• Create a folder called: First-Django-Project
• Create Virtual Environment called: venv: python3 -m venv venv
• Activate venv: source venv/bin/activate
• Install Django - pip install django
  • other pip commands: pip uninstall, pip list, pip freeze (save to file - pip freeze > requirements.txt)
• Create requirements.txt: pip freeze > requirements.txt
• Start the project

  # The . at the end is to keep the directory structure simpler
  django-admin startproject core .
  

• Run the server to make sure things worked OK

  python manage.py runserver
  

veryacademy

Django Initiation part of the Very Academy Udemy Course

Set up a virtual environment, installed django, created a project and ran the server to see that it all worked

python -m venv venv
source venv/bin/activate
pip install django
django-admin startproject core .
python manage.py runserver

Now create an app for our project called newapp

./manage.py startapp newapp

- Some tutorials will put the apps inside the project directory /core/newapp, but that's not his preference

mkdir ./core/newapp
./manage.py startapp newapp ./core/newapp

- Generally apps used to make project easier to manage by creating components

Registering a Django App

• Need to add our app to the INSTALLED_APPS list in core/settings.py

  "newapp",
  

More About the Django Development Server

• ./manage.py runserver 8080 is how you change to a different port

Django Request-Response Cycle

• browser sends request to server, then server grabs url (/about, /help, etc.)
• url then points at a view which grabs a template, static files and stuff from the database to build web page
• web page then gets sent back to the user
• admin page is pre built by Django, but have to ./manage.py migrate to get it to work
• admin page is at localhost:8000/admin

URL Pattern - Create a urls file in the app and connect it to the project

• Notice on the urls the / goes at the end not the beginning
• Create urls.py in newapp directory
• In project urls.py add ,include to from django.urls import path
• In project urls.py add the app urls file to urlpatterns list

  path("", include('newapp.urls'))
  

• Edit the app urls.py file and create a url for the index page of the website

  from django.urls import path
  from . import views
  
  urlpatterns = [
      path("", views.home)
  ]
  

Create a view

• Now in the views.py file in the app directory

  from django.shortcuts import render
  from django.http import HttpResponse
  # Create your views here.
  # Using function based views here
  
  def home(request):
      return HttpResponse("Hello World")
  

Create an HTML Template

• Use template instead of typing html directly into the home view
• Create a folder called templates in the app folder.
• Create index.html inside the templates folder
• I just used emmet for an html template and added an h1 saying Hello World

Connect the template to a view

• In views.py in the app folder return a template rather than html
• return render(request, 'index.html')

Django Application from a requirements.txt file

• requirements.txt contains what the project needs
• To install from a requirements.txt file

  python -m venv venv
  source venv/bin/activate
  pip -r requirements.txt
  ./manage.py migrate
  

• To create pip freeze > requirements.txt