Error of "Connect another account"

[koorukuroo]

I'm running a example of mongodb.

First, I login a Google.

And try the "Connect another account" with Facebook, Github and Twitter.
But I received the error message.

Could not register: id must be an instance of (str, unicode, ObjectId), not <class 'werkzeug.local.LocalProxy'>

[wooyek]

Can you post a traceback from a development server console?

[koorukuroo]

2015-12-28 04:28:35,527 INFO    discovery.build - URL being requested: GET https://www.googleapis.com/discovery/v1/apis/plus/v1/rest
2015-12-28 04:28:35,550 INFO    discovery.method - URL being requested: GET https://www.googleapis.com/plus/v1/people/me?alt=json
2015-12-28 04:28:35,841 WARNING core.no_connection - id must be an instance of (str, unicode, ObjectId), not <class 'werkzeug.local.LocalProxy'>
Traceback (most recent call last):
  File "build/bdist.linux-x86_64/egg/flask_social_blueprint/core.py", line 62, in no_connection
    connection = self.create_connection(profile, provider)
  File "build/bdist.linux-x86_64/egg/flask_social_blueprint/core.py", line 84, in create_connection
    return self.connection_adapter.from_profile(current_user, profile)
  File "/home/ubuntu/project/flask-social-blueprint/example/mongodb/auth/models.py", line 119, in from_profile
    connection = cls(user=user, **profile.data)
  File "/home/ubuntu/virtualenv/a/local/lib/python2.7/site-packages/mongoengine/base/document.py", line 85, in __init__
    value = field.to_python(value)
  File "/home/ubuntu/virtualenv/a/local/lib/python2.7/site-packages/mongoengine/fields.py", line 937, in to_python
    value = DBRef(collection, self.document_type.id.to_python(value))
  File "/home/ubuntu/virtualenv/a/local/lib/python2.7/site-packages/mongoengine/base/fields.py", line 392, in to_python
    value = ObjectId(value)
  File "/home/ubuntu/virtualenv/a/local/lib/python2.7/site-packages/bson/objectid.py", line 92, in __init__
    self.__validate(oid)
  File "/home/ubuntu/virtualenv/a/local/lib/python2.7/site-packages/bson/objectid.py", line 203, in __validate
    text_type.__name__, type(oid)))
TypeError: id must be an instance of (str, unicode, ObjectId), not <class 'werkzeug.local.LocalProxy'>
2015-12-28 04:28:35,842 INFO    _internal._log - 112.120.8.53 - - [28/Dec/2015 04:28:35] "GET /_social/callback/Google?code=4/thimwzJk9j3U4yJEXpb1i_orJv1z1FQ HTTP/1.1" 302 -
2015-12-28 04:28:35,945 INFO    _internal._log - 112.120.8.53 - - [28/Dec/2015 04:28:35] "GET / HTTP/1.1" 200 -

[koorukuroo]

@wooyek I tested your new example for mongodb. It's well work~!
But when I tried "Connect another account", flash message is that
Could not register: Cannot create new user, email blabla@gmail.com is already used. Login and then connect external profile.

I can't connect other service id.