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Which action precedes the `woocommerce_save_product_variation` action hook?

Can anyone tell me which action precedes the woocommerce_save_product_variation action hook?

I’m trying to save old price and quantity before updating product variation

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3

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  1. Chosen as BEST ANSWER
    0

    I solved with woocommerce_variation_header.

    This hook will be activated for each product variation. Therefore, you need to have a private class-level associative array, where you will store (for you) important information from product (variation), e.g. price, stock quantity, etc.

    After that, save that array in db, ie. wp_options, with a specific name.

    When you call woocommerce_save_product_variation, then also call array that you already saved for same variation from wp_options and finally then compare the data.

    That’s what I needed but a detour and reason for this approach is that I had to stay on the same old version of WooCommerce.

    Thank you all for participating!


  2. 0

    In meta-boxes/class-wc-meta-box-product-data.php line 530-541 you can find

    /**
 * Set variation props before save.
 *
 * @param object $variation WC_Product_Variation object.
 * @param int $i
 * @since 3.8.0
 */
do_action( 'woocommerce_admin_process_variation_object', $variation, $i );

$variation->save();

do_action( 'woocommerce_save_product_variation', $variation_id, $i );

    So woocommerce_admin_process_variation_object action precedes woocommerce_save_product_variation

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  3. 0

    Use woocommerce_admin_process_variation_object

    add_action('woocommerce_admin_process_variation_object', 'prefix_previous_variation_price', 10, 1);
function prefix_previous_variation_price($variation) {
   $previous_price = $variation->get_price();
}

    To find this kind of hook you can look woocommerce source files.
    For example for this: I search the woocommerce_save_product_variation on http://hookr.io/. I saw that this hook was called in class-wc-meta-box-product-data.php. Then I take a look to this file and I find woocommerce_admin_process_variation_object hook who are called just before $variation->save();

    Take a look here:
    https://github.com/woocommerce/woocommerce/blob/ac9f83d7724b889a1740d651eb4cd8ac5bb5b4f2/includes/admin/meta-boxes/class-wc-meta-box-product-data.php#L537

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