Question

我想更新可以包含不同条目的formset。我将能够提供预填充正确数据的formset，但是我做错了，因为它没有更新但是创建了一个新实例..

我看到 inlineformset_factory 但是因为我将多个值传递给formset，所以我无法使用它..

如果有人有任何指针，我会非常感激！

views.py

    epis = Contact.objects.filter(episode=int(value))

    ContactSet = formset_factory(Contact1Form, extra=len(epis), max_num=len(epis))
    if request.method =='POST':
        formset = ContactSet(request.POST)
        if formset.is_valid():
            for form in formset.forms:
                age = form.cleaned_data['age']
                bcg = form.cleaned_data['bcg_scar']
                radio = form.cleaned_data['radiology']

                profile = form.save(commit=False)
                for i in epis:
                    profile.contact = i

                fields = {'age': age, 'bcg_scar': bcg, 'radiology': radio}

                for key, value in fields.items():
                    if value == u'':
                        setattr(profile, key, None)
                    else:
                        setattr(profile, key, value)

                profile.save()
        return render_to_response('success.html', {'location': location})
    else:
        dic = []
        for c in epis:
            aux = {}
            for f in c._meta.fields:
                if f.name not in ['contact_id', 'episode']:
                    aux[f.name] = getattr(c, f.name)
            dic.append(aux)

        formset = ContactSet(initial=dic)
    return render_to_response('form.html',
            {   'msg': msg,
                'location': location,
                'formset': formset,
                'word': word })

forms.py

  class ContactForm(forms.ModelForm):
        affinity = forms.ModelChoiceField(queryset=Affinity.objects.all(),
                  label=ugettext("Affinity"))
        age = forms.IntegerField(label=ugettext("Age when diagnosed"),
                  required=False)

        MAYBECHOICES = (
            ('', '---------'),
            (ugettext('Yes'), ugettext('Yes')),
            (ugettext('No'), ugettext('No')))

        bcg_scar = forms.ChoiceField(choices=MAYBECHOICES, label=ugettext(
                  "BCG scar"), required=False)
        radiology = forms.ModelChoiceField(queryset=Radiology.objects.all(),
                 label=ugettext("Radiology"),required=False)

    class Meta:
         model = Contact

任何指针都会有很大的帮助！

修改

来自凯瑟琳的一些建议

  formset = ContactSet(request.POST, queryset=epis)

给了我这个错误：

  __init__() got an unexpected keyword argument 'queryset'

我尝试更改

 from django.forms.models import modelformset_factory
 ContactSet = modelformset_factory(Contact1Form, extra=len(epis), max_num=len(epis))

出现了这个错误：

'ModelFormOptions' object has no attribute 'many_to_many'

然后看到要解决这个错误，我需要使用模型的名称。

ContactSet = modelformset_factory(Contact, extra=len(epis), max_num=len(epis))

我得到一个MultiValueDictKeyError

Answer 1

您忘了在formset中添加instance

 if request.method =='POST':
    formset = ContactSet(request.POST, queryset=epis)
    if formset.is_valid():

Answer 2

MyFormSet = modelformset_factory(ModelName, form=MyForm)
qs = ModelName.objects.filter(user=request.user)
formset = MyFormSet(queryset=qs)

django formset - 无法更新条目

2 个答案: