiate and render both the parent form and the nested formset. Something like:

def edit_contact(request, contact_pk=None):
    if contact_pk:
        my_contact = Contact.objects.get(pk=contact_pk)
    else:
        my_contact = Contact()
    CommunicationFormSet = inlineformset_factory(Contact, Communication)
    if request.POST:
        contact_form = ContactForm(request.POST, instance=my_contact)
        communication_set = CommunicationFormSet(request.POST,
                                                 instance=my_contact)
        if contact_form.is_valid() and communication_set.is_valid():
            contact_form.save()
            communication_set.save()
    else:
        contact_form = ContactForm(instance=my_contact)
        communication_set = CommunicationFormSet(instance=my_contact)

    return render_to_response('my_template.html', 
                              {'form': contact_form, 'formset':communication_set})

，模板可以简单到：

<form action="" method="POST">
  {{ form.as_p }}
  {{ formset }}
</form>

尽管您可能想要更详细地介绍如何呈现。

although you'll probably want to be a bit more detailed in how you render it.

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