CODEWITHSUNDEEP
pythonflaskblueprint
alx
alx

Reputation: 844

Use flask variable outside of context

In the Flask application (initialized in __init__.py) I have two blueprints - auth and main . In the auth blueprint I'm trying to set some variable (will be loaded from db and depends from current_user.get_id()) which should be used in main blueprint as url-prefix:

auth.py

@auth.route('/login', methods=['POST'])
def login_post():
    username = request.form.get('username')
    password = request.form.get('password')

    user_inst = user.query.filter_by(username=username).first()


    if not user_inst or not check_password_hash(user_inst.password, password):
        flash('Invalid credentials. Check you input and try again.')
        return redirect(url_for('auth.login')) 

    login_user(user_inst)
    
    g.team_name = 'some_team_name'
    #session['team_name'] = 'some_team_name'
    
    # if the above check passes, then we know the user has the right credentials
    return redirect(url_for('main.some_func'))

In the main blueprint, it's required to get the team_name variable:

main = Blueprint('main', __name__, static_folder="static", static_url_path="", url_prefix=g.team_name)

Could you please advise is there a proper way to import variable from auth to main (before its initializing) without getting:

RuntimeError: Working outside of application context.

Upvotes: 0

Views: 416

Answers (1)

madzohan
madzohan

Reputation: 11808

Basic fix of your problem is registering blueprints within app.app_context():

And seems like it is your first flask project and it is a common problem with thinking about the project structure. Read about Flask application factory pattern and apply it.

your_app/__init__.py

def create_app(app_config):
    app = Flask(__name__)
    with app.app_context():
        from your_app.somewhere import team_name

        app.register_blueprint(team_name)
    return app

Upvotes: 1

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