How to use the runestone.db function in runestone

UserMixin, RoleMixin, login_required  

from runestone import db, app


# Define models

class Role(db.Document, RoleMixin):
    name = db.StringField(max_length=80, unique=True)
    description = db.StringField(max_length=255)

class User(db.Document, UserMixin):
    email = db.StringField(max_length=255)
    password = db.StringField(max_length=255)
    active = db.BooleanField(default=True)
    confirmed_at = db.DateTimeField()
    course = db.StringField(max_length=50)
    roles = db.ListField(db.ReferenceField(Role), default=[])

from runestone import db, app


# Define models

class Role(db.Document, RoleMixin):
    name = db.StringField(max_length=80, unique=True)
    description = db.StringField(max_length=255)

class User(db.Document, UserMixin):
    email = db.StringField(max_length=255)
    password = db.StringField(max_length=255)
    active = db.BooleanField(default=True)
    confirmed_at = db.DateTimeField()
    course = db.StringField(max_length=50)
    roles = db.ListField(db.ReferenceField(Role), default=[])

from flask.ext.mongoengine import MongoEngine
from flask.ext.security import Security, MongoEngineUserDatastore, \
    UserMixin, RoleMixin, login_required  

from runestone import db, app


# Define models

class Role(db.Document, RoleMixin):
    name = db.StringField(max_length=80, unique=True)
    description = db.StringField(max_length=255)

class User(db.Document, UserMixin):
    email = db.StringField(max_length=255)
    password = db.StringField(max_length=255)
    active = db.BooleanField(default=True)
    confirmed_at = db.DateTimeField()
    course = db.StringField(max_length=50)
    roles = db.ListField(db.ReferenceField(Role), default=[])

from flask import Flask, Blueprint, render_template, request

from flask.ext.security import Security, MongoEngineUserDatastore, \
    UserMixin, RoleMixin, login_required  

auth = Blueprint('auth', __name__,
          template_folder='templates',static_folder='static')
    
from runestone import db, app
from runestone.model import *
from flask.ext.cors import cross_origin

# Setup Flask-Security
user_datastore = MongoEngineUserDatastore(db, User, Role)

# Create custom registration form here then add it on the constructor
# or maybe set it later with security.state.register_form
security = Security(app, user_datastore)

# Create a user to test with
@app.before_first_request
def create_user():
    user_datastore.create_user(email='matt@nobien.net', password='password')



# Views
@auth.route('/authtest')
@login_required
@cross_origin(supports_credentials=True)

from flask.ext.security import Security, MongoEngineUserDatastore, \
    UserMixin, RoleMixin, login_required  

from runestone import db, app


# Define models

class Role(db.Document, RoleMixin):
    name = db.StringField(max_length=80, unique=True)
    description = db.StringField(max_length=255)

class User(db.Document, UserMixin):
    email = db.StringField(max_length=255)
    password = db.StringField(max_length=255)
    active = db.BooleanField(default=True)
    confirmed_at = db.DateTimeField()
    course = db.StringField(max_length=50)
    roles = db.ListField(db.ReferenceField(Role), default=[])

from flask.ext.mongoengine import MongoEngine
from flask.ext.security import Security, MongoEngineUserDatastore, \
    UserMixin, RoleMixin, login_required  

from runestone import db, app


# Define models

class Role(db.Document, RoleMixin):
    name = db.StringField(max_length=80, unique=True)
    description = db.StringField(max_length=255)

class User(db.Document, UserMixin):
    email = db.StringField(max_length=255)
    password = db.StringField(max_length=255)
    active = db.BooleanField(default=True)
    confirmed_at = db.DateTimeField()
    course = db.StringField(max_length=50)
    roles = db.ListField(db.ReferenceField(Role), default=[])