• John Huebner

• June 26, 2018 at 10:18 pm

From what I can see you are updating a subfield for a repeater that does not exist yet and then you’r updating the repeater with empty information except for the title.

When updating a repeater field the value $data should be a multidimensional array.

$data = array(
  // array element for each row
  array(
    // an element for each field
    // since field does not exist always use field keys
    'field_123345' => 'value for field 1',
    'field_234567' => 'value for field 2',
    'field_456789' => 'value for field 3',
    // etc...
  ),
  array(
    // an element for each field
    // since field does not exist always use field keys
    'field_123345' => 'value for field 1',
    'field_234567' => 'value for field 2',
    'field_456789' => 'value for field 3',
    // etc...
  )
);

update_field('field_key_for_repeater', $value, $post_id);