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Dring 93 - Ubuntu 10.04

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1 - Database creation

2 - Virtualenv installation

3 - Settings

4 - Database synchronization

5 - .htaccess files

6 - WSGI script file

1 - Database creation

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Create a database in Postgres:

  createdb -U username -W -h 127.0.0.1 d

Access to te database in Postgres:

  psql -U username -W -h 127.0.0.1 dbname

\d to view the list of all relations

2 - Virtualenv installation

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Run the bootstrap script generator:

  python create_python_env.py 

Run project-boot.py this way:

  python hg/dring93/sbin/virtualenv/project-boot.py --no-site-packages --setuptools --unzip-setuptools --type-install=local --ignore-packages=MYSQL path/to/env/Env

To activate the environment:

  source path/to/env/Env/bin/activate

3 - Settings

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Enter the db settings in dring93/web/dring93/config.py:

DATABASES = {

    'default': {

        'ENGINE': 'django.db.backends.postgresql_psycopg2',

        'NAME': 'dbDring',

        'USER': 'iriuser', 

        'PASSWORD': 'iriuser',

        'HOST': 'localhost',

        'PORT': '5432',

    }

}

Change the URL paths:

BASE_URL = '/dev/~user/dring93/'

WEB_URL = 'http://www.iri.centrepompidou.fr/'

In your public_html, create a symbolic link that points to the application:

  ln -s path/to/project/dring93 dring93

4 - Database synchronization

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Synchronize the database, in dring93/web/dring93:

  python manage.py syncdb

5 - .htaccess files

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Write dring93/web/.htaccess:

# Permanent redirection to dring93/franculture

RedirectMatch permanent /~user/dring93/?$ /~user/dring93/dring93

Write dring93/web/dring93/.htaccess:

# Set environmental variables used in the wsgi file

SetEnv DJANGO_SETTINGS_MODULE dring93.settings

SetEnv PY_USE_XMLPLUS true

SetEnv PROJECT_PATH /path/to/project/dring93/web

SetEnv PYTHON_PATH /path/to/virtual/environment/Env/lib/python2.6/site-packages

Options ExecCGI FollowSymLinks

SetHandler wsgi-script

RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f

RewriteRule ^(.*)$ /path/to/wsgiscript/modwsgi.wsgi/$1 [QSA,PT,L]

# html cache options

Header set Pragma "no-cache"

Header set Cache-Control "no-cache"

Header set Expires "-1"

6 - WSGI script file

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Write the WSGI file modwsgi.wsgi

import os, sys, site

def application(environ, start_response):

        os.environ['DJANGO_SETTINGS_MODULE'] = environ['DJANGO_SETTINGS_MODULE']

        os.environ['PY_USE_XMLPLUS'] = environ['PY_USE_XMLPLUS']

        sys.path.append(environ['PROJECT_PATH'])

        site.addsitedir(environ['PYTHON_PATH'])

        import django.core.handlers.wsgi

        _application = django.core.handlers.wsgi.WSGIHandler()

        return _application(environ, start_response)

Notes:

- The 'environ' argument is unrelated to the 'os.environ' argument. It catches the variables that were defined with 'SetEnv' in the .htaccess file.

- 'sys.path.append' adds the project path to the PYTHONPATH

- 'site.addsitedir' activates the virtual environment