Lesson 4 - App Structure

LEARN

Today's Agenda

• Get the tools setup - Python, Venv, Django
• Build an app from scratch
• Test your app with the dev server

Command line

• Windows powershell
• Mac linux
• Command Line

Tools

• Python 3
  • python3 --version
• Virtual Environment
  • python3 -m venv .venv
    • source .venv/bin/activate # On mac
    • .venv/Scripts/activate.bat # On windows
  • pipenv install
    • pipenv shell
  • deactivate
• Django
  • pip freeze
  • pip install django

templates

• define HTML for pages
• template loader to lookup templates

views.py

• logic to convert a request into a response
• written in Python
• calls hidden logic that does a lot of work

urls.py

• listens for specific requests
• define URL routes to pages
• maps the request onto a view

BUILD

Setup workflow

• new terminal window
• activate virtual environment
• edit window
• browser

Create a new project (Lesson 3)

Build the project

$ cd BACS350

$ mkdir week2/Hello

$ cd week2/Hello

$ django-admin startproject config .

$ python manage.py migrate

$ python manage.py runserver

Browse to web page

http://localhost:8000

Commit the changes

$ git add .

$ git commit -m 'Configure Hello app'

$ git push

Create a template

templates/about.html

<h1>My Name is Inigo Montoya</h1>
<p>Prepare to die</p>

templates/about.html

<h1>Home Page</h1>
<p>There's no place like home</p>

Create a route

config/urls.py

from django.urls import path
from django.views.generic import TemplateView

urlpatterns = [
    path('about', TemplateView.as_view(template_name="about.html")),
    path('home', TemplateView.as_view(template_name="home.html")),
]