function savePartQuantity()
 {
     $db = Database::getInstance();
     $cxn = $db->getConnection();
     if ($this->supplierid == '' && $this->moutwardid != '') {
         $q = "INSERT INTO MO_Drg_Qty (Material_Outward_ID,MI_Drg_Qty_ID,Drawing_ID,Outward_Qty)\n\t\t\tVALUES({$this->moutwardid},{$this->midrgqtyid},{$this->partid},{$this->qty})";
         //print("<br>$q");
         if (!($res = $cxn->query($q))) {
             echo "error :", $cxn->error;
         } else {
             $pm = new PartMaterial();
             $pm->setMIDQID($this->midrgqtyid);
             $pm->setPartMaterialDetails();
             $materialreceived = $pm->getQuantity();
             $query = "SELECT sum(Outward_Qty) as oq from MO_Drg_Qty where Drawing_ID={$this->partid} and MI_Drg_Qty_ID={$this->midrgqtyid}";
             //								print("<br>$query");
             if (!($resq = $cxn->query($query))) {
                 echo "error :", $cxn->error;
             } else {
                 $r = mysqli_fetch_assoc($resq);
                 $oq = $r['oq'];
                 $tq = $materialreceived - $oq;
                 //									print("<br>Material received=$materialreceived");
                 if ($tq == 0) {
                     $q3 = "UPDATE MI_Drg_Qty SET Qty_Open='0' WHERE MI_Drg_Qty_ID={$this->midrgqtyid}";
                     //											print("<br>$q3");
                     if (!($resq = $cxn->query($q3))) {
                         echo "error :", $cxn->error;
                     }
                 }
             }
             //								print("Part Quantity of $this->qty Updated in Challan");
         }
         $inwardid = $pm->getInwardID();
         $q4 = "SELECT Drawing_ID FROM MI_Drg_Qty WHERE Qty_Open=1 AND Material_Inward_ID={$inwardid};";
         //print("<br>$q4");
         $res4 = $cxn->query($q4);
         $opendqty = $res4->num_rows;
         if ($opendqty == 0) {
             $q5 = "UPDATE Material_Inward SET Open=0 WHERE Material_Inward_Id={$inwardid};";
             //print("<br>$q5");
             $res5 = $cxn->query($q5);
         }
     } else {
         $q = "INSERT INTO Misc_Material (Material_Outward_ID,Supplier_ID,Material_Desc,Misc_Qty,Misc_Remarks)\n\t\t\tVALUES({$this->moutwardid},{$this->supplierid},'{$this->miscdec}',{$this->qty},'{$this->remark}')";
         //print("<br>$q");
         if (!($res = $cxn->query($q))) {
             echo "error :", $cxn->error;
         }
     }
 }