Setup Django with django-tenancy (semi-isolated)

This story will show how to install setup Django to work with multiple clients, like a real SAAS.

Prerequisites

I'm working on an Ubuntu 20.04, Django 3.1.1 and django-tenants 3.2.1. Also, I'm assuming you have a running postgres server running …

In Part 2 we will setup Sanic to render html templates.

Install and setup Jinja2 extension

We will enable our application to render Jinja2 templates. Jinja2 is a template engine developed by Armin Ronacher (the developer of Flask and many other things) and documentation for the project can be found …

Welcome to my Sanic Web Tutorial where you will learn to use the async web framework Sanic to create and deploy your own website.

Assumptions

I assume that you are familiar with using Python and virtualenv, but you do not need to be an expert. You should be able to …

Deploy Flask app to Heroku with Docker

This story will show how to install deploy a simple Flask app to Heroku via Docker and Gitlab CI.

Prerequisites

I'm assuming that you are familiar with the basics of Docker, Heroku, Flask and Gitlab.

Also, you have:
1 Heroku account with an …

How to install a Squid proxy on a Raspberry Pi

This story will show how to install Squid3 on a Raspberry Pi (1) and set it up as a proxy server

Squid as a proxy

Install Squid

First install squid

$ sudo apt install squid3

Enable the squid server to run …

How to setup Django and Celery with Docker and docker-compose

This story sets up Django and adds Celery support to a docker-compose setup. I have updated this on 22 May, 2022 to use the newest version of Celery, which does foster a few changes.

Setup basic Django project

First create …

How to setup Django with Docker and docker-compose

In this story I'll show how to setup a simple django application to use docker and docker-compose.

Install a base django project

First we need to install a basic Django app, we do this in a Python 3 virtual environment.

$ virtualenv venv …

How to setup Vagrant, Ansible and Postgresql

In this story I’ll be setting up Vagrant with a Postgresql server provisioned by Ansible. The setup will be pretty bare bone, so don’t use it as a blueprint for a production setup.

Setup Vagrant

Create a file named ‘Vagrantfile’ in …

How does Django's select_related works and when should you use it?

What problem does it solve?

Django's select_related() solves the problem when you want to access related fields on a queryset. Assume the models:

from django.db import models


class Author(models.Model):
    name = models.CharField(max_length=250)


class Book …

This blog post will show how IP addresses work, what subnetting is.

Binary to decimal for two byte numbers

First, it can be beneficial to memorize the following table, which is just a list of binary digits.

128  64  32  16  8  4  2  1

It makes it easy to …