On a current site in development I am using Ubercart to provide a renewable subscription service. To make the user experience clean, I wanted to protect the user from going 'shopping' to add their subscription. To do this I decided to use a rule to add the product to the user cart when the user is created by an administrator or when the subscription is cancelled or fails payment. I tried the Ubercart Rules module, but this is mainly for dealing with orders and not carts, and did not contain the needed add to cart rule.

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