Build a Backend REST API with Python & Django - Beginner

This is the supplementary cheat sheet document for our course: Build a Backend REST API with Python & Django - Beginner

• Git
• SSH Key Management
• Virtual Environments
• Django Management Commands
• Vagrant
• Terminal / GitBash Commands

Git

Use the below Git commands in the Windows Command Prompt or macOS Terminal.

Configure default email and name

Note: This only needs to be done the first time you use Git on your machine

git config --global user.email "your@email.com"
git config --global user.name "Your Name"

Initialise a new Git repository

git init

Commit changes to Git

git add .
git commit -am "Commit message"

Set Git remote

Note: This only needs to be done once, the details are provided by GitHub after creating a new project

git remote add origin <URL TO PROJECT>
git push -u origin master

Push changes to GitHub

git push origin

SSH Key Management

The below commands are used to manage SSH keys on your local development machine.

Checking for existing SSH key

ls ~/.ssh/

Print contents of public key

cat ~/.ssh/id_rsa.pub

Generate new SSH key on your local machine

ssh-keygen -t rsa -b 4096 -C "EMAIL ADDRESS"

Virtual Environments

The below commands are used for managing Virtual Environments using Python3-env. Use these commands when connected to your Vagrant server.

Create new environment

python -m venv ~/env

Activate virtual environment

source ~/env/bin/activate

De-activate virtual environment

deactivate

Install requirements from requirements.txt

Note: Virtual environment must be activated

pip install -r requirements.txt

Django Management Commands

Create new Django project

django-admin.py startproject profiles_project  .

Create new Django app

python manage.py startapp profiles_api

Start Django development server

python manage.py runserver 0.0.0.0:8000

Create database migrations file

python manage.py makemigrations

Run migrations

python manage.py migrate

Create new superuser

python manage.py createsuperuser

Vagrant

These commands are used for managing Vagrant using the GitBash or Terminal windows.

Initialise Vagrant on project

vagrant init ubuntu/bionic64

Start Vagrant box

vagrant up

Connect to Vagrant box

vagrant ssh

Disconnect from Vagrant box

Note: This command is a standard linux command for ending an SSH session

exit

Stop Vagrant box

vagrant halt

Remove Vagrant box

vagrant destroy

Update Vagrant box image

Note: you must rebuild the image after updating

vagrant box update

Terminal / GitBash Commands

Change directory

cd /directory_name

Change to parent directory

cd ..