how to use db instance in flask-apscheduler's jobs function - flask

Question

When I used flask-apscheduler(not apscheduler), I have some problems in my flask web project. Especially when I used db(flask-sqlalchemy) objects. The problem may be:
JOBS = [
{
'id': 'job1',
'func': 'app.monitor.views:test',
'args': (),
'trigger': 'interval',
'seconds': 2
}
]
./app/init.py:
from flask import Flask
from flask.ext.bootstrap import Bootstrap
from flask.ext.mail import Mail
from flask.ext.moment import Moment
from flask.ext.sqlalchemy import SQLAlchemy
from flask.ext.login import LoginManager
from flask.ext.pagedown import PageDown
from flask_apscheduler import APScheduler
from celery import Celery
# from apscheduler.schedulers.blocking import BlockingScheduler
from config import config,Config
bootstrap = Bootstrap()
mail = Mail()
moment = Moment()
db = SQLAlchemy()
pagedown = PageDown()
celery = Celery(__name__, broker=Config.CELERY_BROKER_URL)
# https://pypi.python.org/pypi/Flask-APScheduler
scheduler = APScheduler()
login_manager = LoginManager()
login_manager.session_protection = 'strong'
login_manager.login_view = 'auth.login'
def create_app(config_name):
app = Flask(__name__)
app.config.from_object(config[config_name])
config[config_name].init_app(app)
bootstrap.init_app(app)
mail.init_app(app)
moment.init_app(app)
db.init_app(app)
login_manager.init_app(app)
pagedown.init_app(app)
scheduler.init_app(app)
celery.conf.update(app.config)
if not app.debug and not app.testing and not app.config['SSL_DISABLE']:
from flask.ext.sslify import SSLify
sslify = SSLify(app)
from .monitor import monitor as monitor_1_0_blueprint
from .laser import laser as laser_1_0_blueprint
app.register_blueprint(monitor_blueprint,url_prefix='/monitor/api')
app.register_blueprint(laser_1_0_blueprint,url_prefix='/laser/api/v1.0')
return app
Error 1:db is : Error 2:db is :No handlers
could be found for logger "apscheduler.executors.default" Error 3:db
is : raise RuntimeError('working outside of application context')
RuntimeError: working outside of application context
The key to the problem is to get the db and app objects in flask-apscheduler jobs function(views.py):
from app import scheduler
def test():
#to Solve the log error problem
import logging
log = logging.getLogger('apscheduler.executors.default')
log.setLevel(logging.INFO) # DEBUG
fmt = logging.Formatter('%(levelname)s:%(name)s:%(message)s')
h = logging.StreamHandler()
h.setFormatter(fmt)
log.addHandler(h)
#get the app object
app = scheduler.app
#get the db object and use it
with app.app_context():
print '........................',db

Answer 1

from app import scheduler#
def test():
#to Solve the log error problem
import logging
log = logging.getLogger('apscheduler.executors.default')
log.setLevel(logging.INFO) # DEBUG
fmt = logging.Formatter('%(levelname)s:%(name)s:%(message)s')
h = logging.StreamHandler()
h.setFormatter(fmt)
log.addHandler(h)
#get the app object
app = scheduler.app
#get the db object and use it
with app.app_context():
print '........................',db

Answer 2

def test():
#to Solve the log error problem
import logging
log = logging.getLogger('apscheduler.executors.default')
log.setLevel(logging.INFO) # DEBUG
fmt = logging.Formatter('%(levelname)s:%(name)s:%(message)s')
h = logging.StreamHandler()
h.setFormatter(fmt)
log.addHandler(h)
#get the app object
app = scheduler.app
#get the db object and use it
with app.app_context():
print '........................',db #the right db object