python - 如何更改 CharField 选择列表行为

Question

正如您在下面看到的，我有带有 CharField 的模型。用户可以选择 ROLE_CHOICE 中的值之一。

问题:如何让某些值不可用但您仍然可以在选择中看到它们。

目前，我已经尝试了以下代码，但它使一些值不可见，这不是我想要的(我希望它们被禁用，而不是不可见)。

模型.py:

ROLE_CHOICES = (
        ('manager', 'Manager'),
        ('developer', 'Developer'),
        ('business_analyst', 'Business analyst'),
        ('system_analysts', 'System analysts'),
)


class Membership (models.Model):
    ***OTHER FIELDS***
    role = models.CharField(max_length=20, choices=ROLE_CHOICES,)

表单.py:

class MembershipForm(forms.ModelForm):
    class Meta:
        model = Membership
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        super(MembershipForm, self).__init__(*args, **kwargs)
        self.fields['role'].choices = tuple(choice for choice in ROLE_CHOICES if choice[0] not in ['developer'])

Answer 1

编辑: 将 disabled 更改为内部列表中的位置 0! 表单.py

class MembershipForm(forms.ModelForm):
    class Meta:
        model = Membership
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        super(MembershipForm, self).__init__(*args, **kwargs)
        self.fields['role'].choices = tuple(choice if choice[0] not in ['developer'] else ({"label":choice[1],"disabled":True},choice[0]) for choice in ROLE_CHOICES )

这里，

tuple(choice if choice[0] not in ['developer'] else ({"label":choice[1],"disabled":True},choice[0]) for choice in ROLE_CHOICES )

会给予

(('manager', 'Manager'), ( {'disabled': True, 'label': 'developer'}, Developer), ('business_analyst', 'Business analyst'), ('system_analysts', 'System analysts'))

即所有需要禁用的字段，都需要添加label和disabled属性!

这应该可以解决问题!

希望对您有所帮助!