piwik_analytics is a Gem for Ruby on Rails 3.x. After installing Matomo (Piwik) on your server and creating a website, you get a JavaScript tracking tag that you have to include in your website. When working with Rails the tracking tag will most likely be embedded in the application.html.erb view. It is not very convenient to include the tracking tag in your views.

The piwik_analytics gem provides an easy way to include Matomo (Piwik) into your application without messing up your view templates.


Add the piwik_analytics Gem to your Gemfile:

gem 'piwik_analytics', '~> 1.0.1'

Do not forget to run

bundle install

! Then run the generator:

rails g piwik_analytics:install

This will install a piwik.yml configuration file into the config directory of your application.


Open up config/piwik.yml and edit the settings. Each setting is described in the config file itself.

# Configuration:
# disabled
#   false if tracking tag should be shown
# use_async
#   Set to true if you want to use asynchronous tracking
# url
#   The url of your piwik instance (e.g. localhost/piwik/
# id_site
#   The id of your website inside Matomo
    id_site: 1
    url: piwik-production.example.com
    use_async: false
    disabled: false

    id_site: 1
    url: piwik-development.example.com
    disabled: true
    use_async: false

    id_site: 1
    url: localhost
    disabled: true
    use_async: false

As you can see, by default Matomo (Piwik) is only enabled in production mode. You can of course enable Matomo in the development or test environment by setting disabled: false. You will then need to fetch the site ID of the website you want to track from Matomo. Login to your Matomo Installation, go to “Settings” and click the “Websites” tab.

Matomo Site ID
Matomo Site ID

In this case the site ID is “1”. As a last step you need to set the URL of your Matomo (Piwik) installation. If your Matomo is hosted under http://example.com/piwik/ you need to set the URL to example.com/piwik (without the trailing slash).

Matomo (Piwik) supports an asynchronous tracking script since version 1.1. In case you want to use asynchronous tracking in your application, simply set use_async: true.


The gem provides a simple helper that outputs the tracking tag. Inside your application.html.erb (or haml, slim) you can simply add the following snippet just before the closing body tag.

<%= piwik_tracking_tag %>

Make sure you have disabled: false when you test the gem.

Get Support for piwik_analytics

To get support or for further information:

Fabian Becker

Fabian is a core team developer and has contributed dozens of improvements to code, user interface, new features and also developed the piwik_analytics gem for Ruby. He is working as a PhD student on evolutionary algorithms in Germany.

Any questions?

Many answers and more information about Matomo you can find here:

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