rf3main/backend/widgets/Alert.php

<?php

namespace backend\widgets;

use Yii;
use common\helpers\StringHelper;

/**
 * Alert widget renders a message from session flash. All flash messages are displayed
 * in the sequence they were assigned using setFlash. You can set message as following:
 *
 * ```php
 * Yii::$app->session->setFlash('error', 'This is the message');
 * Yii::$app->session->setFlash('success', 'This is the message');
 * Yii::$app->session->setFlash('info', 'This is the message');
 * ```
 *
 * Multiple messages could be set as follows:
 *
 * ```php
 * Yii::$app->session->setFlash('error', ['Error 1', 'Error 2']);
 * ```
 *
 * @author Kartik Visweswaran <kartikv2@gmail.com>
 * @author Alexander Makarov <sam@rmcreative.ru>
 */
class Alert extends \yii\bootstrap4\Widget
{
    /**
     * @var array the alert types configuration for the flash messages.
     * This array is setup as $key => $value, where:
     * - key: the name of the session flash variable
     * - value: the bootstrap alert type (i.e. danger, success, info, warning)
     */
    public $alertTypes = [
        'error'   => 'alert-danger',
        'danger'  => 'alert-danger',
        'success' => 'alert-success',
        'info'    => 'alert-info',
        'warning' => 'alert-warning'
    ];
    /**
     * @var array the options for rendering the close button tag.
     * Array will be passed to [[\yii\bootstrap\Alert::closeButton]].
     */
    public $closeButton = [];

    /**
     * {@inheritdoc}
     */
    public function run()
    {
        $session = Yii::$app->session;
        $flashes = $session->getAllFlashes();
        $appendClass = isset($this->options['class']) ? ' ' . $this->options['class'] : '';

        foreach ($flashes as $type => $flash) {
            if (!isset($this->alertTypes[$type])) {
                continue;
            }

            $data = (array) $flash;
            foreach ($data as $i => $message) {
                /* initialize css class for each alert box */
                $this->options['class'] = $this->alertTypes[$type] . $appendClass;

                /* assign unique id to each alert box */
                $this->options['id'] = $this->getId() . '-' . $type . '-' . $i;
                $message = StringHelper::replace("'", '"', $message);
                $message = StringHelper::replace("\r", '', $message);
                $message = StringHelper::replace("\n", '', $message);

                // 调用函数
                $this->view->registerJs(<<<Js
    toastr.{$type}('{$message}')
Js
                );
            }

            $session->removeFlash($type);
        }
    }
}