[WIP] New model class and dao for notification. This will be used for

recording status and outcome of sending notifications.

app/dao/notifications_dao.py

@@ -0,0 +1,22 @@
+from app import db
+from app.models import Notification
+
+
+def save_notification(notification, update_dict={}):
+    if update_dict:
+        update_dict.pop('id', None)
+        update_dict.pop('job', None)
+        update_dict.pop('service_id', None)
+        update_dict.pop('template_id', None)
+        Notification.query.filter_by(id=notification.id).update(update_dict)
+    else:
+        db.session.add(notification)
+    db.session.commit()
+
+
+def get_notification(job_id, notification_id):
+    return Notification.query.filter_by(job_id=job_id, id=notification_id).one()
+
+
+def get_notifications_by_job(job_id):
+    return Notification.query.filter_by(job_id=job_id).all()