Validate UserChangeForm from admin site

[Ayush Bisht]

# admin.py

class CustomUserAdmin(UserAdmin):

    model = CustomUser

    add_form = CustomUserCreationForm

    fieldsets = (

        *UserAdmin.fieldsets, (

            'User type',{

                'fields' : (

                    'is_admin',

                    'is_doctor',

                    'is_nurse',

                    

                ),

                'description': "Select any one of them "

            }

        )

    )

# models.py

class CustomUser(AbstractUser):

    username = models.CharField(max_length=50, unique=True, blank=False, null=False)   

    is_doctor = models.BooleanField(default=False, blank=False, null=False)

    is_nurse = models.BooleanField(default=False, blank=False, null=False)        

    is_admin = models.BooleanField(default=False, blank=False, null=False)

    

# forms.py

class CustomUserCreationForm(forms.ModelForm):

    """

    A form that creates a user, with no privileges, from the given username and

    password.

    """

    error_messages = {

        'password_mismatch': _('The two password fields didn’t match.'),

    }

    password1 = forms.CharField(

        label=_("Password"),

        strip=False,

        widget=forms.PasswordInput(attrs={'autocomplete': 'new-password'}),

        # help_text=password_validation.password_validators_help_text_html(),

    )

    password2 = forms.CharField(

        label=_("Password confirmation"),

        widget=forms.PasswordInput(attrs={'autocomplete': 'new-password'}),

        strip=False,

        help_text=_("Enter the same password as before, for verification."),

    )

 

    class Meta:

        model = CustomUser

        # fields = "('username',  'password' ,'password2', 'userchoice')"

        fields = ("username",)

        # field_classes = {'username': UsernameField}

    def __init__(self, *args, **kwargs):

        super().__init__(*args, **kwargs)     

        self.fields['username'].help_text = 'Enter you Staff ID'

    def clean_password2(self):

        password1 = self.cleaned_data.get("password1")

        password2 = self.cleaned_data.get("password2")

        if password1 and password2 and password1 != password2:

            raise ValidationError(

                self.error_messages['password_mismatch'],

                code='password_mismatch',

            )

        return password2

    def save(self, commit=True):

        user = super().save(commit=False)

        user.set_password(self.cleaned_data["password1"])

        if commit:

            user.save()

        return user

..............

the is_doctor , is_nurse   and is_admin fields comes at the userchageform.. is there a way to validate the fields at admin level.  I mean if someone , checked more than one designation then , a field error have to appear on the admin userchangeform,   Is there any way to customize the userchangeform...

Any help would be highly appreciable , 

[Sharif Mehedi]

You can do something like:

IN:

class CustomUserCreationForm(forms.ModelForm):

    ....

    def clean(self):

        cleaned_data = super().clean()

        # put your custom validator here!

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