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8.6

Invoking XMLHttp object from Javascript to update data in SQLServer database

Asked by countrymeister in Active Server Pages (ASP), JavaScript

Tags: data, asp, function, javascript, update

I have an ASP page called Occupnats with a button called Edit for each row of Occupants,
when the button is clicked I display another asp page called Occupant Details, which has two fields and two buttons OK and Cancel

The user can change the value of the fields , and click OK, which in turn should save the changes to the database.
I am using the XMLHttp object from my javascript function but it gives me an 500 Internal Server error.
Here is my code

Occupants page
--------------------------

Javascript function
function Edit(id)
      {
            
            var h,w
            h = screen.height
            w = screen.width
            var l,t
            l = parseInt((w-300)/2)
            t = parseInt((h-160)/2)            
            var winpop = window.open('occupant_data_dates.asp?Enabled=1&RBOID=' + id,'HD' + id,'toolbar=no,location=no,menubar=no,dependent,scrollbars=no,width=450,height=140,left='+l+',top='+t);
            winpop.focus();
      }

here is the button click event code

Response.Write "<td><span id=""r_" & row_count & "c_3a""><input type=""button"" name=""add_occupant_"" value=""Edit"" class=""button3"" OnClick=""Edit('" & rsGetData("ID") & "')""></span></td>"
===============================================================================
Occupant Details page
----------------------------

Onclick event for OK button
<input type="button" value="OK" name="OK" class="buttonNormal"  onClick="validateForm(<%Response.Write d_RoomBlockOccupantID%>);" >

Validate form javascript functions
<script language="JavaScript" type="text/javascript">
      
      var _xmlHttp=null;
      var RBOID=0;
      var ArrivalDate="";
      var DepartureDate="";
      var SpecialNeeds="";

function validateForm(id)
      {
        AddUpdateRBOID(id);
        return true;
      }
      
function AddUpdateRBOID(id)
      {
            RBOID=id;
            ArrivalDate=document.forms[0].elements['ArrivalDate'];
            DepartureDate=document.forms[0].elements['DepartureDate'];
            SpecialNeeds=document.forms[0].elements['SpecialNeeds'];
            DB();
            window.close();
      }
      
function DB()
      {
            var result="";
            _xmlHttp=getXMLHTTP();
            var sURL = "occupant_data_dates_update1.asp?rboid=" + RBOID + "&ad=" + ArrivalDate + "&dd=" + DepartureDate + "&sneeds=" + SpecialNeeds;            
            _xmlHttp.open( "POST", sURL, false );
            _xmlHttp.send(null);
            var TempString=_xmlHttp.responseText;
            var Tempstatus = _xmlHttp.status;
            var TempstatusText = _xmlHttp.statusText;
            var temp_array=TempString.split(",");
            result=temp_array[0];
            message=temp_array[1];
            if(result=="0")
            {
            
            }else{
                        if(message==undefined)
                        {
                              alert(TempString);
                              
                        }else{
                              alert(message);
                              alert(Tempstatus);
                              alert(TempstatusText);
                              alert(result);
                              
                        }
                        
                  return false;
            }

            return true;
      }
function getXMLHTTP()
      {
            // returns an XMLHttp object... gets it in an IE/Mozilla friendly way..
            var A=null;
            try
            {
                  A=new ActiveXObject("Msxml2.XMLHTTP")
             }catch(e){
                  try
                  {
                        A=new ActiveXObject("Microsoft.XMLHTTP")
                  }catch(oc){
                        A=null
                  }
            }

            if(!A && typeof XMLHttpRequest != "undefined")
            {
                        A=new XMLHttpRequest()
            }
            return A
      }
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<%@ Language=VBScript %>
<%
Option Explicit
If Session("UserID")="" OR Session("Password")="" Then
	Response.Write "<script>"
	Response.Write "parent.ChildTimeOut();"
	Response.Write "</script>"
	Response.End
End If
%>
<!--#include file ="Includes/housing_db_connect.asp"-->
<!--#include file ="Includes/encrypter.asp"-->
<%
dim strSQL
dim rsGetData
dim Action
dim Name
dim ArrivalDate
dim DepartureDate
dim SpecialNeeds
 
dim d_RoomBlockID
dim d_RoomBlockOccupantID
dim d_ViewEnabled
 
 
dim txtDis
dim btnDis
 
d_RoomBlockOccupantID=request.querystring("RBOID")
d_ViewEnabled=request.querystring("Enabled")
 
If d_ViewEnabled=1 Then		
		txtDis = " enabled"
		btnDis = " enabled"
Else		
		txtDis = " readonly"
		btnDis = " disabled"	
end if
 
 
 
 
strSQL="exec spOccupantData_LoadPopup " & d_RoomBlockOccupantID 
Set rsGetData=adocon.Execute(strSQL)
	If NOT rsGetData.EOF Then
		Name=rsGetData("Name")
		ArrivalDate=rsGetData("ArrivalDate")
		DepartureDate=rsGetData("DepartureDate")
		SpecialNeeds=rsGetData("SpecialNeeds")
	
	Else
		Name=""
		ArrivalDate=""
		DepartureDate=""
		SpecialNeeds=""
	End If
 
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
	<title>Occupant Details</title>
	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
	<meta name="author" content="AB">	
	<meta name="date-created" content="2007-12-23">
	<meta name="robots" content="noindex,nofollow">
	<meta http-equiv="msthemecompatible" content="no">
	<link rel="stylesheet" href="Style/style.css" type="text/css">
 
	<script language="JavaScript" type="text/javascript">
	
	var _xmlHttp=null;
	var RBOID=0;
	var ArrivalDate="";
	var DepartureDate="";
	var SpecialNeeds="";
	
	function validateForm(id)
	{
		if(!hasText('ArrivalDate','Arrival Date')){
			return false;
		}
		if(!isDate('ArrivalDate','Arrival Date')){
			return false;
		}
		if(!hasText('DepartureDate','Departure Date')){
			return false;
		}
		if(!isDate('DepartureDate','Departure Date')){
			return false;
		}
		if (!compareDate('ArrivalDate','DepartureDate'))
			{ 
			  return false;	
			}
	  AddUpdateRBOID(id);
	  return true;
	}
	
	function AddUpdateRBOID(id)
	{
		RBOID=id;
		ArrivalDate=document.forms[0].elements['ArrivalDate'];
		DepartureDate=document.forms[0].elements['DepartureDate'];
		SpecialNeeds=document.forms[0].elements['SpecialNeeds'];
		DB();
		window.close();
	}
	
	function DB()
	{
		var result="";
		_xmlHttp=getXMLHTTP();
		var sURL = "occupant_data_dates_update1.asp?rboid=" + RBOID + "&ad=" + ArrivalDate + "&dd=" + DepartureDate + "&sneeds=" + SpecialNeeds;		
		_xmlHttp.open( "POST", sURL, false );
		_xmlHttp.send(null);
		var TempString=_xmlHttp.responseText;
		var Tempstatus = _xmlHttp.status;
		var TempstatusText = _xmlHttp.statusText;
		var temp_array=TempString.split(",");
		result=temp_array[0];
		message=temp_array[1];
		if(result=="0")
		{
		
		}else{
				if(message==undefined)
				{
					alert(TempString);
					
				}else{
					alert(message);
					alert(Tempstatus);
					alert(TempstatusText);
					alert(result);
					
				}
				
			return false;
		}
 
		return true;
	}
	
	
	function hasText(strFieldName,strMessage)
	{
		var objFormField = document.forms[0].elements[strFieldName];
		var strValue = objFormField.value;
		strValue = strValue.split(" ").join("")
		if(strValue.length<1){
			alert("The value for " + strMessage + " cannot be blank!");
			objFormField.focus();
			return false;
		}
		if(strValue.length>10){
			alert("The value for " + strMessage + " is invalid!");
			objFormField.focus();
			return false;
		}
		return true;
	}
	
	function isDate(strFieldName,strMessage)
	{
		var objFormField = document.forms[0].elements[strFieldName];
		strDate = objFormField.value;
		if(strDate.length>0){
				var dateregex=/^[ ]*[0]?(\d{1,2})\/(\d{1,2})\/(\d{4,})[ ]*$/;
				var match=strDate.match(dateregex);
				if (match){
						    var tmpdate=new Date(match[3],parseInt(match[1],10)-1,match[2]);
					if (tmpdate.getDate()==parseInt(match[2],10) && tmpdate.getFullYear()==parseInt(match[3],10) && (tmpdate.getMonth()+1)==parseInt(match[1],10)){ 
						return true; 
					 }
				  }
			alert("Please enter a valid " + strMessage + "!");
			objFormField.focus();
			return false;
		}
		else{
			 return true;
		}
	}
	
	function compareDate(strArrivalDate, strDepartureDate)
         {
        
         var fromDate = document.forms[0].elements[strArrivalDate];
         strFromDate = fromDate.value;
         var ToDate = document.forms[0].elements[strDepartureDate];
         strToDate = ToDate.value;
         
         var first=new Date(strFromDate);
		 var second=new Date(strToDate);
		 if (first>second)
		 {
			alert("Arrival date must be less than Departure date");			
			return false;
		 }
            return true;
         }
 
	function getXMLHTTP()
	{
		// returns an XMLHttp object... gets it in an IE/Mozilla friendly way..
		var A=null;
		try
		{
			A=new ActiveXObject("Msxml2.XMLHTTP")
		 }catch(e){
			try
			{
				A=new ActiveXObject("Microsoft.XMLHTTP")
			}catch(oc){
				A=null
			}
		}
 
		if(!A && typeof XMLHttpRequest != "undefined")
		{
				A=new XMLHttpRequest()
		}
		return A
	}
 
	function SetInnerHTML(span_id, str_text)
	{
		eval("document.getElementById('" + span_id + "').innerHTML=str_text");
	}
	
	function ChildTimeOut()
	{
		parent.ChildTimeOut();
	}
	</script>
</head>
<body>
<form name="occupant_data_dates" action="occupant_data_dates.asp" method="post" AUTOCOMPLETE="off">
<!-- OCUPANT DATA DETAILS TABLE-->
<table  height="100%" width="450" cellpadding="0" cellspacing="0" border="0">	
    <tr>
		<td><img src="Images/tran_pix_1x1.gif" width="5" height="1" border="0" alt=""></td>
		<td><span class="Label2"><% Response.Write Name%></td>
		<td><span class="Label1">&nbsp;</td>		
		<td><span class="Label1">&nbsp;</td>
		<td><span class="Label1">&nbsp;</td>
		<td><img src="Images/tran_pix_1x1.gif" width="1" height="1" border="0" alt=""></td>
	</tr>		
	<tr>
		<td><img src="Images/tran_pix_1x1.gif"  width="5" height="1" border="0" alt=""></td>
		<td><span class="Label1">Arrival Date&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:</td>
		<td>
			<input type="text" id="ArrivalDate" name="ArrivalDate" class="textbox1" value="<% Response.Write ArrivalDate%>" <%Response.Write txtDis%> >&nbsp;&nbsp<span class="Label1">mm/dd/yyyy</span>	
		</td>
		
		
	</tr>
	<tr>
		<td><img src="Images/tran_pix_1x1.gif"  width="5" height="1" border="0" alt=""></td>
		<td><span class="Label1">Departure Date :</td>
		<td>
		<input type="text" id="DepartureDate" name="DepartureDate" class="textbox1" value="<% Response.Write DepartureDate%>" <%Response.Write txtDis%> >&nbsp;&nbsp<span class="Label1">mm/dd/yyyy</span>
		</td>
		
				
	</tr>
	<tr>
		<td><img src="Images/tran_pix_1x1.gif"  width="5"  height="1" border="0" alt=""></td>
		<td><span class="Label1">Special Needs&nbsp;&nbsp;&nbsp;:</td>
		<td>
		<textarea name="SpecialNeeds" id="SpecialNeeds" <%Response.Write txtDis%> style="width: 100%; class: Label1;" ><%Response.Write SpecialNeeds%></textarea>		
		</td>
	</tr>
	<tr>
		<td><img src="Images/tran_pix_1x1.gif"  width="5"  height="1" border="0" alt=""></td>
		<td><span class="Label1">&nbsp</td>
		<td><span class="Label1">&nbsp</td>
	</tr>
	<tr>
		<td><img src="Images/tran_pix_1x1.gif"   width="5" height="1" border="0" alt=""></td>
		<td><span class="Label1">&nbsp;</td>				
		<td align="left">
			<input type="button" value="OK" name="OK" class="buttonNormal"  onClick="validateForm(<%Response.Write d_RoomBlockOccupantID%>);" <%Response.Write btnDis%>>&nbsp;&nbsp;
			<input type="button" value="Cancel" name="Cancel" class="buttonNormal" onClick="window.close();">
		</td>
		<td><img src="Images/tran_pix_1x1.gif"  width="1"  height="1" border="0" alt=""></td>		
	</tr>
</table>
<!-- END OCUPANT DATA TABLE-->
</form>
</body>
</html>
[+][-]12/25/07 01:55 AM, ID: 20526851Accepted Solution

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About this solution

Zones: Active Server Pages (ASP), JavaScript
Tags: data, asp, function, javascript, update
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Solution Provided By: hielo
Participating Experts: 3
Solution Grade: A
 
[+][-]12/24/07 01:01 PM, ID: 20525848Expert Comment

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[+][-]12/24/07 03:20 PM, ID: 20526044Author Comment

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[+][-]12/24/07 04:32 PM, ID: 20526159Author Comment

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[+][-]12/24/07 05:47 PM, ID: 20526276Expert Comment

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