zhuravljov / yii2-queue-monitor

src/base/FlashTrait.php

<?php
/**
 * @link https://github.com/zhuravljov/yii2-queue-monitor
 * @copyright Copyright (c) 2017 Roman Zhuravlev
 * @license http://opensource.org/licenses/BSD-3-Clause
 */

namespace zhuravljov\yii\queue\monitor\base;

use Yii;

/**
 * FlashTrait
 *
 * @author Roman Zhuravlev <zhuravljov@gmail.com>
 */
trait FlashTrait
{
    /**
     * @param string $message
     * @return $this
     */
    protected function success($message)
    {
        return $this->flash('success', $message);
    }

    /**
     * @param string $message
     * @return $this
     */
    protected function info($message)
    {
        return $this->flash('info', $message);
    }

    /**
     * @param string $message
     * @return $this
     */
    protected function warning($message)
    {
        return $this->flash('warning', $message);
    }

    /**
     * @param string $message
     * @return $this
     */
    protected function error($message)
    {
        return $this->flash('error', $message);
    }

    /**
     * @param string $type
     * @param string $message
     * @return $this
     */
    protected function flash($type, $message)
    {
        Yii::$app->session->setFlash($type, $message);

The method setFlash() does not exist on null.

        return $this;
    }
}