Aamish Baloch aamishbaloch

Implementing Sign In with Apple in your Django (Python) backend

Apple announced a new feature, "Sign In with Apple" enabling users to sign in to apps using their Apple ID. This new feature is meant to be a secure and privacy-friendly way for users to create an account in apps. Most iOS and Mac users already have an Apple ID, and this new feature lets them use that Apple ID to sign in to other apps and websites.

Apple is taking a firm stance to protect user's privacy, rather than letting applications see the user's real email address, they will provide the app with a fake or random email address unique to each app. Don't you worry! Developers will still be able to send emails to these proxy addresses, it just means developers won't be able to use the email addresses in any other way. This feature will also allow users to disable email forwarding per application.

How it works

Apple adopted the existing standards OAuth 2.0 and OpenID Connect to use as the foundation for their new API. If you're familiar

Vagrant error :NFS is reporting that your exports file is invalid

==> default: Exporting NFS shared folders...
NFS is reporting that your exports file is invalid. Vagrant does
this check before making any changes to the file. Please correct
the issues below and execute "vagrant reload":

exports:2: path contains non-directory or non-existent components: /Users/<username>/path/to/vagrant
exports:2: no usable directories in export entry
exports:2: using fallback (marked offline): /

Undo Last Commit

Sometime we might came across the situation where we have to undo the last commit.

So for the soft undo:

git reset --soft HEAD~1

If you don't want to keep these changes, simply use the --hard flag. Be sure to only do this when you're sure you don't need these changes anymore.

Redirect to another URL in Django Template View

Sometime we might came across the need to redirect to another url from django template. Like if you want to check if user is authenticated or not. So following is the example for doing that in Django.

def dispatch(self, request, *args, **kwargs):
    if not request.user.is_authenticated():
        return redirect('login')

 return super(MyTemplateView, self).dispatch(request, *args, **kwargs)

Creating http request object a setting Params in Django

Whenever we have to call an external link(URL) and get any sort of data from that, we might came across the need to create a http request object and setting up some params for that. So following is the example for doing that in Django.

from django.http import HttpRequest

request = HttpRequest()

request.method = 'GET'

Load Testing a Django Application using LocustIO

Django framework, used for buliding web applications quickly in a clean and efficient manner. As the size of application increases, a common issue faced by all teams is performance of the application. Measuring performance and analysis the areas of improvement is key to deliver a quality product.

LocustIO, an open source tool written in python, is used for load testing of web applications. It is simple and easy to use with web UI to view the test results. It is scalable and can be distributed over multiple machines.

This article demonstrates an example to use locust for load testing of our django web application.

Before starting load testing, we have to decide the pages which we want to test. In our case, we expect users to follow the scenario where they log in, visit different pages and submit CSRF protected forms.

Execute Management Command Programmatically

Sometimes you have to run the management commands in some tasks or other sort of programmatical features. So you can do this very easily.

How to run?

You can run this programmatically as follows:

from django.core.management import call_command
call_command('{command name}', interactive=True/False)

Manual Deployment of Django Application

Deployment of Django application to ubuntu based server. We'll be using Nginx & WSGI to run the application. PostgresSQL will be used as the database in this example.

Pem File

You have to download pem file from the console to ssh into the server.

ssh -i key.pem ubuntu@(ip-address)

	import jwt

	headers = {
	'kid': settings.SOCIAL_AUTH_APPLE_KEY_ID
	}

	payload = {
	'iss': settings.SOCIAL_AUTH_APPLE_TEAM_ID,
	'iat': timezone.now(),
	'exp': timezone.now() + timedelta(days=180),

	import jwt
	import requests
	from datetime import timedelta
	from django.conf import settings
	from django.utils import timezone
	from social_core.backends.oauth import BaseOAuth2
	from social_core.utils import handle_http_errors


	class AppleOAuth2(BaseOAuth2):