Question

@render_to('edit_operation.html')       
def edit_operation(request, pk):
    from forms import OpBaseForm, OperationForm
    from django.forms.models import inlineformset_factory

    op = Operation.objects.get(pk=pk)

    OpBaseFormSet = inlineformset_factory(Operation, OpBase, form=OpBaseForm, extra=5, )

    if request.method == "POST":
        form    = OperationForm(request.POST, instance=op)
        formset = OpBaseFormSet(request.POST, instance=op)

        if formset.is_valid() and form.is_valid():
            form.save()
            formset.save()   #error here

            return HttpResponseRedirect( op.get_absolute_url() )
    else:
        form    = OperationForm(instance=op)
        formset = OpBaseFormSet(instance=op)


    return {'operation': op, 'opform': form, 'formset': formset}

这看起来非常简单，但每当我尝试提交数据（甚至是未更改的数据）时，我都会收到此错误：

Environment:

Request Method: POST
Request URL: http://localhost:8000/edit/operation/1/
Django Version: 1.0.2 final
Python Version: 2.6.2
Installed Applications:
['main',
 'django_extensions',
 'django.contrib.comments',
 'django.contrib.admindocs',
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.gis',
 'django.contrib.humanize',
 'registration']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware')


Traceback:
File "/usr/lib/python2.6/dist-packages/django/core/handlers/base.py" in get_response
  86.                 response = callback(request, *callback_args, **callback_kwargs)
File "/usr/lib/python2.6/dist-packages/annoying/decorators.py" in wrapper
  55.             output = function(request, *args, **kwargs)
File "/home/chris/Websites/jobmap/main/views.py" in edit_operation
  68.           formset.save()
File "/usr/lib/python2.6/dist-packages/django/forms/models.py" in save
  389.         return self.save_existing_objects(commit) + self.save_new_objects(commit)
File "/usr/lib/python2.6/dist-packages/django/forms/models.py" in save_existing_objects
  403.             obj = existing_objects[form.cleaned_data[self._pk_field.name]]

Exception Type: KeyError at /edit/operation/1/
Exception Value: None

任何人都知道导致此错误的原因是什么？如果formset中有错误，那么formset.is_valid()做什么是'真'？任何人至少对如何调试这个有任何想法，以找到什么问题？单独使用时，两种表单都可以正常工作，我的模板中有{{formset.management_form}}。

Answer 1

只是一个快速的猜测...是你的OpBaseForm除了模型pk？或者，您是否错过了模板中的pk字段？换句话说，如果你自己布置字段，你仍然需要包含pk字段，即使它是隐藏的。

保存inlineformset_factory数据

1 个答案: