Add Default Qty Restrictions Per Each Product Class

I'd be interested in this too. Going to check out the code and see if I can make heads or tails of how to implement it.

EDIT: Looks like this might be easier to implement entirely separately than to graft onto this module.

@greenbeans: Why do you say that? This module is specifically for restricting quantity. New features (including this one) should be added to this module, not created separately, elsewhere. I will try to look into adding this over the next week.

Marked #404426: Restricted Quantity should be parameterized as a duplicate.

Sorry, I meant more that I didn't see a way to do it by reusing the functionality already in the module, not that it should be in a separate one. Let me know if I can help you at all with the implementation.

Please see notes at #348049: Configurable Qty for initial development of this. IT doesn't yet provide class defaults, but does let you configure the quantity at the product level. Please test and report any problems over at the other thread.

Potential solution for this while something more comprehensive comes about.

I'd like to see the qty restriction configurable for product classes so that you can set a class to have a default qty restriction. I am using this for "course registration" and it never makes sense (in our business case) to allow a user to buy more than one (at a time, or ever, though that is a different story for a different feature).

With this module you can go the "Product/Plan" and go to the features, and click the checkbox to empty the cart.
http://drupal.org/project/uc_atctweaks

I have a custom template for the content type i wish only to be purchased. I guess you could hide the add to cart or a redirect based on content type or have that taken care of inside the template

Hope that helps

I would like this feature ass well. Is there any updates on this?

James

subscribing

Subscribing. It would be more useful if the qty can be specified - not fixed at 1, on a per product basis. Keep up the good work!

PLEASE I NEED IT!!! Add Default Qty Restrictions to all default products!!! tiuman@mail.ru send me please !!!

stevepurkiss, I created a custom module and implemented your code but I can't get it to work, for the life of me. Would it be possible for you to simply share your module as an attachment (zip) and I could go in and simply edit the node type and quantity?

Or, I wonder what the php code would be to run to simply add the "Restrict Qty" feature to a product using the "Rules" module... this may be a simpler alternative.

I couldn't get stevepurkiss's code to work either.

As a work around, I deleted all the rows in uc_product_features that mentioned 'restrict_qty', and then batch inserted all those that I wanted, i.e.:

DELETE FROM uc_product_features WHERE 'fid' = 'restrict_qty';

INSERT INTO uc_product_features(nid, fid, description) SELECT nid, 'restrict_qty', 'Users may only purchase one of this product at a time.' FROM NODE WHERE `type` = '<node_type>';

(where is the name of the node type you want).

For products added into the future, I just used the following code:

function my_module_name_nodeapi(&$node, $op, $a3, $a4){
	
  if ($node->type == "<node_type>") {
    switch($op) {
      case 'insert':
        $data = array(
          'nid' => $node->nid,
          'fid' => 'restrict_qty',
          'description' => t('Users may only purchase one of this product at a time.'),
        );
        uc_product_feature_save($data);
        break;
      default:
        break;
      }
  }
}

Hope that can help someone! Seems to work fine.

Am I correct in my reading of this issue that no one has submitted a patch for the module yet? stevepurkiss' code, while potentially useful, seems to be more of a workaround than a fix for the underlying issue. alexkb's code is much cleaner, and closer to the correct fix.

I think that the actual fix would do the following:

• hook_form_alter the product class configuration page to add a variable that would allow you to define whether the given product class was restricted to a specific quantity
• implement the "insert" $op of hook_nodeapi directly, rather than using an action
• in the hook_nodeapi implementation, there would be a condition to check $node->type against the types defined in the variable of product classes for which quantity is restricted (this would be quite similar to the code in the second half of #17)

I don't have the time to code this right now, though I would review if it were available. I will just use a modified version of #17 for the time being.

As for doing it using Rules, that would make the node types customizable, and the PHP code would be, I think, what is inside case 'insert': in #17.

By the way, I tested the code in #17 with the following condition:

if ($node->type == 'registration' || $node->type == 'product') {

Works great!

Now someone just needs to write up a patch, and add the variable setting logic as I described in #18.

Subscribing, greetings, Martijn

I created a patch for this feature, I did it so on 2.x though.

This patch follows the ideas of #18 plus a few more stuff:

- It lets you define defaults on product classes
- It insert the feature for the specific nodes on creation
- It has a batch process allowing you to add the feature to all the nodes that doesn't have it or overwrite everything.
- It fixes a function that should be removing the internal information from the db on node deletion for the proper nodeapi hook.
- it adds fields to the uc_product_classes table using using the proper schema/install/uninstall hooks.

Any help reviewing this is appreciated.

While going through this I got a pretty good picture on how the module works so I will request to owner of this project to become a co-maintainer, I can commit fully to this but one more hand might help a little.

EDIT: NOTE: You need to run update.php after patching the module

Forgot to attach the patch.

Thanks, hanoii! We went live with my version of #17, so I don't have time to review at the moment.

We might be developing another site with the same use case, though, so I may have a chance to review at that time.

I applied the patch to 6.x-2.x-dev but I get an error while trying to apply QTY 1 in my Product Class:

user warning: Unknown column 'uc_restrict_qty_default_qty' in 'field list' query: uc_restrict_qty_uc_product_class_form_submit /* sfxadmin : uc_restrict_qty_uc_product_class_form_submit */ UPDATE uc_product_classes SET uc_restrict_qty_default_qty = 1, uc_restrict_qty_default_lifetime = 1 WHERE pcid = 'MYPRODUCT' in /home/www/site/html/MYSITE_com_root/sites/all/modules/uc_restrict_qty/uc_restrict_qty.module on line 401.

Did somebody else tried the patch?

I was about to look into this, you need to run update.php file after patching the module, because it adds fields to the product_classes table, that's probably why your query is failing.

Thanks, that was the problem - I had a php memory problem thats why the update got stuck in the frist place - disabled some modules, ran update again and - voila :)

Thanks for the quick help and the great time saving patch!

So, are the default quantity restrictions in the dev version now or no? Still only available via a patch?

So, are the default quantity restrictions in the dev version now or no? Still only available via a patch?

So, are the default quantity restrictions in the dev version now or no? Still only available via a patch?

"It has a batch process allowing you to add the feature to all the nodes that doesn't have it or overwrite everything."

Where and when is a batch done to update all products of a contet type to have restrcition of e.g. 1 item

Thank you.

Hello,
i applyed the patch successfully and run update.php
I enabled and restricted to "1" at admin/store/settings/products/edit/features
But nothing is restricted when i add a product to the cart.
Are there any other settings i need to do - what have i missed.
I cannot restrict anything even without the patch?

Thank you

It's been a while since I used this module and submitted the patch. By looking at it, there's an option in the product class form in which you set the default, to batch add the restrictions to the products, that should work. Otherwise I am not sure I'll be able to look into this unless the maintainer is willing to accept this patch, in which case I might try to push it a little bit forward, but It was working for me.

That's currently included in the stable version.

Search for:

" Default maximum limit for a product " in the Ubercart Restrict Qty UI.

#22 & #23 works for me, thank you hanoii .

After I search the internet and drupal for 3 days , this patch only works for me properly!!

Voila !! There is a module for that !!
https://www.drupal.org/project/uc_restrict_qty

@vmtrinka - this module doesn't allow restriction per product class. I'm looking for a D7 solution if anyone knows of one