README

Provides behaviors for attach files to model and manipulate it if files is image

Features

• Multilevel file store structure
• Can generate thumbnail manual, by demand, after upload or return image as base64 encoded string
• Automatic delete linked file when delete model
• Allow use any image manipulation component. Default use imagine

Installation

The preferred way to install this extension is through composer.

Either run

php composer.phar require --prefer-dist salopot/yii2-attach-image "dev-master"

or add

"salopot/yii2-attach-image": "dev-master"

to the require section of your composer.json file.

Usage

Once the extension is installed, simply use it in your code by :

//in model

use salopot\attach\behaviors\AttachFileBehavior;
use salopot\attach\behaviors\AttachImageBehavior;
...

public function rules()
{
    return [
        ...
        [['origin_name'], 'string', 'max' => 255],
        [['image'], 'image'],
    ];
}

public function behaviors()
{
    return [
        'image' => [
            'class' => AttachImageBehavior::className(),
            'attributeName' => 'image',
            //'relativeTypeDir' => '/upload/images/test/',
            'types' => array(
                'thumb' => array(
                    //'format' => 'gif', //"gif", "jpeg", "png", "wbmp", "xbm"
                    'process' => function($behavior, $image) {
                        return $image->thumbnail(new \Imagine\Image\Box(150, 150));
                    }
                ),
                'background' => array(
                    'process' => function($behavior, $image) {
                        $image = $image->thumbnail(new \Imagine\Image\Box(150, 150));
                        $image->effects()->grayscale();
                        return $image;
                    },
                ),
                'main' => array(
                    //'processOn' => AttachImageBehavior::PT_DEMAND, //PT_RENDER, PT_BASE64_ENCODED,
                    'process' => function($behavior, $image) {
                        $watermark = \yii\imagine\Image::getImagine()->open(Yii::$app->params['watermark']);
                        $size = $image->getSize();
                        $wSize = $watermark->getSize();
                        $bottomRight = new \Imagine\Image\Point($size->getWidth() - $wSize->getWidth(), $size->getHeight() - $wSize->getHeight());
                        $image->paste($watermark, $bottomRight);
                        $image = $image->thumbnail(new \Imagine\Image\Box(150, 150));
                        return $image;
                    },
                ),
            ),
        ]
    ];
}

//Also can store extended info

public function init()
{
    parent::init();
    $this->on(AttachFileBehavior::EVENT_AFTER_ATTACH_DATA, [$this, 'afterAttachData']);
}

public function afterAttachData($event) {
    $this->origin_name = $event->uploadedFile->name;
}

//in form edit view:
<?= $form->field($model, 'image')->fileInput() ?>

//in view:
<?= Html::img($model->getBehavior('image')->getUrl('thumb')); ?>
<?= Html::img($model->getBehavior('image')->getUrl('background')); ?>
<?= Html::img($model->getBehavior('image')->getUrl('main')); ?>