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I'm trying to do the following, but I'm stuck with coding. Hope someone can help me out here.

In Woocommerce (on the product-edit page) I can choose in which category the product will be. I made a code where the product will be put in an extra category 'Aanbiedingen' (id=87) upon save, when there are certain conditions.

if ( !empty ($_POST['sale_enddate']) && ($_POST['sale_begindate']) ) {
    $cat_ids = array( 87 );
    wp_set_object_terms( $product_id, $cat_ids, 'product_cat', true );
    }   

Now I would like to have a code where (upon save) the product will be removed from the 'Aanbiedingen' category, but it will still be in other categories.

Example: The product is in category 'Aanbiedingen', 'Comfort', 'Therapie' and 'Warmtezakken' Can someone help me with a code where (upon save) the product will only be in 'Comfort', 'Therapie' and 'Warmtezakken' ?

I guess it has something todo with getting categories with wp_get_object_terms , removing value 'Aanbiedingen' (or id 87) and saving this altered array back with wp_set_object_terms?

I tried several things, but I can't get it done. Can someone please help me?

  • it is harder to help if you don't show the code that doesn't work – Mark Kaplun Nov 14 '15 at 18:29
  • I was looking for (new) code that works, not repairing existing code. I just found my answer below... wp_remove_object_terms() – user3406217 Nov 14 '15 at 21:04
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wp_remove_object_terms( $product_id, 'Aanbiedingen', 'product_cat' );

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