django: ทดลองติดตั้ง
เที่ยวนี้เอาแบบดิบ ๆ เลย
ติดตั้ง Django
http://www.djangoproject.com/documentation/install/
Install Python
# apt-get install python
+++ mime-support python python-minimal python2.4 python2.4-minimal
Install Apache and mod_python
# apt-get install apache2 libapache2-mod-python
+++ apache2 apache2-mpm-worker apache2-utils apache2.2-common libapache2-mod-python libapr1 libaprutil1 libexpat1 libmagic1 libpcre3 libpq4 libsqlite3-0 python-central
How to use Django with mod_python
http://www.djangoproject.com/documentation/modpython/
Django requires Apache 2.x and mod_python 3.x, and you should use Apache's prefork MPM, as opposed to the worker MPM.
# apt-get install apache2-mpm-prefork
--- apache2-mpm-worker
+++ apache2-mpm-prefork
Get your database running
Django works with PostgreSQL (recommended), MySQL and SQLite.
# apt-get install postgresql-8.1
+++ openssl postgresql-8.1 postgresql-client-8.1 postgresql-client-common postgresql-common ssl-cert
แก้ปัญหาการจัดเรียงภาษาไทยของ postgresql
ตรวจ locales ให้มีภาษาไทย
# dpkg-reconfigure locales
<<<--- (*) th_TH TIS-620
<<<--- (*) th_TH.UTF-8 UTF-8
inintdb ใหม่ให้เรียงตามภาษาไทย โดยจะสร้างไดเรคทอรี่ของข้อมูลใหม่ ให้อยู่ที่ /server1/var/lib/postgresql/8.1/main
# /etc/init.d/postgresql-8.1 stop
# mkdir -p /server1/var/lib/postgresql/8.1/main
# chown -R postgres:postgres /server1/var/lib/postgresql
# su postgres
$ /usr/lib/postgresql/8.1/bin/initdb -D /server1/var/lib/postgresql/8.1/main --locale=th_TH.UTF-8 --pgdata=/server1/var/lib/postgresql/8.1/main
$ cd /server1/var/lib/postgresql/8.1/main
$ ln -sf /etc/postgresql-common/root.crt .
$ ln -sf /etc/ssl/certs/ssl-cert-snakeoil.pem server.crt
$ ln -sf /etc/ssl/private/ssl-cert-snakeoil.key server.key
$ exit
# cd /etc/postgresql/8.1/main
# rm pgdata
# ln -sf /server1/var/lib/postgresql-8.1/main pgdata
# /etc/init.d/postgresql-8.1 start
ปรับให้ผู้ใช้ในระบบสามารถเข้ามาใช้งานโดยใช้รหัสผ่านของระบบ
# vi /etc/postgresql/8.1/main/pg_hba.conf
... # TYPE DATABASE USER CIDR-ADDRESS METHOD host all all 192.168.1.0/24 md5 ...
สร้างผู้คุมฐานข้อมูล
# su postgres
$ psql template1
template1=# CREATE USER superx SUPERUSER PASSWORD 'superx';
template1=# \q
$ exit
ติดตั้ง phppgadmin
# apt-get install phppgadmin
+++ libapache2-mod-php4 libzzip-0-12 php4-common php4-pgsql phppgadmin wwwconfig-common
# dpkg-reconfigure phppgadmin
Which web server would you like to reconfigure automatically?
<<<--- Apache2
# vi /etc/apache2/conf.d/phppgadmin
# deny from all allow from all
# /etc/init.d/apache2 restart
If you're using PostgreSQL, you'll need the psycopg package
# apt-get install python-psycopg python-psycopg2
+++ python-egenix-mxdatetime python-egenix-mxtools python-psycopg python-psycopg2
Install the Django code
Download Django-0.95.tar.gz from our download page.
# cd /usr/src
# tar xfz Django-0.95.tar.gz
# cd Django-0.95
Note that the last command will automatically download and install setuptools if you don't already have it installed. This requires a working Internet connection.
# apt-get install python-setuptools
+++ python-setuptools
# python setup.py install
เสร็จ Django
เรียน Django
http://www.sitepoint.com/article/build-to-do-list-30-minute
จะสร้างไดเรคทอรี่ของเว็บ โดยให้ webmaster เป็นเจ้าของ
# useradd -m -g www-data webmaster
# su webmaster
$ cd
$ mkdir django
$ cd django
Diving In
จะสร้างโปรเจคต์ ชื่อ gtd
$ django-admin.py startproject gtd
$ cd gtd
รันเซิร์ฟเวอร์ที่พอร์ต 8000 ไอพี 192.168.1.5
$ python manage.py runserver 192.168.1.5:8000
ทดสอบโดย เอาบราวเซอร์ไปที่ http://192.168.1.5:8000/
หยุดเซิร์ฟเวอร์ด้วย Ctrl-C
จะสร้างแอปพลิเกชั่น todo
$ python manage.py startapp todo
$ cd todo
$ vi models.py
class List(models.Model): title = models.CharField(maxlength=250, unique=True) def __str__(self): return self.title class Meta: ordering = ['title'] class Admin: pass import datetime PRIORITY_CHOICES = ( (1, 'Low'), (2, 'Normal'), (3, 'High'), ) class Item(models.Model): title = models.CharField(maxlength=250) created_date = models.DateTimeField(default=datetime.datetime.now) priority = models.IntegerField(choices=PRIORITY_CHOICES, default=2) completed = models.BooleanField(default=False) todo_list = models.ForeignKey(List) def __str__(self): return self.title class Meta: ordering = ['-priority', 'title'] class Admin: pass
$ cd ..
$ su postgres
postgres@server1$ psql template1
template1=# CREATE DATABASE "django" WITH ENCODING='UTF8';
template1=# \q
postgres@server1$ exit
$ vi settings.py
... DATABASE_ENGINE = 'postgresql' DATABASE_NAME = 'django' DATABASE_USER = 'USER1' DATABASE_PASSWORD = 'USER1PASSWORD' ... DATABASE_PORT = '5432' ... TIME_ZONE = 'Asia/Bangkok' ... INSTALLED_APPS = ( 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'gtd.todo', )
$ python manage.py syncdb
You just installed Django's auth system, which means you don't have any superusers defined.
Would you like to create one now? (yes/no):
<<<--- yes
Username (Leave blank to use 'webmaster'):
<<<--- {DEFAULT}
E-mail address:
<<<--- webmaster@example.com
Password:
<<<--- {WEBMASTER-PASSWORD}
Password (again):
<<<--- {WEBMASTER-PASSWORD}
$ vi settings.py
... INSTALLED_APPS = ( 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'gtd.todo', 'django.contrib.admin', )
$ vi urls.py
... (r'^admin/', include('django.contrib.admin.urls')), ...
$ python manage.py syncdb
เริ่มรัน
$ python manage.py runserver 192.168.1.5:8000
เอาบราวเซอร์ไปที่ http://192.168.1.5:8000/admin
Username:
<<<--- webmaster
Password:
<<<--- {WEBMASTER-PASSWORD}
ลองเพิ่มผู้ใช้และกรุ๊ปดู
Deliving into Views
$ cd todo
$ vi views.py
... from django.shortcuts import render_to_response from gtd.todo.models import List def status_report(request): todo_listing = [] for todo_list in List.objects.all(): todo_dict = {} todo_dict['list_object'] = todo_list todo_dict['item_count'] = todo_list.item_set.count() todo_dict['items_complete'] = todo_list.item_set.filter(completed=True).count() todo_dict['percent_complete'] = int(float(todo_dict['items_complete']) / todo_dict['item_count'] * 100) todo_listing.append(todo_dict) return render_to_response('status_report.html', { 'todo_listing': todo_listing })
Writing the Template
$ mkdir templates
$ cd templates
$ vi status_report.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>To-do List Status Report</title> </head> <body> <h1>To-do list status report</h1> {% for list_dict in todo_listing %} <h2>{{ list_dict.list_object.title }}</h2> <ul> <li>Number of items: {{ list_dict.item_count }}</li> <li>Number completed: {{ list_dict.items_complete }} ({{ list_dict.percent_complete }}%)</li> </ul> {% endfor %} </body> </html>
Making it Work
$ cd ../..
$ vi settings.py
... TEMPLATE_DIRS = ( # Put strings here, like "/home/html/django_templates". # Always use forward slashes, even on Windows. '/home/webmaster/django/gtd/todo/templates', )
$ vi urls.py
... urlpatterns = patterns('', # Example: # (r'^gtd/', include('gtd.apps.foo.urls.foo')), # Uncomment this for admin: (r'^admin/', include('django.contrib.admin.urls')), (r'^report/$', 'gtd.todo.views.status_report'), )
$ python manage.py runserver 192.168.1.5:8000
ลองดูที่บราวเซอร์ http://192.168.1.5:8000/report
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