My app consists of 2 pieces, 1 private management and 1 payment gateway, which are deployed to different urls:
https://manage-my-app.com
https://pay-my-app.com
They need to be able to live on 1 server, however, with the domains are managed in the same vhost file.
I want to configure Google Analytics to run separately on each of these urls, but to store as much of the configuration in Environment Variables as possible (conforming with 12Factor).
I want to avoid using App Environments (dev, staging, production) to determine when to load GA, and I want to try to use as few variables as possible.
I'm thinking of using:
# manage-my-app.com vhost config
SetEnv GA_CODE something
# pay-my-app.com vhost config
SetEnv GA_CODE somethingelse
Then in my code, using:
<?php if ($ga = getenv('GA_CODE')) : ?>
// do google analytics here
<?php endif; ?>
I think this covers all my bases:
- The config is in the ENV
- Each deployment has its own analytics code
- Each deployment only has to maintain its own string
- Deploys with no analytics (dev, staging, etc) don't include the javascript
BUT I am worried it's not extensible enough.
For example:
How should I modify my approach if I need special analytics code or config for the payment gateway to conform to our privacy policy?
I want to avoid 2 paths, but I cannot rely on the url if 2 paths is the only way:
<?php if ($ga = getenv('GA_CODE')) : ?>
<?php if ($url == 'pay-my-app.com') : ?>
<!-- do it one way -->
<?php else : ?>
<!-- do it some other way -->
<?php endif; ?>
<?php endif; ?>