Reply To: Using acf_form() to store/fetch a multidimensional array meta_key

• John Huebner

• February 11, 2016 at 9:30 am

The first thing you’re going to want to do is take the filters out of your template and put them in your functions.php file.

With the additional information about the fields and arrays I think the following should make it work.

<?php
      
  add_filter('acf/load_value/name=my_repeater_field','load_my_repeater_field_value', 10, 3);
  
  function  load_my_repeater_field_value($value, $post_id, $field) {
    $load_value =  maybe_unserialize(get_post_meta($post_id, '_wc_booking_availability', true));
    if (is_array($load_value)) {
      // this will remove the extra array wrapper
      $load_value = $load_value[0];
    }
    if (is_array($load_value)) {
      // this is seperate
      // just in case the above does not return a nested array
      // you need to format some of the values differently for acf
      // acf stores dates without the -
      foreach ($load_value as $index => $row) {
        $load_value[$index]['from'] = str_replace('-', '', $load_value[$index]['from']);
        $load_value[$index]['to'] = str_replace('-', '', $load_value[$index]['to']);
      }
    }
    return $load_value;
  };
  
  
  add_filter('acf/save_post', 'update_my_repeater_field_value', 20);
  function update_my_repeater_field_value($post_id) {
    // check the post type
    // you don't want to do this on every post type
    if (get_post_type($post_id) != 'product') {
      return;
    }
    $value = array(get_field('my_repeater_field', $post_id));
    update_post_meta($post_id, '_wc_booking_availability', $value);
  }

?>