Pass coupon code from pricing table view to subscription form

Hi,

When a user comes to the pricing table view with a coupon code in the URL, I would like this to get passed on to the subscription form page. For example I give the user a link like: index.php?option=com_osmembership&view=plans&layout=pricingtableflat&id=0&coupon_code=MYCODE
The coupon_code should be appended to all buttons on the page that take you to the subscription form. I know the subscription form already supports the coupon_code parameter so there is no change required there.

I'm currently doing this with a template override but it would be a nice feature to have natively. Here is the code I added:
/components/com_osmembership/view/common/tmpl/pricingtable_flat_plans.php  

Hi Pete

This is a special use-case, so override like you did is needed. This is something we won't add to the core package

Just one minor thing, on that code, JFactory should be replaced with it's namespaced class Factory to make sure it works well with future releases of Joomla

Regards,

Tuan