add to cart - multiple products at once

Question

On my commerce site, I would like to use exact functionality like both ubercart cart links or ubercart kits have - to add multiple different products to cart at once (one click on button or link, no quantity).
Requirement is: products inside cart should behave as single products, with quantity enabled. I do not need discounts.

modules I tried:

• commerce product bundle - adds all products as one product, you can only change quantity
• commerce bundle - separate products but quantity fields disabled.

Rules links look promising but I am not so sure how it would work with many kits. Do anybody have a solution for this? Thank you.

User case: Create various product kits (as content types) with add to cart button. After adding to cart, products behave like normal simple products. (Ubercart has this funtctionality - while creating a product kit, you can check wether you want the products to behave in cart like a kit(a bundle) or as a separate products.)

Answer 1

I am working on the very same requirement - different products from a single (product kit) content type, single add to cart button, and products after adding to cart behave normally.

In this process, I use Commerce Product Kit module. It provides a field formatter for product reference field or an entity reference field pointing to commerce products.
The instructions on use of the module are given on the project page. Try it out and report any issues that you could find :)

P.S: I am the author and maintainer of the module.

Answer 2

Commerce Add to Cart Extras

This module provides alternative ways of adding products to cart.

The initial version provides a views field handler ("Commerce Product: Quantity input field") that relies on the Views Form API (a part of Views 3 since RC1) to output a quantity textfield that turns the view into an add to cart form. The default quantity can be configured, and only products with a quantity larger than 0 are added to the cart.

Answer 3

You can do that by creating a rule, which you then trigger by rules link, or a view VBO block, like (copied from here https://www.drupal.org/node/1468392#comment-10270105):

The Rules Part:

1. create a new rules component. Make it an Action set.
2. First, add a name. EG "VBO Add To Cart". Below, you'll see a table with three rows - you only need to fill in the top one. Choose Commerce product from the dropdown (under Entity), and then fill in the other 2 with something memorable like 'Commerce Product' for the label. The machine name needs to be something like commerce_product. Click continue.
3. On the next page, choose 'add action'. Choose the type of action: Add product to cart.
4. On the next page you need to add the user and the sku. In the user field, start by writing 'site'. This will trigger the dropdown, and you can choose site:current-user. Then for the SKU - first click 'switch to data selection'. You can then click in the field, and select the entity you named earlier (not site). Then you can select sku. Now change the quantity if you need to, then click save.

The Views Part (The easy part)

For this you need VBO installed. Make a view displaying a table of commerce products. You can add the name and the price fields. Next add the VBO field. From the actions list, you should see your newly created rule action. Select it, and if you want, choose to skip the confirmation. Under the bulk options, I also changed it to display as single buttons, as I only have this one action that can be performed. Now save the view. (If you want the tickbox on the left of your table, just rearrange the fields.

Now place your view where you want it (eg a block on a page, or a page, or inserted into a panel) and view it. You should be able to select multiple products with the checkboxes, and then add them to the cart with one click.

Or do it programmatically, like

<?php
    global $user;
    $line_item = commerce_product_line_item_new(commerce_product_load($YOUR_PRODUCT_ID));
    commerce_cart_product_add($user->uid, $line_item);
    $line_item = commerce_product_line_item_new(commerce_product_load($OTHER_PRODUCT_ID));
    commerce_cart_product_add($user->uid, $line_item);
?>

in a custom (Ajax) callback.