build-a-backend-api-python-drf-beginner-cheat-sheet

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build-a-backend-api-python-drf-beginner-cheat-sheet

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Supplementary cheat sheet document for our Udemy course: Build a Backend REST API with Python & Django - Beginner

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README.md

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# 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](https://londonapp.dev/c1)

- [Git](#git)
- [SSH Key Management](#ssh-key-management)
- [Virtual Environments](#virtual-environments)
- [Django Management Commands](#django-management-commands)
- [Vagrant](#vagrant)
- [Terminal / GitBash Commands](#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 ..
```

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