add Image and Upload helper classes

backend/models/UploadForm.php

@@ -3,22 +3,45 @@ namespace backend\models;
 
 use yii\base\Model;
 use common\models\User;
+use common\models\Image;
 
 class UploadForm extends Model{
 	
 	
+	const SECRET= "aN6obLS2wMFzXw2VQBar";
+	
 	public $image ;
+	public $secret;
+	
 	/**
 	 * @inheritdoc
 	 * @formatter:off
 	 */
 	public function rules()
 	{
-		return [['image',function ($attribute, $params) {}],	];
+		return [ 
+				
+				[['image'], 'image', 'mimeTypes' => 'image/jpeg, image/png', 'extensions'=>'jpg, png'],
+				[['image'], 'required',],
+				[['secret'], 'required'],
+				[['secret'], 'validSecret'],
+				
+		];
 	}
 	
+	public function validSecret(){
+		if ( $this->secret != self::SECRET ){
+			$this->addError("secret","Invalid secret");
+		}
+	}
+
+	
 	public function save(){
+		
+		$image = new Image();
+		
 		return true;
 	}
+
 	
 }