CheckBox Maximum Selection

[phoenix80]

Hi, I've setup products using Product Attributes/Optiona Values/Option names with multiple checkboxes, for example 30 different options, however I would like to limit the selection to 10, so that the customer can only select up to 10 products of the 30, is there a way to limit this? thanks in advance.

[Ajeh]

This is not an existing feature of Zen Cart at this time ... it is however on the list of fun things to do in a future release ...

[schoolboy]

Any update on this feature? I have a client who really needs it...

[DrByte]

The *way* to do it is to write the appropriate javascript and put it in your /includes/modules/pages/product_info/ folder as either a jscript_something.js or jscript_something.php file depending on whether you need PHP logic to dynamically build the javascript for the page.

[schoolboy]

Yes, I was looking at a .js something like:

function verify_checkboxes(form)
{
     var elements = form.elements;
     var boxcount = 0;

     for (var i in elements)
     {
           if (elements[i].type == 'checkbox' && elements[i].checked)
           {
                  if (++boxcount >= 5)
                  {
                        alert('You cannot check more than 5 boxes');
                        return false;
                  }
           }
     }
     return true;
}

But where (and how) do I add the following to the product_info page?

<form action="" method="post" onsubmit="return verify_checkboxes(this);">

.....

</form>

[DrByte]

tpl_product_info_display.php
Add your onsubmit parameter after the enctype parameter:

[FONT="Courier New"]<?php echo zen_draw_form('cart_quantity', zen_href_link(zen_get_info_page($_GET['products_id']), zen_get_all_get_params(array('action')) . 'action=add_product'), 'post', 'enctype="multipart/form-data" onsubmit="return verify_checkboxes(this);"') . "\n"; ?>[/FONT]

[schoolboy]

Thanks doc... I'll give it a go and report back...

[schoolboy]

Works a treat. See it HERE

[Kosse]

Can you post the exact code and where to inset it. I'm not very good at coding....
I need 3 boxes selected.
Thanks so much!!!!

[schoolboy]

Since the original discussion, I have changed the behaviour of my example, and no longer use it. If I have time, I'll go back to my original files and come back to this discussion.

NB: Only if I have time... We are very busy just now.