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);
}
}
}
/**
* @param int $field
*
* @return null|string
*/
public function getImageFile($field = 0)
{
$fieldset = $this->fields[ $field ];
$name = $fieldset[ 'name' ];
$directory = $fieldset[ 'directory' ];
return empty( $this->owner->$name ) ? NULL : '/storage/' . $directory . '/' . $this->owner->$name;
}
/**
* @param int $field
* @param bool $dummy
*
* @return null|string
*/
public function getImageUrl($field = 0, $dummy = true)
{
$fieldset = $this->fields[ $field ];
$name = $fieldset[ 'name' ];
$directory = $fieldset[ 'directory' ];
if(!empty($this->owner->$name)) {
return '/storage/'.$directory.'/'.$this->owner->$name;
} elseif ($dummy) {
return '/storage/no-image.png';
} else {
return null;
}
}
}