This document outlines how to implement user limits for a paid app with multiple tiers (e.g. free and paid). If you have a simple paid app with no tiers, you can jump straight to the Simple Paid App example.

With the simple paid app example under your belt, we can move to a more complex scenario. In this example, the Acme app comes in three different versions:

• Acme Home - free for up to 10 users
• Acme Business - $50 / year for up to 50 users
• Acme Enterprise - $200 / year for over 50 users

In your app development tree, four different apps are going to be created - one for each of the above versions along with an app to hold some common libraries and assets.

• acme
• acme_home
• acme_business
• acme_enterprise

Each of the Acme apps will need to implement a Subscription Class, so a generic Acme_Subscription_Engine library is used as a base class. It's nearly identical to the simple paid app example.

• Acme Subscription Engine

Each of the Acme tiers then extend the engine library (full code here), so the pertinent part of the Acme_Home_Subscription.php class looks like:

    public function __construct()
    {
        clearos_profile(__METHOD__, __LINE__);
 
        parent::__construct(lang('acme_home_app_name'));
    }

You can certainly shuffle things around or override the get_info() method… that is up to you.

search?q=clearos%2C%20clearos%20content%2C%20tutorial%2C%20dev%2C%20framework%2C%20maintainer_dloper&btnI=lucky