在Django中覆盖UserChangeForm

Question

由于我不需要编辑表单中的所有字段，因此我寻求一种从Userchangeform中排除某些字段的方法，并且发现覆盖表单是可行的

forms.py

 from django.contrib.auth.models import User
from django.contrib.auth.forms import UserChangeForm

class UserChangeForm(UserChangeForm):

    class Meta:
        model = User
        fields = ('email',)

问题是我需要在输入电子邮件后删除该消息

有什么想法吗？

Answer 1

在这种情况下，您甚至不需要使用UserChangeForm。请参阅该类的源代码：

class UserChangeForm(forms.ModelForm):
    password = ReadOnlyPasswordHashField(
        label=_("Password"),
        help_text=_(
            "Raw passwords are not stored, so there is no way to see this "
            "user's password, but you can change the password using "
            "<a href=\"{}\">this form</a>."
        ),
    )

    class Meta:
        model = User
        fields = '__all__'
        field_classes = {'username': UsernameField}

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        password = self.fields.get('password')
        if password:
            password.help_text = password.help_text.format('../password/')
        user_permissions = self.fields.get('user_permissions')
        if user_permissions:
            user_permissions.queryset = user_permissions.queryset.select_related('content_type')

    def clean_password(self):
        # Regardless of what the user provides, return the initial value.
        # This is done here, rather than on the field, because the
        # field does not have access to the initial value
        return self.initial["password"]

90％的额外代码与您不需要的密码有关，其中一些与权限和用户名有关。因此，对于您的需求，只需扩展ModelForm就可以了。

from django.contrib.auth.models import User
from django.forms import ModelForm

class UserChangeForm(ModelForm):

    class Meta:
        model = User
        fields = ('email',)