Django

2006年9月2日 (六) 12:15的版本

Django: The Web framework for perfectionists with deadlines

• http://www.djangoproject.com/
• 下载 - http://download.huihoo.com/python/framework/django/

安装指南

First, download Django-0.95.tar.gz. Then:

tar xzvf Django-0.95.tar.gz
cd Django-0.95
sudo python setup.py install
cd /var/www
django-admin.py startproject mysite
cd mysite
python manage.py runserver
http://localhost:8000

创建一个poll应用

python manage.py startapp polls
vi polls/models.py
from django.db import models

class Poll(models.Model):
   question = models.CharField(maxlength=200)
   pub_date = models.DateTimeField('date published')

class Choice(models.Model):
   poll = models.ForeignKey(Poll)
   choice = models.CharField(maxlength=200)
   votes = models.IntegerField()

vi polls/settings.py
INSTALLED_APPS = (
   'django.contrib.auth',
   'django.contrib.contenttypes',
   'django.contrib.sessions',
   'django.contrib.sites',
   'mysite.polls'
)

创建数据库

mysql>create database pool

vi settings.py
DATABASE_ENGINE = 'mysql'
DATABASE_NAME = 'poll'
DATABASE_USER = 'root'
DATABASE_PASSWORD = 
DATABASE_HOST = 'localhost'
DATABASE_PORT = '3306'

python manage.py syncdb

python manage.py sql polls

BEGIN;
CREATE TABLE `polls_poll` (
    `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,
    `question` varchar(200) NOT NULL,
    `pub_date` datetime NOT NULL
);
CREATE TABLE `polls_choice` (
    `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,
    `poll_id` integer NOT NULL REFERENCES `polls_poll` (`id`),
    `choice` varchar(200) NOT NULL,
    `votes` integer NOT NULL
);
COMMIT;

可看到在mysql中已经创建了相关表

mysql> show tables;
+----------------------------+
| Tables_in_poll             |
+----------------------------+
| auth_group                 |
| auth_group_permissions     |
| auth_message               |
| auth_permission            |
| auth_user                  |
| auth_user_groups           |
| auth_user_user_permissions |
| django_content_type        |
| django_session             |
| django_site                |
| polls_choice               |
| polls_poll                 |
+----------------------------+
12 rows in set (0.00 sec)

python manage.py shell
>>> from mysite.polls.models import Poll, Choice
>>> Poll.objects.all()
[]
>>> from datetime import datetime
>>> p = Poll(question="What's up?", pub_date=datetime.now())
>>> p.save()
>>> p.id
1L
>>> p.question
"What's up?"
>>> p.pub_date
datetime.datetime(2006, 9, 1, 15, 8, 1, 135114)