如何更改CharField选择列表行为

时间:2017-03-12 04:43:43

标签: python django python-3.x django-forms django-1.9

正如您在下面看到的,我有模型与CharField 。用户可以在 ROLE_CHOICE 中选择一个值。

问题:如何使某些值不可用,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)。

model.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,)

forms.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'])

enter image description here

1 个答案:

答案 0 :(得分:1)

编辑: 将禁用更改为内部列表中的位置0! forms.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 )

下面,

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

将给出

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

也就是说,对于需要禁用的所有字段,您需要添加标签和禁用属性!

这应该可以做到!

希望它有所帮助!