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guyoun/event_listens_example.py

Created March 14, 2016 05:41
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Usage of listens_for() in sqlalchemy
Raw
event_listens_example.py
from sqlalchemy import event
@event.listens_for(Model, 'after_update')
@event.listens_for(Model, 'after_delete')
@event.listens_for(Model, 'after_insert')
def receive_after_change(mapper, connection, target):
from flask import current_app
current_app.logger.info('Model>receive_after_change')
from subprocess import call
call("touch tmp/reload", shell=True)
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