Google Tag Manager E-commerce tracking for OpenCart 2.x

note: developed on version 2.3.2, other versions can need some edits - fell free to contribute!

Installation

1. Requiring installed vQmod because vQmod doesn't support installing via composer itself.
2. composer require burdapraha/oc_gtm_ecommerce
3. composer require sasedev/composer-plugin-filecopier for files manipulating
4. Add this code to your composer.json project file, extra section:

    "extra": {
        "filescopier": [
            {
                "source": "vendor/burdapraha/oc_gtm_ecommerce/upload",
                "destination": "upload",
                "debug": "true"
            }
        ]
    }    

It will move vQmod xml file to correct folder.

5. setup your GTM (some tutorial here)

6. optionally you can add row to your .gitignore file with path to gtm_ecommerce.xml (example: upload/vqmod/xml/gtm_ecommerce.xml)
7. celebrate!