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serializers.py
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serializers.py
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from django.contrib.auth import get_user_model, authenticate
from django.conf import settings
from django.contrib.auth.forms import PasswordResetForm, SetPasswordForm
from django.contrib.auth.tokens import default_token_generator
from django.utils.http import urlsafe_base64_decode as uid_decoder
from django.utils.translation import ugettext_lazy as _
from django.utils.encoding import force_text
from rest_framework import serializers, exceptions
from rest_framework.exceptions import ValidationError
from .models import TokenModel
from .utils import import_callable
# Get the UserModel
UserModel = get_user_model()
class LoginSerializer(serializers.Serializer):
username = serializers.CharField(required=False, allow_blank=True)
email = serializers.EmailField(required=False, allow_blank=True)
password = serializers.CharField(style={'input_type': 'password'})
def _validate_email(self, email, password):
user = None
if email and password:
user = authenticate(email=email, password=password)
else:
msg = _('Must include "email" and "password".')
raise exceptions.ValidationError(msg)
return user
def _validate_username(self, username, password):
user = None
if username and password:
user = authenticate(username=username, password=password)
else:
msg = _('Must include "username" and "password".')
raise exceptions.ValidationError(msg)
return user
def _validate_username_email(self, username, email, password):
user = None
if email and password:
user = authenticate(email=email, password=password)
elif username and password:
user = authenticate(username=username, password=password)
else:
msg = _('Must include either "username" or "email" and "password".')
raise exceptions.ValidationError(msg)
return user
def validate(self, attrs):
username = attrs.get('username')
email = attrs.get('email')
password = attrs.get('password')
user = None
if 'allauth' in settings.INSTALLED_APPS:
from allauth.account import app_settings
# Authentication through email
if app_settings.AUTHENTICATION_METHOD == app_settings.AuthenticationMethod.EMAIL:
user = self._validate_email(email, password)
# Authentication through username
elif app_settings.AUTHENTICATION_METHOD == app_settings.AuthenticationMethod.USERNAME:
user = self._validate_username(username, password)
# Authentication through either username or email
else:
user = self._validate_username_email(username, email, password)
else:
# Authentication without using allauth
if email:
try:
username = UserModel.objects.get(email__iexact=email).get_username()
except UserModel.DoesNotExist:
pass
if username:
user = self._validate_username_email(username, '', password)
# Did we get back an active user?
if user:
if not user.is_active:
msg = _('User account is disabled.')
raise exceptions.ValidationError(msg)
else:
msg = _('Unable to log in with provided credentials.')
raise exceptions.ValidationError(msg)
# If required, is the email verified?
if 'rest_auth.registration' in settings.INSTALLED_APPS:
from allauth.account import app_settings
if app_settings.EMAIL_VERIFICATION == app_settings.EmailVerificationMethod.MANDATORY:
email_address = user.emailaddress_set.get(email=user.email)
if not email_address.verified:
raise serializers.ValidationError(_('E-mail is not verified.'))
attrs['user'] = user
return attrs
class TokenSerializer(serializers.ModelSerializer):
"""
Serializer for Token model.
"""
class Meta:
model = TokenModel
fields = ('key',)
class UserDetailsSerializer(serializers.ModelSerializer):
"""
User model w/o password
"""
class Meta:
model = UserModel
fields = ('pk', 'username', 'email', 'first_name', 'last_name')
read_only_fields = ('email', )
class JWTSerializer(serializers.Serializer):
"""
Serializer for JWT authentication.
"""
token = serializers.CharField()
user = serializers.SerializerMethodField()
def get_user(self, obj):
"""
Required to allow using custom USER_DETAILS_SERIALIZER in
JWTSerializer. Defining it here to avoid circular imports
"""
rest_auth_serializers = getattr(settings, 'REST_AUTH_SERIALIZERS', {})
JWTUserDetailsSerializer = import_callable(
rest_auth_serializers.get('USER_DETAILS_SERIALIZER', UserDetailsSerializer)
)
user_data = JWTUserDetailsSerializer(obj['user'], context=self.context).data
return user_data
class PasswordResetSerializer(serializers.Serializer):
"""
Serializer for requesting a password reset e-mail.
"""
email = serializers.EmailField()
password_reset_form_class = PasswordResetForm
def get_email_options(self):
"""Override this method to change default e-mail options"""
return {}
def validate_email(self, value):
# Create PasswordResetForm with the serializer
self.reset_form = self.password_reset_form_class(data=self.initial_data)
if not self.reset_form.is_valid():
raise serializers.ValidationError(self.reset_form.errors)
return value
def save(self):
request = self.context.get('request')
# Set some values to trigger the send_email method.
opts = {
'use_https': request.is_secure(),
'from_email': getattr(settings, 'DEFAULT_FROM_EMAIL'),
'request': request,
}
opts.update(self.get_email_options())
self.reset_form.save(**opts)
class PasswordResetConfirmSerializer(serializers.Serializer):
"""
Serializer for requesting a password reset e-mail.
"""
new_password1 = serializers.CharField(max_length=128)
new_password2 = serializers.CharField(max_length=128)
uid = serializers.CharField()
token = serializers.CharField()
set_password_form_class = SetPasswordForm
def custom_validation(self, attrs):
pass
def validate(self, attrs):
self._errors = {}
# Decode the uidb64 to uid to get User object
try:
uid = force_text(uid_decoder(attrs['uid']))
self.user = UserModel._default_manager.get(pk=uid)
except (TypeError, ValueError, OverflowError, UserModel.DoesNotExist):
raise ValidationError({'uid': ['Invalid value']})
self.custom_validation(attrs)
# Construct SetPasswordForm instance
self.set_password_form = self.set_password_form_class(
user=self.user, data=attrs
)
if not self.set_password_form.is_valid():
raise serializers.ValidationError(self.set_password_form.errors)
if not default_token_generator.check_token(self.user, attrs['token']):
raise ValidationError({'token': ['Invalid value']})
return attrs
def save(self):
return self.set_password_form.save()
class PasswordChangeSerializer(serializers.Serializer):
old_password = serializers.CharField(max_length=128)
new_password1 = serializers.CharField(max_length=128)
new_password2 = serializers.CharField(max_length=128)
set_password_form_class = SetPasswordForm
def __init__(self, *args, **kwargs):
self.old_password_field_enabled = getattr(
settings, 'OLD_PASSWORD_FIELD_ENABLED', False
)
self.logout_on_password_change = getattr(
settings, 'LOGOUT_ON_PASSWORD_CHANGE', False
)
super(PasswordChangeSerializer, self).__init__(*args, **kwargs)
if not self.old_password_field_enabled:
self.fields.pop('old_password')
self.request = self.context.get('request')
self.user = getattr(self.request, 'user', None)
def validate_old_password(self, value):
invalid_password_conditions = (
self.old_password_field_enabled,
self.user,
not self.user.check_password(value)
)
if all(invalid_password_conditions):
raise serializers.ValidationError('Invalid password')
return value
def validate(self, attrs):
self.set_password_form = self.set_password_form_class(
user=self.user, data=attrs
)
if not self.set_password_form.is_valid():
raise serializers.ValidationError(self.set_password_form.errors)
return attrs
def save(self):
self.set_password_form.save()
if not self.logout_on_password_change:
from django.contrib.auth import update_session_auth_hash
update_session_auth_hash(self.request, self.user)