GA (or other javascript apps) configured and called in a 12Factor-y way

问题

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; ?>

来源：https://stackoverflow.com/questions/21247024/ga-or-other-javascript-apps-configured-and-called-in-a-12factor-y-way

标签

javascript

php

google-analytics

12factor