Django - Auth with mongoengine DB

Question

I want to handle authentications in my Django project with my mongoengine db.

I tried a few examples about this stuff answered in old questions but it didn\'t run. I

Answer 1

I could not reproduce the error message you are getting, @Bugfixer. I assume it is happening because you have AUTH_USER_MODEL set on your settings, this entry should be in your settings only if you have a custom user model.

Will try to put in this answer exactly what I did to make it run with a custom user model on which I add a favorites array:

settings.py

from mongoengine import *

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.dummy',
    }
}

AUTHENTICATION_BACKENDS = (
    'mongoengine.django.auth.MongoEngineBackend',
    ...
)

INSTALLED_APPS = (
    'django.contrib.auth',
    'mongoengine.django.mongo_auth',
    ....
)

SESSION_ENGINE = 'mongoengine.django.sessions'

AUTH_USER_MODEL=('mongo_auth.MongoUser')
MONGOENGINE_USER_DOCUMENT = 'MyAwesomeApp.app.models.CustomUser'

models.py

from mongoengine.django.auth import User
from mongoengine import *

class CustomUser(User):

    """Extend mongoengine User model"""
    favorites = ListField(ReferenceField(MyReferencedModel, dbref=False))

    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = () #must be list or tuple

    def toJSON(self):
        fav_list = []

        for f in self.favorites:                
            fav_list.append(f.toJSON())

        userJSON = {}
        userJSON['id'] = str(self.pk)
        userJSON['favorites'] = fav_list
        userJSON['email'] = str(self.email)
        userJSON['last_name'] = str(self.last_name)
        userJSON['first_name'] = str(self.first_name)
        userJSON['username'] = str(self.username)
        return simplejson.dumps(userJSON)

views.py

from MyAwesomeApp.app.models import CustomUser

#util
def extractDataFromPost(request):
    rawData = request.body.replace('false', 'False')
    rawData = rawData.replace('true', 'True')
    rawData = rawData.replace('null', 'None')
    return eval(rawData)  

#util
def jsonResponse(responseDict):
    return HttpResponse(simplejson.dumps(responseDict), mimetype='application/json')

def createUser(request):
    data = extractDataFromPost(request)

    email = data["email"]
    password = data["password"]
    user_type = data["user_type"]

    try: 
        user = CustomUser.objects.get(username=email)
        return jsonResponse({'error':True, 'message': 'Email já cadastrado'})
    except CustomUser.DoesNotExist:
        user = CustomUser.create_user(email, password, email)
        user.favorites = []
        user.save()
        user = authenticate(username=email, password=password)
        user.backend = 'mongoengine.django.auth.MongoEngineBackend'
        login(request, user)
        request.session.set_expiry(3600000) # 1 hour timeout
        del user.password
        return HttpResponse(simplejson.dumps(user.toJSON())) 

Let me know if you have any trouble.

Regards