Django在ModelForm小部件中替换选项值 [英] Django Replace choices value in ModelForm Widget

问题描述

我有一个模型，可以让我在一些预定义的值之间进行选择。

i have a model that let me to choice between some predefined values.

in models.py

class Customer(models.Model):
    GENDER = ( ('m' , 'Male') , ('f' , 'Female') )
    PersonGender = models.CharField(max_length=20,choices=GENDER) 

并且我有一个ModelForm来处理我的表单，没关系，但是我出于某种原因想要定义另一个ModelForm来更改 GENDER值。

and i have a ModelForm to handle my form , it's ok , but i want to define another ModelForm To Change "GENDER" values for some reasons.

我在Forms.py中定义了另一个ModelForm

i define another ModelForm in forms.py

GENDER = (('male' , 'Male' ), ('female' , 'Female') )
class MySecondaryForm(forms.ModelForm):
        class Meta:
            model = Customer
            fields = '__all__'
            widgets = {
                'PersonGender': forms.Select(choices=GENDER)
            }

使用此配置下拉菜单不会更改为新值。

with this configuration Drop-down menu not changes to new values.

我可以使用以下配置修复它：

i can fix it with below configuration:

GENDER = (('male' , 'Male' ), ('female' , 'Female') )
class MySecondaryForm(forms.ModelForm):
    PersonGender = forms.ChoiceField(choices=GENDER)
    class Meta:
        model = Customer
        fields = '__all__'

下拉值更改为new，但我想知道如何在Meta内部进行更改在小工具中上课？

with above configuration Drop-down values changes to my new , but i want to know how can i change it inside the Meta Class in "widgets" ?

推荐答案

您不应在form.py和model.py中定义GENDER。只需在models.py中定义它即可。

You should not define GENDER in forms.py and model.py. Just define it in models.py.

class MySecondaryForm(forms.ModelForm):
    class Meta:
        model = Customer

足以满足您的表单要求。您可以在python中做的最糟糕的事情是使用不需要的东西。

is sufficent for your form. Worst thing you can do in python is using things that you dont need.

关于您的评论，也许这是一个选择，如此处所述：

Regarding to your comment maybe this would be an option as described here :

http://www.ilian.io/django-forms-choicefield-with-dynamic-values/

本文引用的代码

def get_my_choices():
    # you place some logic here
    return choices_list

class MyForm(forms.Form):
    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)
        self.fields['my_choice_field'] = forms.ChoiceField(
            choices=get_my_choices() )

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