A simple Django package to integrate Web Push Notification in your Application
Project description
Django-Webpush
Django-Webpush is a Package made for integrating and sending Web Push Notification in Django Application. This is a Work in Progress package. As the `Web Push Notification specification <https://www.w3.org/TR/push-api/>`__ is still in draft, things may change soon. So keep updated.
Currently, it Supports Sending Push Notification to Firefox 46+ and Chrome 52+.
Installation and Setup
You can install it easily from pypi by running
pip install django-webpush
After installing the package, add webpush in in your INSTALLED_APPS settings
INSTALLED_APPS = (
...
'webpush',
)If you would like to send notification to Google Chrome Users, you need to add a WEBPUSH_SETTINGS entry with the Vapid Credentials Like following:
WEBPUSH_SETTINGS = {
"VAPID_PUBLIC_KEY": "Vapid Public Key",
"VAPID_PRIVATE_KEY":"Vapid Private Key",
"VAPID_ADMIN_EMAIL": "admin@example.com"
}Replace ``”Vapid Public Key”`` and ``”Vapid Private Key”`` with your Vapid Keys. Also replace ``admin@example.com`` with your email so that the push server of browser can reach to you if anything goes wrong.
To know how to obtain Vapid Keys please see this ```py_vapid`` <https://github.com/web-push-libs/vapid/tree/master/python>`__ and `Google Developer Documentation <https://developers.google.com/web/fundamentals/push-notifications/subscribing-a-user#how_to_create_application_server_keys>`__. You can obtain one easily from `web-push-codelab.glitch.me <https://web-push-codelab.glitch.me/>`__. ``Application Server Keys`` and ``Vapid Keys`` both are same.
Then include webpush in the urls.py
urlpatterns =
url(r'^webpush/', include('webpush.urls'))
]
Then run Migration by ``python manage.py migrate``
Adding Web Push Information in Template
So in template, you need to load webpush_notifications custom template tag by following: > - If you are using built in templating engine, add {% load webpush_notifications %} in the template > - If you are using jinja or other templating engine, you can manually add the html header and button and other information. Documentation for them is coming soon. Working on getting a automated way for jinja users. If you would like to add support for them, patch are very much welcome.
Next, inside the <head></head> tag add {% webpush %}. Like following
<head>
{% webpush %}
</head>
Next, inside the <body></body> tag, insert {% webush_button %} where you would like to see the Subscribe to Push Messaging Button. Like following
<body>
<p> Hello World! </p>
{% webpush_button %}
</body>
Note: The Push Notification Button will show only if the user is logged in or any group named is passed through webpush context
*If you would like to mark the subscription as a group, like all person subscribe for push notification from the template should be marked as group and would get same notification, you should pass a ``webpush`` context to the template through views. The ``webpush`` context should have a dictionary like ``{“group”: group_name}``* . Like following
webpush = {"group": group_name } # The group_name should be the name you would define.
return render(request, 'template.html', {"webpush":webpush})
Note: If you dont pass group through the webpush context, only logged in users can see the button for subscription and able to get notification.
Sending Web Push Notification
A Web Push generally have a header and body. According to the W3C Specification, the data should be encrypted in transmission. the data is addressed as payload generally. Also a TTL header should be included indicating how much time the web push server store the data if the user is not online. So in order to send notification, see below.
If you would like to send notification to a specific group, do like following:
from webpush import send_group_notification payload = {"head": "Welcome!", "body": "Hello World"} send_group_notification(group_name="my_group", payload=payload, ttl=1000) # All subscribe subscribe through "my_group" will get a web push notification. A ttl of 1000 is passed so the web push server will store the data maximum 1000 milliseconds if any user is not onlineIf you would like to send Notification to a specific user, do like following ``` from webpush import send_user_notification
payload = {“head”: “Welcome!”, “body”: “Hello World”}
send_user_notification(user=user, payload=payload, ttl=1000) # Here in the user parameter, a user object should be passed # The user will get notification to all of his subscribed browser. A user can subscribe many browsers. ``` And the subscribers will get a notification like
License
Copyright © 2016 by Safwan Rahman
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
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