flask sqlarchemy事件监听(flask 98)

db删除了后，也要删除相应的文件

@db.event.listens_for(User, 'after_delete', named=True) def delete_avatars(**kwargs): target = kwargs['target'] for filename in [target.avatar_s, target.avatar_m, target.avatar_l, target.avatar_raw]: if filename is not None: # avatar_raw may be None path = os.path.join(current_app.config['AVATARS_SAVE_PATH'], filename) if os.path.exists(path): # not every filename map a unique file os.remove(path)

@db.event.listens_for(Photo, 'after_delete', named=True) def delete_photos(**kwargs): target = kwargs['target'] for filename in [target.filename, target.filename_s, target.filename_m]: path = os.path.join(current_app.config['ALBUMY_UPLOAD_PATH'], filename) if os.path.exists(path): # not every filename map a unique file os.remove(path)