Group subscriptions should have no shipping cost

[brylie]

When checking out with group subscriptions, there should be no shipping cost.

[brylie]

Related SO question: https://stackoverflow.com/questions/45846762/variable-shipping-cost-based-on-product-type-in-drupal-commerce

[brylie]

One sticking point in this issue is related to calculating shipping costs.

The group subscriptions share the shopping cart with book orders. The group subscription should have no shipping cost, but is being counted during the shipping cost calculation.

I have experimented quite a bit with shipping calculation rules, but cannot figure out how to calculate shipping cost based on product type. After researching and watching several videos, I found the following discussion/issues:

• https://drupal.stackexchange.com/questions/52655/drupal-commerce-separate-shipping-for-different-products

• https://www.drupal.org/node/2905884

• https://drupal.stackexchange.com/questions/244819/dont-calculate-shipping-for-specific-item

  • Conditional Rules module
    • https://www.drupal.org/project/rules_conditional

I tried Conditional Rules, but got a 404 error when adding a new 'if' condition to the Drupal Commerce calculation rule.

[brylie]

I opened another issue with Drupal Commerce, asking for the rule to be added to Commerce core:

https://www.drupal.org/node/2905893#comment-12242166