SaveImgBehavior.php
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<?php
namespace common\behaviors;
use yii\base\Behavior;
use yii\base\ModelEvent;
use yii\db\ActiveRecord;
use yii\web\UploadedFile;
/**
* Class Save Image Behavior
* @property ActiveRecord $owner
* @package common\behaviors
*/
class SaveImgBehavior extends Behavior
{
public $fields;
public $is_language = false;
public function events()
{
return [
ActiveRecord::EVENT_BEFORE_UPDATE => 'beforeSave',
ActiveRecord::EVENT_BEFORE_INSERT => 'beforeSave',
];
}
/**
* @param ModelEvent $event
*/
public function beforeSave($event) {
foreach($this->fields as $field){
$field_name = $field['name'];
$name = $field_name;
if($this->is_language) {
$name = '['.$this->owner->language_id.']'.$name;
}
$image = UploadedFile::getInstance($this->owner, $name);
if(empty($image) && $event->name == ActiveRecord::EVENT_BEFORE_UPDATE) {
$this->owner->$field_name = $this->owner->getOldAttribute($field_name);
} elseif(!empty($image)) {
$imgDir = \Yii::getAlias('@storage/'.$field['directory'].'/');
if(!is_dir($imgDir)) {
mkdir($imgDir, 0755, true);
}
$baseName = $image->baseName;
$iteration = 0;
$file_name = $imgDir.$baseName.'.'.$image->extension;
while(file_exists($file_name)) {
$baseName = $image->baseName.'_'.++$iteration;
$file_name = $imgDir.$baseName.'.'.$image->extension;
}
unset($iteration);
$this->owner->$field_name = $baseName.'.'.$image->extension;
$image->saveAs($file_name);
}
}
}
public function getImageFile($image = 'image') {
return empty($this->owner->$image) ? null : '/storage/'.$this->fields[0]['directory'].'/'. $this->owner->$image;
}
public function getImageUrl($image = 'image') {
return empty($this->owner->$image) ? null : '/storage/'.$this->fields[0]['directory'].'/'. $this->owner->$image;
}
}