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sven django project

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sven
====

Sven. An ongoing project on text analysis which integrates Pattern for python.

* * *

Installation
===

We tested SVEN on ubuntu systems with Python 2.7 and django 1.4.3, under apache2 server with wsgi module.
To install virtualenv and virtualenv wrapper from pip, follow the
[online documentation](http://virtualenvwrapper.readthedocs.org/en/latest/).

**Git!**
let's assume `/path/to/` as the parent path for sven installation

$ cd /path/to/
	$ git clone https://github.com/densitydesign/sven.git

Make sure that `settings.py` file is located at `/path/to/sven/settings.py`

$ cd /pat/to/sven
	$ cp settings.py.SAMPLE settings.py

Create a sven dedicated virtualenv
---
Once virtualenvwrapper installed, create a virtualenv directory `sven.local`, activate the virtualenv and install the requirements:

$ source /usr/local/bin/virtualenvwrapper.sh
	$ mkvirtualenv sven.local
	$ workon sven.local
	(sven.local)$ deactivate

Proceed to lxml installation (required for docx and unicodecsv modules) troubleshooting on ubuntu. The dev module for your python version python2.x-dev should be installed.

$ sudo apt-get install python2.7-dev
	$ sudo apt-get install libxml2-dev
	$ sudo apt-get install libxslt1-dev
	$
	$ workon sven.local
	(sven.local)$ pip install -r requirements.txt

Other external dependencies, python modules (available as pip packages):

[python-docx](https://github.com/mikemaccana/python-docx) to enable docx to txt conversion
[python-unicodecsv](https://github.com/jdunck/python-unicodecsv) to enable unicodecsv download of segments

known issues on MAC os(pip and MAMP)
---
WHen used with mysql databases, python needs support of MySQLdb module. Normally doing

(sven.local)$ pip install mysql-python

solves the problem. Otherwise try:
EnvironmentError: mysql_config not found
	
	$ export PATH="$PATH:/Applications/MAMP/Library/bin"
	
2.

Configure virtualhost for apache
---
You can use the `virtualhost.SAMPLE` file to enable sven site for apache server.
	
	$ cd /path/to/sven
	$ sudo cp virtualhost.SAMPLE /etc/apache2/sites-available/sven
	
WSGIScriptAlias directive should point to `/path/to/sven/sven.wsgi`.

$ sudo a2ensite sven
	$ sudo service apache2 reload

Sven site will be available under `http://sven.local` (your ServerName directive).

Configure wsgi
---
You can use the `sven.wsgi.SAMPLE` file: rename it to `sven.wsgi`.
Make the WSGIScriptAlias directive in your virtualhost point to this file.

Change `/path/to/` according to your virtualenv location, e.g.
	             site.addsitedir('/home/daniele/.virtualenvs/sven.local/lib/python2.7/site-packages')

Folder permissions
---
Create a log file for ANTA processes (sven scripts for Pattern library) and make it writable for the apache user.

$ cd /path/to/sven
	$ mkdir logs
	$ touch logs/anta.log
	$ chown -hR your-user:www-data logs
	$ chmod 0775 -R logs
	$ mkdir media
	$ chown your-user:www-data media
	$ chmod 0775 media

The directory `media` will host various documents corpora (one for each folder).
Configure the `MEDIA_ROOT` directive inside the `settings.py` file accordingly.

Configure settings.py file
---
You can use the settings.SAMPLE file and modify variables according to your configuration. Make sure that sven.anta and sven.core appear under installed apps.

...
	DATABASES = {
	    'default': {
	        'ENGINE': 'django.db.backends.sqlite3', 
	        'NAME': '/path/to/sven/sven.db',    
	...
	INSTALLED_APPS = (
    ...
    	# 'django.contrib.admindocs',
    	'sven.anta',
    	'sven.core'
	)
	...

Start your engines
---
Activate your virtualenv if it is not yet activated:

$ source /usr/local/bin/virtualenvwrapper.sh
	$ workon sven.local
	$ cd /path/to/sven

Then:

$ python manage.py syncdb

Cross your fingers and go to your sven url...

Create a Corpus
---
A **corpus** is a collection of documents. Standard fidf text analysis will be performed on the whole corpus.

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