Django

Pre-requisites

• Python 2.6 or higher - Higher version is better but 2.6 will do. You're on your own with Python 3.xx version.
  • For Windows users, see the last section
• pip:
  • Most *nix distributions come with easy_install. To check if its installed, do which easy_install. It should list the path to the file.
  • If the above works, then run this at command line easy_install pip. [might require you to install as admin]
• django: At command line run pip install django==1.4
  • To install it manually, especially for Windows users, see the last section.
• Bring Full on Nerdness

World is a better place with these

• Sublime - You will thank me later. Download link
• iTerm2 - Native terminal sucks. Download link

Agenda

Intro

• Http protocols
• Webservers & Zombies
• MVC, MVT, MVP and other crazy acronyms
• Convention over Configuration

Django

• Project Structure
• Django lightweight webserver - For testing
• settings.py- The bootstrapper
• Concept of Apps
• Models
  • Managers
  • Abstract
  • Relationships. Its tough!
• Views/URLs
  • Class vs Function
  • Decorators -> Don't know, go read python
• Forms
• Templates
  • Built in tags/filters
  • Custom tags/filters
• Admin
• Django Ecosystem => third party apps
• Testing -> Its like eating veggies. Its healthy but sucks.

Be wary of Magic

• Querying
  • Watch SQL queries in debugger
  • Index as needed
  • South
• It works on my machine execuses
  • Use same database engine
  • Remove hardcoded paths
• Packaging Conflicts
  • virtualenv

Making it faster

• Cache, Cache & Cache. Repeat with me
  • Redis, Memcached
• Only pull what you need
• Jinja2 Templating

Further Reading

• Signals
• Unit Test
• Packaging/Deployment
• Admin
• Full Django book

Q/A

Appendix

For Windows users

Python

• Install the latest python by going to this link. Install the 2.7 version.
• Install pip via this link.

Django

• Download the 1.4.x release from download page.
• Untar the downloaded file (e.g. tar xzvf Django-X.Y.tar.gz, where X.Y is the version number of the latest release).
• If you’re using Windows, you can download the command-line tool bsdtar to do this, or you can use a GUI-based tool such as 7-zip.
• Change into the directory created in step 2 (e.g. cd Django-X.Y).
• If you’re using Linux, Mac OS X or some other flavor of Unix, enter the command sudo python setup.py install at the shell prompt.
• If you’re using Windows, start a command shell with administrator privileges and run the command below. This will install Django in your Python installation’s site-packages directory.

      python setup.py install

*You should really move to a *nix distro or install virtual box and instal nix on it. You get all these issues with paths, case sensitivity and many more when you run a app developed in windows on linux