表单集上的 Django 自定义验证

发布于 2024-09-30 00:37:24 字数 1093 浏览 3 评论 0原文

我正在寻找一些有关如何对表单集进行自定义验证的建议。

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,)))

原文

I am looking for some advice on how to do custom validation on formsets.

This is what I have right now and it returns the following error that I do not entirely know how to deal with.

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 excerpt

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,)))

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岛歌少女 2024-10-07 00:37:24

你的 clean 方法中有一个缩进错误 - 返回应该在 for 循环之外。

但不要在表单集中进行这种类型的验证。当您在表单集中跨表单进行验证时，表单集验证非常有用。您正在比较每个表单中的值，因此对表单集使用自定义 ModelForm 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)

You have an indentation error in your clean method - the return should be outside the for loop.

But don't do this type of validation in the formset. Formset validation is useful when you are validating across forms in the formset. You are comparing values within each form, so it makes more sense to use a custom ModelForm for the formset.

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)

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