Django 学习笔记

April 15, 2014

Writing your first Django app, part 1, Template

1. Django follows MVC architecture pattern

2. Install

3. Hello, World

   • create project

   django-admin.py startproject mysite
   

   • project structure

     ➜ python tree mysite mysite ├── manage.py └── mysite ├── init.py ├── settings.py ├── urls.py └── wsgi.py

   • Run

4. settings.py

• DB

• debug

• Applications

1. Project v.s. Apps
2. Create App

   $ python manage.py startapp polls
   

April 16, 2014

Writing your first Django app, part 2, Model

1. start server python manage.py runserver
2. admin site http://127.0.0.1/admin
3. Make the poll app modifiable in the admin
4. Customize the admin form

• reorder fields

• add field title

• add html classes

• add related objects, StackedInline, TabularInline

1. Customize the admin change list

• list_display

• admin_order_field

• short_description

• list_filter

• search_fields

• change list pagination

1. Customize the admin look and feel

• Customize your project's templates

• django template file

• customize the admin index page

April 16, 2014

Writing your first Django app, part 3, View

1. Django views are web pages. URL pattern, urlconfs: map url patterns to views.
2. Write your first view url() arguments, regex, view, kwargs, name
3. write views that actually do something

• return HttpResponse

• Raise exception such as Http404

• Django db API

• Template System

  • loader

  • render

  • removing hardcoded urls in template by using {% raw %} {% %} {% endraw %}

1. Namespacing URL names

April 16, 2014

Writing your first Django app, part 4, Form

1. Write a simple form
2. Use generic views: Less code is better

April 16, 2014

Writing your first Django app, part 5, Testing

1. automated testing
2. basic testing strategy
3. first test
4. test a view

April 16, 2014

Writing your first Django app, part 6, static files

1. Customize your app’s look and feel
2. Adding a background-image

April 22, 2014

Advanced tutorial: How to write reusable apps

1. package django apps to a tar file
2. virtualenv
3. python package index PyPI

May 14, 2014

i18n, l10n

Logging

May 15, 2014

Python 包管理

大部分现代语言都需要有包管理的机制，使得开发的组件可以重用。

Java使用jar打包组件，使用maven来管理组件和组件之间的依赖。

Python使用 pip 来安装和管理本地的组件。 其他工具有 easy_install , distribute

pip 从 PyPI （Python Package Index）线上网站查找需要的包，如同maven从mvncentral查找jar包。

Python使用 Eggs，如同Java使用 jar。

WSGI

Web Server Gateway interface

Werkzeug

Werkzeug is a WSGI utility for Python

Q

1. Run server by python manage.py runserver. How to start it as background service?