Wordpress Woocommerce - use update_post_meta to add product attributes

Question

The products in my clients website require certain attributes which I have added via Products -> Attributes in the Wordpress administration. In this import script I\'

Answer 1

Don't know if this is the "correct" way to do this... But I needed a function to add ACF repeater fields with a date value as a attribute on post save, so this was the function I came up with:

add_action( 'save_post', 'ed_save_post_function', 10, 3 );

function ed_save_post_function( $post_ID, $post, $update ) {
  //print_r($post);
  if($post->post_type == 'product')
    {
     $dates = get_field('course_dates', $post->ID);
     //print_r($dates);
     if($dates)
       {
        $date_arr = array();
        $val = '';
        $i = 0;
        foreach($dates as $d)
               {
                 if($i > 0)
                   {
                    $val .= ' | '.date('d-m-Y', strtotime($d['date']));   
                   }
               else{
                    $val .= date('d-m-Y', strtotime($d['date']));
                   } 
                 $i++;  
               }
            $entry = array(
                           'course-dates' => array(
                                                   'name' => 'Course Dates',
                                                   'value' => $val,
                                                   'position' => '0',
                                                   'is_visible' => 1,
                                                   'is_variation' => 1,
                                                   'is_taxonomy' => 0
                                                  )
                          );
                update_post_meta($post->ID, '_product_attributes', $entry);
       }
    }
}

Hope this helps someone.