Django

Notes

Model - Defines logical data structure
- Data handler between DB and View
Template - Presentation later
- Plain-text template system keeping everything that browser renders
View - Uses Model to communicate to DB
- Transfers data to template for viewing
Framework itself acts as Controller
- Sending requests to views according to URL config

Outer mysite
- Container for project
- Contains:
  - manage.py - cmd utility to interact with project
    - Editing not required
  - Mysite Directory
    - Containing:
      - init.py - Tells python to treat directory as module
        
        Empty file
      - asgi.py - Config to run project as Async Server Gateway Intferface app with compatiable web servers
        
        Python standard for aysnc apps and web servers (E.g. Daphne, Uvicorn)
      - settings.py - Settings and config for project
        
        As well as defaults
      - urls.py - URLs patterns defined here and each URL is mapped to a view
      - wsgi.py - Config to run project as WSGI (Web Server Gateway Interface) app
        
        With web server that are WSGI-compatiable
        
        E.g. APache, Gunicorn, uWSGI

** Blog app directory **
- init.py
- admin.py - Register models we want in optional django admin site
- apps.py - Main config of blog app
- migrations - Directory with app DB migrations
  - Allows Django to track any changes to model and sync DB in correspondance
  - Also contains init.py
- models.py - App data models
  - Each model maps to single DB table
    - Attribute of class represents DB field
  - Can be left empty
- tests.py - Tests for application
- views.py - Logic of app goes inside here
  - Each view gets HTTP request, processes request and returns response