serializers.py

from rest_framework import serializers
from django.contrib.auth import authenticate
from django.contrib.auth.models import User
from rest_framework.authtoken.models import Token


class TokenSerializer(serializers.Serializer):
    token = serializers.CharField(max_length=500)


class LoginSerializer(serializers.Serializer):
    username = serializers.CharField()
    password = serializers.CharField()

    def validate(self, data):
        user = authenticate(**data)
        if user and user.is_authenticated:
            return user
        raise serializers.ValidationError("Incorrect.")


class RegisterSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ('first_name', 'username', 'email', 'password')
        extra_kwargs = {'password': {'write_only': True}}

    def create(self, validated_data):
        print(validated_data, len(validated_data))
        user = User.objects.create_user(first_name=validated_data['first_name'], username=str(validated_data['username']), email=str(validated_data['email']), password=str(validated_data['password']))

        return user


class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ['id', 'first_name', 'username', 'email']