X-Git-Url: https://delta.frontaccounting.com/gitweb/?a=blobdiff_plain;ds=sidebyside;f=sales%2Fincludes%2Fcart_class.inc;h=78f8309aaae42bb4debab6a444ec97d569c7e3f1;hb=1b9351ae81a67726e757eba55895a4f059c7f128;hp=60491f564b3202acbc4ba095236198337462d906;hpb=fa43a9c974d05b77517a0d8e3e510ef4a088632e;p=fa-stable.git

diff --git a/sales/includes/cart_class.inc b/sales/includes/cart_class.inc
index 60491f56..78f8309a 100644
--- a/sales/includes/cart_class.inc
+++ b/sales/includes/cart_class.inc
@@ -558,6 +558,40 @@ class cart
 		return $total;
 	}
 
+	/*
+		Checks cart quantities on document_date.
+		Returns array of stock_ids which stock quantities would go negative on some day.
+	*/
+	function check_qoh($date=null, $location=null)
+	{
+		$low_stock = array();
+		// check only for customer delivery and direct sales invoice 
+	   	if (!($this->trans_type == ST_CUSTDELIVERY || ($this->trans_type == ST_SALESINVOICE && $this->trans_no==0)))
+	   		return $low_stock;
+
+		// collect quantities by stock_id
+		$qtys = array();
+		foreach ($this->line_items as $line_no => $line_item)
+		{
+			if (has_stock_holding($line_item->mb_flag))
+			{
+				if (!$this->trans_no) // new delivery
+					$qtys[$line_item->stock_id]['qty'] = $line_item->qty_dispatched + @$qtys[$line_item->stock_id]['qty'];
+				else	// DN modification: check change in quantity
+					$qtys[$line_item->stock_id]['qty'] = ($line_item->qty_dispatched-$line_item->qty_old) + @$qtys[$line_item->stock_id]['qty'];
+				$qtys[$line_item->stock_id]['line'] = $line_no;
+			}
+		}
+
+		foreach($qtys as $stock_id => $sum)
+		{
+			if (check_negative_stock($stock_id, -$sum['qty'], $location ? $location : $this->Location, $date ? $date : $this->document_date))
+				$low_stock[] = $stock_id;
+		}
+
+		return $low_stock;
+	}
+
 	/*
 		Returns true for documents issued in prepayment cycle.
 	*/