/**
* Create a term field instance.
*
* @param string $field_slug Slug of existing field definition.
* @param int $term_id ID of the term where the field belongs.
*
* @return null|WPCF_Field_Instance Field instance or null if an error occurs.
* @since 1.9
*/
public static function create_term_field_instance($field_slug, $term_id)
{
try {
return new WPCF_Field_Instance(WPCF_Field_Term_Definition_Factory::load($field_slug), $term_id);
} catch (Exception $e) {
return null;
}
}
/**
* Render single cell in a term listing table.
*
* Catch field columns by their name prefix and render field values with preview renderer.
*
* @param mixed $value ""
* @param string $column_name
* @param int $term_id
* @link https://make.wordpress.org/docs/plugin-developer-handbook/10-plugin-components/custom-list-table-columns/
* @return string Rendered HTML with the table cell content.
* @since 1.9.1
*/
public function manage_term_listing_cell($value, $column_name, $term_id)
{
// Deal only with our custom columns.
$is_term_field_cell = substr($column_name, 0, strlen(self::LISTING_COLUMN_PREFIX)) == self::LISTING_COLUMN_PREFIX;
if ($is_term_field_cell) {
try {
$field_slug = substr($column_name, strlen(self::LISTING_COLUMN_PREFIX));
$field_definition = WPCF_Field_Term_Definition_Factory::load($field_slug);
$field = new WPCF_Field_Instance_Term($field_definition, $term_id);
$renderer_args = array('maximum_item_count' => 5, 'maximum_item_length' => 30, 'maximum_total_length' => 100);
$renderer = WPCF_Field_Renderer_Factory::get_instance()->create_preview_renderer($field, $renderer_args);
$value = $renderer->render();
} catch (Exception $e) {
// Do nothing when we're unable to load the field.
}
}
return $value;
}
