Difference between revisions of "Django"

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==installing django in debian jessie with python3, mysql, apache2 and mod-wsgi==
+
=installing django in debian jessie with python3, mysql, apache2 and mod-wsgi directly=
  
Packages:
+
==Packages==
 
  aptitude install python3-django python3 libapache2-mod-wsgi-py3 python3-mysql.connector apache2
 
  aptitude install python3-django python3 libapache2-mod-wsgi-py3 python3-mysql.connector apache2
  
Line 8: Line 8:
 
  aptitude install mysql-server
 
  aptitude install mysql-server
  
Make sure the wsdi module is enabled"
+
Make sure the wsgi module is enabled
  
 
  dpkg-reconfigure libapache2-mod-wsgi-py3
 
  dpkg-reconfigure libapache2-mod-wsgi-py3
  
Create workspace:
+
==Create workspace, in my case instance zealot is installed in /var/django/zealot==
  
 
  mkdir -p /var/django && cd /var/django
 
  mkdir -p /var/django && cd /var/django
 
  /usr/lib/python3/dist-packages/django/bin/django-admin.py startproject zealot .
 
  /usr/lib/python3/dist-packages/django/bin/django-admin.py startproject zealot .
 +
 +
==Create your database (log into mysql first as a user that can do this)==
 +
 +
CREATE DATABASE database;
 +
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
 +
GRANT ALL ON database.* TO 'newuser'@'localhost';
 +
 +
(obviously these are placeholder values, use real names and a secure password!)
  
 
==example apache config==
 
==example apache config==
  
Below apache config works with python 3 and the debian django repository (specifically, the static alias is on a separate location). Outside of that in my example the django instance zealot is stored in /var/django/zealot.
+
Below apache config works with python 3 and the debian django repository (specifically, the static alias is on a separate location). Outside of that in my example the django instance named zealot is stored in /var/django/zealot.
 +
Apache config file location in debian:
 +
/etc/apache2/sites-available/000-default.conf
 +
 
 +
Create a symlink to redirect to the distro provided static files:
 +
 
 +
mkdir /var/django/media/
 +
cd /var/django/media/
 +
ln -s /usr/share/python-django-common/django/contrib/admin/static/admin
  
 
<pre><VirtualHost *:80>
 
<pre><VirtualHost *:80>
 
ServerName fuego.lippmann.us
 
ServerName fuego.lippmann.us
 
Alias /media/ /var/django/media/
 
Alias /media/ /var/django/media/
Alias /static/ /usr/share/python-django-common/django/contrib/admin/static/
+
Alias /static/ /var/django/static/
  
 
<Directory /var/django/static>
 
<Directory /var/django/static>
Line 46: Line 62:
 
</VirtualHost></pre>
 
</VirtualHost></pre>
  
 
+
==example settings.py==
==example project_dir settings.py==
+
In my example /var/django/zealot holds this file and again the project is named zealot so settings match that. Adjust the database and other parameters (timezone, domain, etc.) according to your own environment.
In my example /var/django/zealot holds this file. Adjust the database and other parameters (timezone, domain, etc.) according to your own environment .
+
  
 
<pre>import os
 
<pre>import os
Line 94: Line 109:
 
USE_TZ = True
 
USE_TZ = True
 
STATIC_URL = '/static/'</pre>
 
STATIC_URL = '/static/'</pre>
 +
 +
=installing django in debian jessie with python, mysql, apache2 and mod-wsgi inside a virtualenv=
 +
 +
==Packages==
 +
aptitude install python-virtualenv python libapache2-mod-wsgi apache2 python-pip virtualenv
 +
 +
==create and activate the virtualenv==
 +
 +
We create a virtualenv repository in /var, and create a virtualenv there specifically for our django instance.
 +
Then we initialize it.
 +
 +
mkdir -p /var/virtualenv/
 +
cd /var/virtualenv/
 +
virtualenv  django
 +
source /var/virtualenv/django/bin/activate
 +
 +
==update pip and then install django==
 +
/var/virtualenv/django/bin/pip install -U pip
 +
/var/virtualenv/django/bin/pip install django
 +
 +
django requires the right version of mysql-connector-python. It's a nightmare to find it, but below steps currently work:
 +
aptitude install git
 +
/var/virtualenv/django/bin/pip install --egg --allow-all-external git+git://github.com/multiplay/mysql-connector-python
 +
 +
==Create workspace, in my case instance zealot is installed in /var/virtualenv/django/zealot==
 +
 +
cd /var/virtualenv/django && bin/django-admin.py startproject zealot
 +
 +
==add some optional packages==
 +
 +
/var/virtualenv/django/bin/pip install termcolor
 +
/var/virtualenv/django/bin/pip install pytz
 +
/var/virtualenv/django/bin/pip install prettytable
 +
 +
=model.py tricks=
 +
==enforce uniqueness of multiple fields in a model table==
 +
 +
class SomeModel(models.Model):
 +
    class Meta:
 +
        unique_together = (("field1", "field2"),)

Latest revision as of 05:30, 10 January 2016

installing django in debian jessie with python3, mysql, apache2 and mod-wsgi directly

Packages

aptitude install python3-django python3 libapache2-mod-wsgi-py3 python3-mysql.connector apache2

(optionally add a local mysql server if you need one locally)

aptitude install mysql-server

Make sure the wsgi module is enabled

dpkg-reconfigure libapache2-mod-wsgi-py3

Create workspace, in my case instance zealot is installed in /var/django/zealot

mkdir -p /var/django && cd /var/django
/usr/lib/python3/dist-packages/django/bin/django-admin.py startproject zealot .

Create your database (log into mysql first as a user that can do this)

CREATE DATABASE database;
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
GRANT ALL ON database.* TO 'newuser'@'localhost';

(obviously these are placeholder values, use real names and a secure password!)

example apache config

Below apache config works with python 3 and the debian django repository (specifically, the static alias is on a separate location). Outside of that in my example the django instance named zealot is stored in /var/django/zealot. Apache config file location in debian:

/etc/apache2/sites-available/000-default.conf

Create a symlink to redirect to the distro provided static files:

mkdir /var/django/media/ 
cd /var/django/media/ 
ln -s /usr/share/python-django-common/django/contrib/admin/static/admin
<VirtualHost *:80>
ServerName fuego.lippmann.us
Alias /media/ /var/django/media/
Alias /static/ /var/django/static/

<Directory /var/django/static>
Require all granted
</Directory>

<Directory /var/django/media>
Require all granted
</Directory>

 WSGIDaemonProcess zealot python-path=/var/django:/usr/lib/python3.4
 WSGIProcessGroup zealot
 WSGIScriptAlias / /var/django/zealot/wsgi.py

 <Directory /var/django/zealot/>
 <Files wsgi.py>
 Require all granted
 </Files>
 </Directory>

</VirtualHost>

example settings.py

In my example /var/django/zealot holds this file and again the project is named zealot so settings match that. Adjust the database and other parameters (timezone, domain, etc.) according to your own environment.

import os
BASE_DIR = os.path.dirname(os.path.dirname(__file__))
SECRET_KEY = 'key'
DEBUG = False
TEMPLATE_DEBUG = False
ALLOWED_HOSTS = [
            '.lippmann.us.',  # Allow domain and subdomains
        ]
CSRF_COOKIE_DOMAIN = ".lippmann.us"
INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
)
MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
)
ROOT_URLCONF = 'zealot.urls'
WSGI_APPLICATION = 'zealot.wsgi.application'
DATABASES = {
    'default': {
        'ENGINE': 'mysql.connector.django',
        'NAME': 'zealot',
        'USER': 'user',
        'PASSWORD': 'password',
        'HOST': 'localhost',
        'PORT': '3306',
    }
}
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'America/Los_Angeles'
USE_I18N = True
USE_L10N = True
USE_TZ = True
STATIC_URL = '/static/'

installing django in debian jessie with python, mysql, apache2 and mod-wsgi inside a virtualenv

Packages

aptitude install python-virtualenv python libapache2-mod-wsgi apache2 python-pip virtualenv

create and activate the virtualenv

We create a virtualenv repository in /var, and create a virtualenv there specifically for our django instance. Then we initialize it.

mkdir -p /var/virtualenv/
cd /var/virtualenv/
virtualenv  django
source /var/virtualenv/django/bin/activate

update pip and then install django

/var/virtualenv/django/bin/pip install -U pip
/var/virtualenv/django/bin/pip install django

django requires the right version of mysql-connector-python. It's a nightmare to find it, but below steps currently work:

aptitude install git
/var/virtualenv/django/bin/pip install --egg --allow-all-external git+git://github.com/multiplay/mysql-connector-python

Create workspace, in my case instance zealot is installed in /var/virtualenv/django/zealot

cd /var/virtualenv/django && bin/django-admin.py startproject zealot

add some optional packages

/var/virtualenv/django/bin/pip install termcolor
/var/virtualenv/django/bin/pip install pytz
/var/virtualenv/django/bin/pip install prettytable

model.py tricks

enforce uniqueness of multiple fields in a model table

class SomeModel(models.Model):
   class Meta:
       unique_together = (("field1", "field2"),)