How to use PyMongo with Flask Blueprints?

Question

What is the correct way of picking up mongo object inside Blueprints?

Here is how I have my parent login.py:

app.config.from_object(\         


        

Answer 1

You're are initializing the PyMongo driver twice, once in child.py and a second time on child2.py.

Try initializing the PyMongo connection in the file which sets up your app object and then import it in the children:

login.py:

app.config.from_object('config')
from flask.ext.pymongo import PyMongo
from child import child
from child2 import child2


app = Flask(__name__)
mongo = PyMongo(app)

# Register blueprints
def register_blueprints(app):
    # Prevents circular imports
    app.register_blueprint(child2.child2)
    app.register_blueprint(child.child)

register_blueprints(app)

in child.py

from app import app, mongo

child = Blueprint('child', __name__)

child2.py:

from app import app, mongo

child2 = Blueprint('child2', __name__)