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Thu, 03/11/2010 - 21:26
Francois
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I'm trying to override the theming of the "Add to Cart" form on product nodes. I've isolated the function (uc_product_add_to_cart_form), and made a small change to test whether I've got the right one; which worked. Now I've copied the function to my template.php, renamed it to theme_uc_product_add_to_cart_form and it doesn't work?

I've emptied my cache, still no change. Am I doing something wrong?

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Wed, 05/05/2010 - 17:49
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sipy
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example_form_alter

I tried to use a bit different approach for this but basically trying to do exactly same thing.

I have own custom module and there I have implemented function called: my example _form_alter "example" being my module name.
then I have switch - case where I check the form ID and this works for most of the form, but not uc_product_add_to_cart_from as formID has nodeID added to it.

So If i use FormID uc_product_add_to_cart_from_2 where 2 is my products NodeID, it works, but that is not really generic solution Smiling

So not sure what would be best way to theme this form as standard doesn't seem to work.

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Wed, 05/05/2010 - 18:00
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sipy
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My solution

Ok, my solution was use 'if (strpos($form_id, 'uc_product_add_to_cart_form_') === 0)' in my example _form_alter -function.

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Thu, 10/14/2010 - 06:50
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strae
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Re: Add to Cart Theme Override

Ubercats seem to add the node id (and even a counter, in case you have many form of the same product in the same page, for example if you use a lot of views..could happen).

I dont know about theme function, but as sipy suggested i guess the simpliest way is to use a small custom module, that will look like (lets say the module is named 'foo'):

/*
* Implementation of hook_form_alter
* */
function foo_form_alter(&$form, &$form_state, $form_id){
    switch($form_id){
        case 'blog_node_form':
            /*
             * Here you can alter a Blog node form.. its just an example.
             * */
        break;
        case stristr($form_id, 'uc_product_add_to_cart_form'): // As said, the form id for this kind of form is dynamic.
            /*
             * Ubercart do some fancy stuff before this function has been invoked, there
             * is no sense to edit the form here.
             * Instead, we add a function callback to #after_build, that will be fired just before building the form.
             * (this callback is not indended to be uset outside this module, so for convention I add a
             * underscore in the begin of the name)
             * */
            $form['#after_build'][] = '_foo_uc_product_add_to_cart_form';
        break;
    }
}

function _foo_uc_product_add_to_cart_form($form, &$form_state){
    /*
     * Do whatever you want here, you ca edit/remove/add form elements...
     * just REMEMBER to return the $form, or you'll get a WSOD
     * */
    return $form;   
}

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