FRONTEND_MVC/modules/manager/models/Gallery.php

<?php

namespace manager\models;

use app\forks\galleryManager\GalleryBehavior;
use Yii;


/**
 * @property string $inject
 */
class Gallery extends \app\models\base\Gallery
{
    public function behaviors()
    {
        return [
            'galleryBehavior' => [
                'class' => GalleryBehavior::className(),
                'type' => 'post_gallery',
                'extension' => 'png',
                'directory' => Yii::getAlias('@webroot') . '/images/post_gallery/gallery',
                'url' => Yii::getAlias('@web') . '/images/post_gallery/gallery',
                'versions' => [
                    'small' => function ($img) {
                        /** @var \Imagine\Image\ImageInterface $img */
                        return $img
                            ->copy()
                            ->thumbnail(new \Imagine\Image\Box(200, 200));
                    },
                    'medium' => function ($img) {
                        /** @var \Imagine\Image\ImageInterface $img */
                        $dstSize = $img->getSize();
                        $maxWidth = 800;
                        if ($dstSize->getWidth() > $maxWidth) {
                            $dstSize = $dstSize->widen($maxWidth);
                        }
                        return $img
                            ->copy()
                            ->resize($dstSize);
                    },
                    'large' => function ($img) {
                        /** @var \Imagine\Image\ImageInterface $img */
                        $dstSize = $img->getSize();
                        $maxWidth = 1920;
                        if ($dstSize->getWidth() > $maxWidth) {
                            $dstSize = $dstSize->widen($maxWidth);
                        }
                        return $img
                            ->copy()
                            ->resize($dstSize);
                    },
                ]
            ]
        ];
    }

    public function getInject()
    {
        return "##_gallery-".$this->id."##";
    }
}