django unleashed - Saket Bhushan @gamebit07

Topics Covered ● Setting up your environment ● Project Scaffolding ● Overview of django ● Dive into Settings File ● Take some Notes ● Testing your application ● Some best practices ● Example Repo [https://github. com/fRuiApps/djbp]

Topics not Covered ● Documenting your Code ● Deploying your Code ● Performance Benchmarking & Optimization ● Django Forms

Your Environment ● Isolation ● Determinism ● Similarity ● pip ● virtualenv ● virtualenvwrapper Tutorial

Your Environment ● sudo apt-get install python-setuptools python-dev build-essential ● easy_install -U pip ● pip install virtualenv virtualenvwrapper ● requirements file ○ local ○ test ○ production

The Fountain Analogy http://www.flickr.com/photos/paparutzi/208664919/

Some of Django

Some of Django

Installation & Getting Started ● pip install -r requirements/test.txt ● pip install -r requirements/local.txt ● django-admin.py startproject djnotes ● python manage.py startapp noteapp -- settings=djnotes.settings.local

Project Structure ├── djnotes │ └── settings ├── noteapp │ ├── migrations │ ├── templates │ └── tests ├── static │ ├── css │ ├── img │ └── js │ ├── lib │ └── modules └── templates

Settings File ● Settings under version control ● Use Relative Path ○ no hardcoded paths eg. /home/betaversion/... ● Keep secret keys Secret ● Different Settings for different environment ● Custom Middlewares & ContextProcessors in a try catch block ● local_settings.py is an AntiPattern

Some more of Django ● Views - Presentation Logic ● Models - Business Logic ● Templates - Presentation Layer

Demo

RTF Code

Intro to TDD ● Unit vs Integration Test ● Test Runner ● What all to test? Detailed Article(s) on TDD Slides from my PyCon talk on TDD

Run Some Tests

Read Some Tests

Some minimal best practices ● Models ○ The database fields should be names as first_name and NOT FirstName. ○ The database table names(class names) should be named as ClassNames and not class_names ○ There should be a unicode method for each of the classes.

Some minimal best practices ● Templates ○ One base.html at the project level, and one base. html at each of the app levels. ○ App level base.html should extend the project level base.html ○ The variable in templates should have spaces between the name and bracket. Eg. {{ variable }} and NOT {{variable}}

Some minimal best practices ● urls ○ design pretty urls ■ use slugs instead of primary keys ○ Each of the urls should have a name, corresponding to the view name. ○ There should be one urls.py at the project level, and one urls.py at each app level. The project level urls. py should include each of the urls.py under a prefix. Further Reading

Thanks & Questions gmail - gamebit07 at gmail dot com twitter - @gamebit07