如何在 Django 的表单中使用嵌套的内联表单集? [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，但我想知道是否有可能为一个对象创建一个普通的基于类的表单，并在其中包含一个内联表单集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

For example, I have a Contact model

class Contact(models.Model):
    ...

和一个通信模型

And a Communication model

class Communication(models.Model):
   contact = models.ForeignKey(Contact)

并且我想要一个联系人表单，其中嵌套了一个内联表单集，用于管理与其相关的通信.

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

是否可以使用现有组件来实现这一点，还是我有一个无望的梦想?

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

我知道管理面板会这样做，但我如何在视图中工作?

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

推荐答案

当然有可能 - 你认为管理员是怎么做的?

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

查看内联表单集文档.

评论后编辑 当然，您需要实例化和呈现父表单和嵌套表单集.类似的东西:

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})

模板可以很简单:

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

尽管您可能希望更详细地了解如何渲染它.

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

这篇关于如何在 Django 的表单中使用嵌套的内联表单集?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！