Is it possible to auto calculate shipping for Drupal 7? Is there a way to automate with coupons integrated as well? e.g. Free Shipping coupon.

Currently, if someone were to input a free shipping coupon, these are the necessary steps.

  1. Enter FREESHIPPING code
  2. Apply to order
  3. Update order
  4. Calculate shipping
  5. Select "Free Shipping" instead of "Paid Shipping"

I would like to exclude the last three steps as it's a pretty long process, and some customers might not know to click on Calculate Shipping after clicking Update order. They may think the coupon is broken. Anyway, applying a free shipping code is self explanatory. What I'm looking for is a way to automate the calculate shipping when users enter or change the delivery country when Apply to Order is clicked on the coupon pane.

Do you have any thought?

1 Answer 1


I'm still using D6 but I did something similar with jQuery:

Make a mymodule.module file that goes like this:


function mymodule_form_alter(&$form, &$form_state, $form_id){
  if ($form_id == 'uc_cart_checkout_form'){

    drupal_add_js(drupal_get_path('module', 'mymodule') . '/mymodule.js');


The format of your hook_form_alter may be different in 7, but there are tutorials all over the place for this. The point is that you use drupal_add_js (again, format may differ) to cram some javascript onto only the form with the ID you want - your checkout form.

Make a mymodule.info that goes like this:

name = Re-calculate Shipping
description = Use JavaScript to automatically click the Calculate Shipping button at checkout.
core = 6.x
dependencies[] = uc_quote
package = "Example.com custom modules"

(But you're core is 7.x - copy another module's info file.) And make a mymodule.js file that goes something like this:


   $("#edit-panes-billing-billing-zone").change(function() {

   $("#edit-panes-delivery-delivery-zone").change(function() {

Note that this just clicks the "calculate" button for the user, but I'm sure that you can work out how to use jQuery to click more things.

Imagine you have a drop-down select with the attribute id="cram". In your js file you would use $("#cram") to select anything with the ID "cram":

$("#cram").change(function() {

Sticking .change() on the end triggers anything between the brackets after .change when the #cram element changes, such as when a different fruit / rodent is selected. we're triggering a function here, and it is defined in-situ.

Sticking .click() on the end of a selector clicks the selected element.

Enjoy :)

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