I am trying to add a variation product to my cart directly through a link. I am setting the variation_id with the query string. As far as I can tell I am sending the data the exact same way as the default variation product form does.

Here's the code inside of my single-product page:

<a href="<?php echo esc_url( $product->add_to_cart_url() ); ?>&variation_id=262" class="rounded-rect-button add-to-cart">Add to Cart</a>

Conversely, the simple product works fine. I have set prices to my product variations in the admin. Not sure why it's not as simple as sending the data through. Any help would greatly appreciated.

2 Answers 2


i currently work on a woocommerce v2.1.12 shop and it seems they chaged that behavior.

my ajax url to add items to the cart has to look like this:




this adds a specific product to the cart and also sets the variation attributes in the cart. you can even set the quantity by simply adding &quantity=[VALUE]

in the end this comes in handy since all these values are set inside the submit form / select fields, you just have to look those up..

  • 2
    Quick note - inspect the variations select field for the proper attribute name. It typically uses hyphens, so you get: &attribute_my-attribute-name=value Mar 27, 2015 at 21:23

Figured this one out. I was missing a couple parameters needed to add a variable product to my cart. The missing params are the variation_id and the attribute type that the variation_id is referring to. The variation id can be found in the admin > woocomerce > products and under the variations tab next to the product variation you have created.

The attribute param is formed from the prefix attribute_ and then the sanitized attribute name. For example, my attribute is called Stock Colors, so my attribute type param is attribute_stock-colors. From what i can tell, you just set attribute_stock-colors=1 because the add to cart method just check to see if it exists.

Here's a simple example of a link that adds a product to my cart with variation id 261 of stock colors:

<a href="<?php echo esc_url( $product->add_to_cart_url() ); ?>&variation_id=261&attribute_stock-colors=1">Add to Cart</a>

To use this in a real situation you would need to set the attribute type and variation id dynamically from the options the user picked in a drop down or something like that (unless every product has the same variation, which would basically make it a simpel product).

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