/**
* Returns a single specified meta value for a term.
*
* This function is basically a wrapper for the WordPress core function `get_term_meta()`
* when calling it with specification of a meta key. If the required field meta value is not available,
* the function will automatically return its default value.
*
* Furthermore the $single parameter can be used to force an array or no array to be returned for the
* meta field. You should generally leave it set to null.
*
* @since 0.6.0
* @param integer $id the term ID to get the meta value for
* @param string $meta_key the meta key (field slug) to get the meta value for
* @param null|boolean $single whether to force an array or no array being returned (default is not to force anything)
* @param boolean $formatted whether to return an automatically formatted value, ready for output (default is false)
* @return mixed the meta value
*/
function wpptd_get_term_meta_value($id, $meta_key, $single = null, $formatted = false)
{
if (!wpptd_supports_termmeta()) {
if ($single) {
return null;
}
return array();
}
$_meta_value = get_term_meta($id, $meta_key, false);
if (doing_action('wpptd') || !did_action('wpptd')) {
if ($single) {
if (count($_meta_value) > 0) {
return $_meta_value[0];
}
return null;
} else {
return $_meta_value;
}
}
$meta_value = null;
$field = \WPDLib\Components\Manager::get('*.*.' . wpptd_get_taxonomy($id) . '.*.' . $meta_key, 'WPDLib\\Components\\Menu.WPPTD\\Components\\PostType.WPPTD\\Components\\Taxonomy.WPPTD\\Components\\TermMetabox', true);
if ($field) {
$meta_value = \WPPTD\Utility::parse_meta_value($_meta_value, $field, $single, $formatted);
}
return $meta_value;
}
/**
* Checks whether all requirements to save meta values for a term are met.
*
* @since 0.6.0
* @param integer $term_id the term ID to save
* @param WP_Term $term the term object
* @return bool whether the meta values can be saved
*/
protected function can_save_meta($term_id, $term)
{
if (!wpptd_supports_termmeta()) {
return false;
}
if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
return false;
}
if (wpptd_get_taxonomy($term_id) != $this->slug) {
return false;
}
$taxonomy_obj = get_taxonomy($this->slug);
if (!current_user_can($taxonomy_obj->cap->edit_terms)) {
return false;
}
return true;
}
/**
* Renders the meta value of this field for usage in a terms list table column.
*
* @since 0.6.0
* @param integer $term_id the term ID to display the meta value for
*/
public function render_table_column($term_id)
{
$formatted = Utility::get_default_formatted($this->type);
$output = wpptd_get_term_meta_value($term_id, $this->slug, null, $formatted);
/**
* This filter can be used by the developer to modify the way a specific meta value is printed in the terms list table.
*
* @since 0.6.0
* @param mixed the formatted meta value
* @param integer the term ID
*/
echo apply_filters('wpptd_' . wpptd_get_taxonomy($term_id) . '_term_table_meta_' . $this->slug . '_output', $output, $term_id);
}