使用ForeignKey保存Django ModelForm [英] Saving Django ModelForm with a ForeignKey

问题描述

这可能是一个相当简单的问题，但我似乎无法从Django文档中得出结论。我试图一次保存两个ModelForms，一个是另一个的ForeignKey。我不知道如何在视图中写入逻辑，以确保这些逻辑正确合并。

This is probably a fairly simple question, but I can't seem to figure it out from the Django Docs. I'm trying to save a two ModelForms at once with one being a ForeignKey of another. I'm not sure how to write the logic in the views to ensure these go together properly.

models.py

class Address(models.Model):
    address = models.CharField(max_length=100)
    city = models.CharField(max_length=50)
    zipcode = models.PositiveIntegerField()

class Store(models.Model):
    name = models.CharField(max_length=100)
    description = models.CharField(max_length=140, blank=True)
    address = models.ForeignKey(Address, null=True)

forms.py

class CreateStore1Form(forms.ModelForm):
    class Meta:
        model = Store
        exclude = ('address',)

class CreateStore2Form(forms.ModelForm):
    class Meta:
        model = Address

views.py

@login_required
def create(request):
    if request.method == "POST":
        form1 = CreateStore1Form(request.POST)
        form2 = CreateStore2Form(request.POST)
        if form1.is_valid() and form2.is_valid():
            store = form1.save(address)
            new_address = form2.save(commit=False)
            new_address.store = store
            mew_address.save()
    else:
        form1 = CreateStore1Form()
        form2 = CreateStore2Form()
    return render(request, 'create.html', locals())

任何帮助将不胜感激。谢谢！

Any help would be appreciated. Thanks!

推荐答案

Django提供

Django provides inline formsets for this use case:

在线表单/ modelforms /＃inline-formetsrel =nofollow noreferrer>内联表单 formets是一个小的抽象层，位于模型窗体之上。
这些简化了通过外部
键处理相关对象的情况。

Inline formsets is a small abstraction layer on top of model formsets. These simplify the case of working with related objects via a foreign key.

forms.py

forms.py

class AddressForm(forms.ModelForm):
    class Meta:
        model = Address

class StoreForm(forms.ModelForm):
    class Meta:
        model = Store
        exclude = ('address',)

views.py

from django.forms.models import inlineformset_factory

@login_required
def create(request):    
    AddressInlineFormSet = inlineformset_factory(Address, Store, form=AddressForm)

     if request.method == 'POST':
         storeForm = StoreForm(request.POST)

         if storeForm.is_valid():
             new_store = storeForm.save()
             addressInlineFormSet = AddressInlineFormSet(request.POST, request.FILES, instance=new_store)

             if addressInlineFormSet.is_valid():
                addressInlineFormSet.save()
                return HttpResponseRedirect(reverse('some_happy_customer_url'))

             else:
                classificationformset = ClassificationInlineFormSet(request.POST, request.FILES, instance=new_store)
     else:
          addressInlineFormSet = AddressInlineFormSet()
          storeForm = StoreForm()
     return render(request, 'create.html', locals())

请参阅这个问题。

这篇关于使用ForeignKey保存Django ModelForm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！