django：如何在模型形式中更改nullbooleanfield的值？ [英] django: how to change values for nullbooleanfield in a modelform?

问题描述

在文档中， nullbooleanfield 表示为作为< select> 如何将 select 的值更改为其他一些更有意义的文本，以及将其映射回我的 modelform 中的yes，no和未知值？

In the docs, the nullbooleanfield is represented as a <select> box with "Unknown", "Yes" and "No" choices. How can I change the values of select to some other more meaningful texts and map it back to the yes,no and unknown values in my modelform?

例如我有 yes_no_required = models.NullBooleanField（），我想有'是的，我承认这一点'，'否，我不喜欢这样'和'我现在不知道'映射为是，否，并且相应地需要。

For example I have yes_no_required = models.NullBooleanField() and I would like to have 'yes I acknowledge this', 'no, I do not like this' and 'I do not know now' mapping to yes, no and required accordingly.

推荐答案

我花了半个小时整理了一个演示，目的是向我自己证明这个方法：

I spent half an hour putting together a demo just to prove to myself this works:

CHOICES = (
    (None, "I do not know now"),
    (True, "Yes I acknowledge this"),
    (False, "No, I do not like this")
)

class Demo(models.Model):
    yes_no_required = models.NullBooleanField(choices = CHOICES)

class DemoForm(forms.ModelForm):
    class Meta:
        model = Demo

我查看了Django源代码。 一切都可以接受选择数组。显然，对于其中一些没有道理的事情，但这是有可能的。

I looked in the Django source code. Everything can accept a choices array. Obviously, for some of those that doesn't make sense, but it's possible.

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