add customer cart

common/components/SaleAwareBehavior.php

@@ -0,0 +1,24 @@
+<?php
+namespace common\components;
+
+use yii\base\Behavior;
+use common\models\Sale;
+
+class SaleAwareBehavior extends Behavior{
+	
+	
+	public function getSaleName(){
+		$result = "";
+		$sale = $this->owner->sale;
+		if (isset($sale)){
+			$result  = $sale->name;
+		}
+		return $result;
+	}
+
+	
+	public function getSale(){
+		return $this->owner->hasOne( Sale::className(), ["id_sale" =>"id_sale" ] ) ;
+	}
+	
+}