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Installation

The easiest way to install a development environment is the provisioning method. If you don't want to run a virtual machine on your computer, follow the manual method.

Provisioning method

First download and install the latest versions of Vagrant and Ansible. Ubuntu and Mac OS X packages for Vagrant are available from the Vagrant download page. Ubuntu packages for Ansible can be installed from a PPA:

sudo add-apt-repository ppa:rquillo/ansible
sudo apt-get update
sudo apt-get install ansible

The only remaining step is to install the virtual machine:

vagrant up

This will automatically download and provision the virtual machine. After the command completes (it will take a while), you may SSH into your VM and start the Django server:

vagrant ssh
cd /vagrant
./manage.py runserver

Now you should be able to point your browser to the VM webserver at http://192.168.107.2/. Your project directory will be shared to the VM (in /vagrant), so any changes you make on your host machine will be reflected immediately to the VM.

Manual method

Dependencies

  • virtualenvwrapper
  • python-imaging
  • python-lxml
  • mysql-server or postgresql
  • python-mysqldb or python-psycopg2
  • gettext
  • libnode-less
  • python-numpy
  • subversion
  • git
  • opensp
  • tidy
  • libmalaga7

LESS and Coffee Script

If you don't have the libnode-less package, you need to install less manually. First we need to install node.js, fetch source package from http://nodejs.org/

Then you could install it with

./configure --prefix=/usr/local
make
make install

After that we can install less and coffee

# sudo npm install -g less
# sudo npm install -g coffee-script

Commands

First, you need to install the .deb dependencies. You can do that by running (as root) setup-root.sh.

If you just installed virtualenvwrapper, you need to logout and login for the new bash aliases to kick in.

virtualenv

$ mkvirtualenv kamu
$ workon kamu
$ python setup-site.py

Postgres

$ su - postgres
$ psql
CREATE USER kamu WITH PASSWORD 'kamu';
CREATE DATABASE kamu ENCODING 'utf-8' OWNER kamu;

In order to use Postgres, you need to set the right database backend in settings_local.py. You can do that by copying the DATABASES setting from settings.py and setting the value of ENGINE to 'django.db.backends.postgresql_psycopg2'.

MySQL

CREATE DATABASE kamu CHARACTER SET utf8 COLLATE utf8_swedish_ci;
CREATE USER 'kamu'@'localhost' IDENTIFIED BY 'kamu';
GRANT ALL PRIVILEGES ON kamu.* TO 'kamu'@'localhost';

If your existing database is in latin1, you can convert to utf-8 like this:

ALTER DATABASE kamu DEFAULT CHARACTER SET utf8 COLLATE utf8_swedish_ci;

echo "show tables" | ./manage.py dbshell > /tmp/tables
for a in $(cat /tmp/tables) ; do
	echo $a
	ALT="alter table $a convert to character set utf8 collate utf8_swedish_ci"
	echo $ALT | ./manage.py dbshell
done

The rest

First test your DB connection by:

$ python manage.py dbshell

If everything goes well, you're ready to download and install the initial contents:

$ ./setup-db.sh

$ django-admin.py compilemessages	# create the compiled locale files
$ django-admin.py index --rebuild	# generate the search index

Varnish configuration

During development, it can be useful to apply caching similar to production. First, install the varnish package. Modify /etc/default/varnish as follows:

DAEMON_OPTS="-a localhost:8100 \
         -T localhost:6082 \
         -f /etc/varnish/default.vcl \
         -S /etc/varnish/secret \
         -s malloc,256m"

Next, modify /etc/varnish/default.vcl:

backend default {
    .host = "127.0.0.1";
    .port = "8000";
}

sub vcl_recv {
    if (req.url ~ "^/api/") {
        remove req.http.cookie;
    }
}

sub vcl_fetch {
    if (req.url ~ "^/api/") {
        unset beresp.http.set-cookie;
    }
}

This will instruct Varnish to use your development server as the backend and disregard HTTP cookies when accessing the REST API.

You can now point your browser to http://localhost:8100/ for the cached version of the site.

Unit testing

To run the integrated unit tests make sure the access rights are set up for the test framework:

GRANT ALL PRIVILEGES ON `test_kamu`.* TO 'kamu'@'localhost';

Then just run

./manage.py test votes

or specify any of the other kamu applications instead of 'votes'.

If it's not important to run the tests on the mysql backend, you can speed up the tests considerably by setting up fast testing mode. This will use the sqlite3 backend keeping the DB in memory and use the faster syncdb method instead of south migration.

Add to settings_local.py:

FAST_TEST = True

Create an sqlite3 database and bring its tables synchronized to the django models. The test framework will clone and populate this database during test execution:

./manage.py syncdb
./manage.py migrate votes

optionally migrate also all other kamu applications besides 'votes' that you want to test.

Then run the tests normally as described above.

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