Undefined 'User"

[SelamZem]

On chapter 5_ page(219)

def clean_email(self):
data = self.cleaned_data['email']
if User.objects.filter(email=data).exists():
raise forms.ValidationError('Email already in use.')
return data

the name User is not defined anywhere in the class

[javadvahid]

you can add User manually to your forms.py like below

from django import forms
from django.contrib.auth import get_user_model
from .models import Profile

User = get_user_model()

or you can access the user model using the meta class like below

class UserEditForm(forms.ModelForm):
    class Meta:
        model = get_user_model()
        fields = ['first_name', 'last_name', 'email']
    def clean_email(self):
        data = self.cleaned_data['email']
        qs = self._meta.model.objects.exclude(
            id=self.instance.id
        ).filter(
            email=data
        )
        if qs.exists():
            raise forms.ValidationError('Email already in use')
        return data

there is yet another workaround, use the get_user_model directly

class UserEditForm(forms.ModelForm):
    class Meta:
        model = get_user_model()
        fields = ['first_name', 'last_name', 'email']
    def clean_email(self):
        data = self.cleaned_data['email']
        qs = get_user_model().objects.exclude(
            id=self.instance.id
        ).filter(
            email=data
        )
        if qs.exists():
            raise forms.ValidationError('Email already in use')
        return data

[SelamZem]

Thanx, this is really helpful...
I defined it before the class(just like you stated in the first one)...it worked..
It is great to learn there are other ways too, thnx