X-Git-Url: https://delta.frontaccounting.com/gitweb/?a=blobdiff_plain;f=sales%2Fincludes%2Fcart_class.inc;h=a363562eeb4f39ab5101b977a8944e62ac9056a9;hb=a84031edf2c09459a446d896191e27907d8cb188;hp=64a237f320aa824db88f3377e653e6615cbc7132;hpb=06feaeabf5f8376201cf3aeb6367a4c97e1e2cbd;p=fa-stable.git

diff --git a/sales/includes/cart_class.inc b/sales/includes/cart_class.inc
index 64a237f3..a363562e 100644
--- a/sales/includes/cart_class.inc
+++ b/sales/includes/cart_class.inc
@@ -544,6 +544,41 @@ 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;
+	}
+
 } /* end of class defintion */
 
 class line_details