如何在Django modelform中隐藏字段？ [英] How to hide a field in django modelform?

问题描述

例如：

class TestModel(models.Model):
    ref1 = models.ForeignKey(RefModel)
    text1 = models.TextField()

class TestModelForm(ModelForm):
    class Meta:
        model = TestModel
        fields = ('text1')

我只允许用户输入 text1 字段，但是当我重新定义时我的视图的 post方法，我还想设置 ref1 值，该怎么办？

I only allow the user to input text1 field, but when I redefine the post method of my view, I also want to set the ref1 value, how should I do that?

我希望我可以让TestModelForm具有ref1字段，但不要让用户修改它，然后我可以在post方法中修改request.POSt的值，并将其传递给TestModelForm，这有可能吗？

I wish I can let TestModelForm has the ref1 field but don't let user modify it, then I can modify the value of request.POSt in post method, and pass it to TestModelForm, is that possible?

推荐答案

您可以将 HiddenInput 用作 ref1 小部件：

class TestModelForm(ModelForm):
    class Meta:
        model = TestModel
        widgets = {
            'ref1': forms.HiddenInput(),
        }

另一个选择是使用保存表单commit 参数等于 False 。这样，您可以只在表单中包含可见字段，然后使用所需数据更新模型实例：

Another option is saving form with commit argument equal False. This way you can include only visible fields in form and then update model instance with needed data:

def some_view(request):
    # ...
    if request.method == 'POST':
        form = TestModelForm(request.POST)
        if form.is_valid():
            instance = form.save(commit=False)
            ref = get_ref_according_to_url()
            instance.ref1 = ref
            instance.save()
            # ...

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