function psp_update_sub_field($selector, $value, $post_id = false)
{
// filter post_id
// $post_id = acf_get_valid_post_id( $post_id );
// vars
$field = false;
$name = '';
// within a have_rows loop
if (is_string($selector)) {
// loop over global data
if (!empty($GLOBALS['acf_field'])) {
foreach ($GLOBALS['acf_field'] as $row) {
// add to name
$name .= "{$row['name']}_{$row['i']}_";
// override $post_id
$post_id = $row['post_id'];
}
}
// get sub field
$field = get_sub_field_object($selector);
// create dummy field
if (!$field) {
$field = acf_get_valid_field(array('name' => $selector, 'key' => '', 'type' => ''));
}
// append name
$name .= $field['name'];
// update name
$field['name'] = $name;
} elseif (is_array($selector)) {
// validate
if (count($selector) < 3) {
return false;
}
// vars
$parent_name = acf_extract_var($selector, 0);
// load parent
$field = get_field_object($parent_name, $post_id, false, false);
// add to name
$name .= "{$field['name']}";
// sub fields
foreach ($selector as $s) {
if (is_numeric($s)) {
$row_i = intval($s) - 1;
// add to name
$name .= "_{$row_i}";
} else {
// update parent
$field = acf_get_sub_field($s, $field);
// create dummy field
if (!$field) {
$field = acf_get_valid_field(array('name' => $s, 'key' => '', 'type' => ''));
}
// add to name
$name .= "_{$field['name']}";
}
// if
}
// foreach
// update name
$field['name'] = $name;
}
// save
return acf_update_value($value, $post_id, $field);
}
function acf_maybe_get_sub_field($selectors, $post_id = false, $strict = true)
{
// bail ealry if not enough selectors
if (!is_array($selectors) || count($selectors) < 3) {
return false;
}
// vars
$selector = acf_extract_var($selectors, 0);
$selectors = array_values($selectors);
// reset keys
// attempt get field
$field = acf_maybe_get_field($selector, $post_id, $strict);
// bail early if no field
if (!$field) {
return false;
}
// loop
for ($j = 0; $j < count($selectors); $j += 2) {
// vars
$sub_i = $selectors[$j];
$sub_s = $selectors[$j + 1];
$field_name = $field['name'];
// find sub field
$field = acf_get_sub_field($sub_s, $field);
// bail early if no sub field
if (!$field) {
return false;
}
// add to name
$field['name'] = $field_name . '_' . ($sub_i - 1) . '_' . $field['name'];
}
// return
return $field;
}
function update_sub_field($selector, $value, $post_id = false)
{
// filter post_id
$post_id = acf_get_valid_post_id($post_id);
// vars
$field = false;
// within a have_rows loop
if (is_string($selector)) {
// get current row
$row = acf_get_row();
// override $post_id
$post_id = $row['post_id'];
// get sub field
$field = get_sub_field_object($selector, false, false);
// create dummy field
if (!$field) {
$field = acf_get_valid_field(array('name' => $selector, 'key' => '', 'type' => ''));
}
// update name
$field['name'] = "{$row['name']}_{$row['i']}_{$field['name']}";
} elseif (is_array($selector)) {
// validate
if (count($selector) < 3) {
return false;
}
// vars
$parent_name = acf_extract_var($selector, 0);
// load parent
$field = acf_maybe_get_field($parent_name, $post_id);
// add to name
$name = "{$field['name']}";
// sub fields
foreach ($selector as $s) {
if (is_numeric($s)) {
$row_i = intval($s) - 1;
// add to name
$name .= "_{$row_i}";
} else {
// update parent
$field = acf_get_sub_field($s, $field);
// create dummy field
if (!$field) {
$field = acf_get_valid_field(array('name' => $s, 'key' => '', 'type' => ''));
}
// add to name
$name .= "_{$field['name']}";
}
// if
}
// foreach
// update name
$field['name'] = $name;
}
// delete
if ($value === null) {
return acf_delete_value($post_id, $field);
}
// update
return acf_update_value($value, $post_id, $field);
}
function get_row_sub_field($selector)
{
// vars
$row = acf_get_loop('active');
// bail early if no row
if (!$row) {
return false;
}
// attempt to find sub field
$sub_field = acf_get_sub_field($selector, $row['field']);
// bail early if no field
if (!$sub_field) {
return false;
}
// update field's name based on row data
$sub_field['name'] = "{$row['name']}_{$row['i']}_{$sub_field['name']}";
// return
return $sub_field;
}