/**
* Loads UserPreferences model from session or creates new one
* @return UserPreferences
*/
public static function preferences()
{
if (static::$_cachedPreferences === null) {
$model = new UserPreferences();
$model->load([]);
$model->validate();
$attributes = Yii::$app->session->get('UserPreferencesModel');
if (isset($attributes) === true) {
$model->setAttributes($attributes);
}
static::$_cachedPreferences = $model;
}
return static::$_cachedPreferences;
}
public function bootstrap($app)
{
$app->on(Application::EVENT_AFTER_REQUEST, function () use($app) {
$preferences = UserPreferences::preferences();
$defaultPreferences = new UserPreferences();
$defaultPreferences->load([]);
$defaultPreferences->validate();
// compare current preferences with default
// if user hasn't changed anything - don't flood session variable with default preferences
if (count(array_diff($preferences->getAttributes(), $defaultPreferences->getAttributes())) !== 0) {
$app->session->set('UserPreferencesModel', $preferences->getAttributes());
} else {
$app->session->set('UserPreferencesModel', null);
}
});
$app->on(Application::EVENT_BEFORE_ACTION, function () use($app) {
UserPreferences::preferences();
});
}