gistfile1.pytb

$ ./manage.py shell 
Python 2.7.3 (default, Sep 26 2013, 20:03:06) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from app.serializers import *
>>> u=UserSerializer(data={'username':'test1','password':'pass','password2':'pass'})
>>> u.errors
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/home/han/.virtualenvs/drf_test/local/lib/python2.7/site-packages/rest_framework/serializers.py", line 507, in errors
    ret = self.from_native(data, files)
  File "/home/han/.virtualenvs/drf_test/local/lib/python2.7/site-packages/rest_framework/serializers.py", line 919, in from_native
    instance = super(ModelSerializer, self).from_native(data, files)
  File "/home/han/.virtualenvs/drf_test/local/lib/python2.7/site-packages/rest_framework/serializers.py", line 348, in from_native
    return self.restore_object(attrs, instance=getattr(self, 'object', None))
  File "/home/han/.virtualenvs/drf_test/local/lib/python2.7/site-packages/rest_framework/serializers.py", line 903, in restore_object
    instance = self.opts.model(**attrs)
  File "/home/han/.virtualenvs/drf_test/local/lib/python2.7/site-packages/django/db/models/base.py", line 417, in __init__
    raise TypeError("'%s' is an invalid keyword argument for this function" % list(kwargs)[0])
TypeError: 'password2' is an invalid keyword argument for this function
>>> u=UserSerializer(data={'username':'test1','password':'pass','password2':'pas'})
>>> u.errors
{'password2': [u"The two password fields didn't match."]}
>>>

serializers.py

from django.contrib.auth.models import User

from rest_framework import serializers

class UserSerializer(serializers.ModelSerializer):
    password2 = serializers.CharField()

    class Meta:
        model = User
        fields = ('username', 'password', 'password2')

    def validate_password2(self, attrs, source):
        if attrs.get('password') == attrs.get('password2'):
            return attrs
        raise serializers.ValidationError(
            _("The two password fields didn't match."),
            code='password_mismatch',
        )