relationHelper.php
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<?php
namespace common\modules\relation;
use Yii;
use yii\base\Object;
class relationHelper extends Object {
/** @var array $relations Cached relations list */
private static $relations;
/**
* Return all relations for current @app
* @return array
*/
public static function getRelations() {
$module = \Yii::$app->getModule('relation');
if (!is_array($module->relations))
return [];
return $module->relations;
}
/**
* Return one relation for key $name
* @param string $name
* @return string (@todo refix to relationOject)
*/
public static function getRelation($name) {
$name = strtolower($name);
if (isset(self::$relations[$name])) {
return self::$relations[$name];
}
$relations = self::getRelations();
if (isset($relations[$name])) {
self::$relations[$name] = self::prepareRelation($relations[$name]);
} else {
self::$relations[$name] = null;
}
return self::$relations[$name];
}
private static function prepareRelation($relation) {
if (!isset($relation['linked_table']) && isset($relation['via']['model'])) {
$relation['linked_table'] = $relation['via']['model']::tableName();
}
return $relation;
}
/**
* @param string $name
* @return bool
*/
public static function issetRelation($name) {
$relations = self::getRelations();
return isset($relations[$name]);
}
}