add wate to inventory

backend/models/InventoryItemForm.php

@@ -2,6 +2,7 @@
 
 namespace backend\models;
 
+use common\models\Waste;
 use /** @noinspection PhpMethodOrClassCallIsNotCaseSensitiveInspection */
     Yii;
 use yii\base\Model;
@@ -47,6 +48,7 @@ class InventoryItemForm extends Model{
 	
 	/** internal stuff*/
 	public $product_in;
+	public $product_waste;
 	public $product_out;
 	public $product_stock;
 	public $last_inventory_item;
@@ -94,19 +96,18 @@ class InventoryItemForm extends Model{
 	
 	public function save(){
 
-			
 			$this->loadLastInventory();
-			
 			$this->loadLastInventoryItem();
 			$this->loadProductIn();
 			$this->loadProductSold();
 			$this->loadProductStock();
+			$this->loadProductWaste();
 			
 			$item = new InventoryItem();
 			$item->count_in = $this->product_in;
 			$item->count_sold = $this->product_out;
 			$item->count_system = $this->product_stock;
-
+			$item->count_waste = $this->product_waste;
 
 			if ( isset($this->inventory )){
 			    if ( $this->inventory->type == Inventory::$TYPE_DAILY){
@@ -125,7 +126,6 @@ class InventoryItemForm extends Model{
 			}else{
 				$item->count_prev = 0;
 			}
-			
 
             if ( isset(\Yii::$app->user )){
                 $item->id_user = \Yii::$app->user->id;
@@ -157,7 +157,7 @@ class InventoryItemForm extends Model{
 		$query->select(['coalesce(sum(procurement.count),0) as total_in']);
 		$query->from(Procurement::tableName());
 		$query->innerJoin(Product::tableName(),"product.id_product = procurement.id_product");
-		
+
 		if ( isset($this->last_inventory_item ) ){
 			$query->andWhere([ '>', 'procurement.created_at' ,$this->last_inventory_item->created_at]);
 		}
@@ -170,10 +170,31 @@ class InventoryItemForm extends Model{
 		}else{
 			$query->andWhere(['product.id_inventory_group' => $this->inventoryGroup->id_inventory_group]);
 		}
-		
+
 		$this->product_in = $query->scalar();
-		
+
 	}
+
+    protected function loadProductWaste(){
+        $query = new Query();
+        $query->select(['coalesce(sum(waste.count),0) as total_waste']);
+        $query->from(Waste::tableName());
+        $query->innerJoin(Product::tableName(),"product.id_product = waste.id_product");
+
+        if ( isset($this->last_inventory_item ) ){
+            $query->andWhere([ '>', 'waste.created_at' ,$this->last_inventory_item->created_at]);
+        }
+
+
+        if ( $this->type == 'product') {
+            $query->andWhere(['product.id_product' => $this->product->id_product]);
+        }else{
+            $query->andWhere(['product.id_inventory_group' => $this->inventoryGroup->id_inventory_group]);
+        }
+
+        $this->product_waste = $query->scalar();
+
+    }
 	
 	protected function loadProductSold(){