As mentioned in a recent article[^1^](#fn1){#fnref1 .footnote-ref role=”doc-noteref”}, I’ve been diving deep into Google Analytics lately while working on a few client projects. We’re aiming to use much more of the features of Google Analytics and have been hitting some roadblocks with the development versus production application environments. Once you begin to dive into event tracking and AJAX-driven goal conversions, relying on just the sample code that Google Analytics provides you is going to result in you looking at a handful of JavaScript errors.
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another example from the firebug javascript console…
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We see JavaScript errors like this because we don’t load the google analytics code in our development environments. As you can see, we are only loading this in our production environment.
<% if RAILS_ENV 'production' -%> <!--// Google Analytics //-->
<script type="text/javascript"> var gaJsHost = (("https:"
document.location.protocol) ? “https://ssl.” : “http://www.”);
document.write(unescape(“%3Cscript src=’” + gaJsHost +
“google-analytics.com/ga.js’ type=’text/javascript’%3E%3C/script%3E”));
<% end -%>\
To track an event with Google Analytics, you’d need to trigger something like:
pageTracker._trackEvent(‘Button’, ‘Click’, ‘Get in touch’);{lang=”ruby”}\
As you can see from our code earlier, in development, the pageTracker
variable isn’t defined and that’s why we’re getting those JS errors. We
also don’t want to add conditionals everywhere in our application to
check if we’re in development or production environment.. as that’d just
make our views uglier than they need to be. So, I decided that I’d
create a proxy class in JavaScript that would allow us to trigger
_trackEvent() and _trackPageview() and handle it appropriately.
This class works with the following logic:
- if google analytics is loaded, pass the parameters to the real
pageTracker - if google analytics is NOT loaded, output the information to
console.log()for debugging purposes
For example, on a gallery on our web site… we track when people navigate next and/or previous through the photos. In our development environment, I can watch the JavaScript console output the following:
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And in our production environment, we can see that this was sent to Google Analytics.
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We’re able to do this by initializing the GoogleAnalyticsProxy class and calling these functions through it. For example:
_gap = new GoogleAnalyticsProxy();{lang=”ruby”}
_gap._trackEvent(‘Video’, ‘Play’, ‘Homepage video’);{lang=”ruby”}
_gap._trackEvent(‘Video’, ‘Pause’, ‘Homepage video’);{lang=”ruby”}
_gap._trackEvent(‘Button’, ‘Click’, ‘Call to action X’);{lang=”ruby”}\
You’ll see that we’re just calling _gap versus pageTracker. We then
replace all the instances of pageTracker (except where it is defined in
the google analytics code block they provide you). You’ll find this
located near the bottom of our application.html.erb file.
<% if RAILS_ENV 'production' -%> <!--// Google Analytics //-->
<script type="text/javascript"> var gaJsHost = (("https:"
document.location.protocol) ? “https://ssl.” : “http://www.”);
document.write(unescape(“%3Cscript src=’” + gaJsHost +
“google-analytics.com/ga.js’ type=’text/javascript’%3E%3C/script%3E”));
<% end -%>
We now have _gap available throughout our project and can call
_trackEvent() and _trackPageview() with it. Note: You can use any JS
variable name that you want, _gap is just what I went with.
Get GoogleAnalyticsProxy
I’ve gone ahead and tossed this small JavaScript class (known as GoogleAnalyticsProxy) on Github for your enjoyment. I have some more articles in the works that will show you some tips for how to make the most of Google Analytics. If you have any questions and/or ideas for related article topics, don’t hesitate to let me know.
- ::: {#fn1} Tracking AJAX-driven events in Ruby on Rails for Google Analytics conversion goals↩︎{.footnote-back role=”doc-backlink”} :::
