Question

我正在寻找有关如何在表单集上进行自定义验证的一些建议。

这就是我现在所拥有的，它返回以下错误，我不完全知道如何处理。

Exception Value: 
'MilestoneFormFormSet' object has no attribute 'save'

Forms.py

class BaseMilestoneFormSet(BaseFormSet):

    def clean(self):
        for form in self.forms:
            data = form.cleaned_data
            target_date = data["target_date"]
            project = data["project"]
            if target_date > project.target_date:
                raise forms.ValidationError("Target Date is outside of project target date")
            return data

MilestoneFormSetNew = modelformset_factory(Milestone, formset=BaseMilestoneFormSet, max_num=50, extra=1)

Views.py摘录

if request.method == 'POST':  # Loop through the submitted formsets check for erros and save the data.
        formsetNew = MilestoneFormSetNew(request.POST, prefix='new')
        if formsetNew.is_valid():
            formsetNew.save()
            return HttpResponseRedirect(reverse('pooflinger.project.views.detail', args=(project.id,)))

Answer 1

你的clean方法中有一个缩进错误 - 返回应该在for循环之外。

但是不要在formset中进行这种类型的验证。在表单集中的表单之间进行验证时，Formset验证非常有用。您正在比较每个表单中的值，因此将自定义ModelForm用于表单集更有意义。

class MilestoneForm(forms.ModelForm):

    def clean(self):
        data = self.cleaned_data
        target_date = data["target_date"]
        project = data["project"]
        if target_date > project.target_date:
            raise forms.ValidationError("Target Date is outside of project target date")
        return data

MilestoneFormSetNew = modelformset_factory(Milestone, form=MilestoneForm, max_num=50, extra=1)

Django对formset的自定义验证

1 个答案: