python - working outside of application context - Flask

Question

def get_db(self,dbfile):
    if hasattr(g, 'sqlite_db'): self.close_db(g.sqlite_db)
    try:
        g.sqlite_db = self.connect_db('{}/{}'.format(app.root_path, dbfile))
    except sqlite3.OperationalError as e:
        raise e

    return g.sqlite_db

Hi this code is located inside DB class, The error I get is

RuntimeError: working outside of application context

the error occurs on this line

g.sqlite_db = self.connect_db('{}/{}'.format(app.root_path, dbfile))

I think the problem is with g, it is imported like that from flask import g

How this error can be fixed? Thanks.

Answer 1

Maybe you need to call your function inside an application context:

with app.app_context():
  # call your method here