alternative-backend-service/users/serializers.py

from rest_framework import serializers
from django.contrib.auth.password_validation import validate_password
from .models import CustomUser, UserProfile

class UserProfileSerializer(serializers.ModelSerializer):
    class Meta:
        model = UserProfile
        fields = ['bio', 'timezone', 'created_at', 'updated_at']

class UserRegistrationSerializer(serializers.ModelSerializer):
    password = serializers.CharField(write_only=True, required=True, validators=[validate_password])
    password2 = serializers.CharField(write_only=True, required=True)
    profile = UserProfileSerializer(read_only=True)

    class Meta:
        model = CustomUser
        fields = ['email', 'password', 'password2', 'first_name', 'last_name', 'profile']
        extra_kwargs = {
            'first_name': {'required': True},
            'last_name': {'required': True}
        }

    def validate(self, attrs):
        if attrs['password'] != attrs['password2']:
            raise serializers.ValidationError({"password": "Password fields didn't match."})
        return attrs

    def create(self, validated_data):
        validated_data.pop('password2')
        user = CustomUser.objects.create_user(
            email=validated_data['email'],
            password=validated_data['password'],
            first_name=validated_data['first_name'],
            last_name=validated_data['last_name'],
        )
        return user

class UserSerializer(serializers.ModelSerializer):
    profile = UserProfileSerializer(read_only=True)
    
    class Meta:
        model = CustomUser
        fields = ['id', 'email', 'first_name', 'last_name', 'phone_number', 'profile']