SharePoint 2010 Approval workflow with dynamic approvers

approval.js

<div id='intake'>

<img src="/sites/nishantverma/GBSRequest/SiteAssets/loading.gif" />
<br/> 
Submitting your request for approval
</div>

<script type="text/javascript" src="/sites/nishantverma/GBSRequest/SiteAssets/jquery-1.7.1.js"></script>
<script type="text/javascript" src="/sites/nishantverma/GBSRequest/SiteAssets/jquery.SPServices-0.7.0.min.js"></script>
 
<script type="text/javascript">

// Get the Item from the Query String
var ItemID= getParameterByName("ItemID");
var loginName, approverName,approverID;
var debug=0;
// Construct the CAML Query
var CamlQuery = "<Query><Where><Eq><FieldRef Name='ID' /><Value Type='Counter'>"+ItemID+"</Value></Eq></Where></Query>";



  // Make AJAX call
 
 
// Fire GetListItems web service to find the Approval contact
$().SPServices({
    operation: "GetListItems",
    async: false,
    CAMLQuery: CamlQuery ,
    listName: "Intake Requests",
    CAMLViewFields: "<ViewFields><FieldRef Name='Band_x0020_45_x0020_Approval' /></ViewFields>",
    completefunc: function (xData, Status) 
	{
        
        events = new Array();
        $(xData.responseXML).find("z\\:row").each(function() 
		{
				
                approverName=$(this).attr("ows_Band_x0020_45_x0020_Approval");
				var index=approverName.indexOf(";");
				approverID=approverName.slice(0,index);
				
				approverName=approverName.substring(index+2,approverName.length);
				
            if(debug)
			{
				alert(approverName);
				console.log(approverName);
				alert(approverID);
				console.log(approverID);
				
			}
			
        })
    }
})


// We will just get the DisplayName and ID, but not the Login Name, we will fire another web service to fetch the loginName of the User 
if(approverName!=null)
{
		
		 var xmlData ="<soap:Envelope xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xsd='http://www.w3.org/2001/XMLSchema'><soap:Body><GetListItems xmlns='http://schemas.microsoft.com/sharepoint/soap/'><listName>User Information List</listName><query><Query xmlns=''><Where><Eq><FieldRef Name='ID' /><Value Type='Counter'>"+approverID+"</Value></Eq></Where><OrderBy><FieldRef Name='Title' /></OrderBy></Query></query><viewFields><ViewFields xmlns='' /></viewFields><queryOptions><QueryOptions xmlns='' /></queryOptions></GetListItems></soap:Body></soap:Envelope>";

		 $.ajax({
		   url: "/sites/nishantverma/_vti_bin/lists.asmx",
		   type: "POST",
		   async: false,
		   dataType: "xml",
		   data: xmlData, 
		   complete:SuccessFunc,
		   error: ErrorFunc,
		   contentType: "text/xml; charset=\"utf-8\""
		  });
		  
		  function SuccessFunc(result)
		  {
			//xml node with namespace need to be handled differently for jQuery
			 $(result.responseXML).find("z\\:row").each(function() 
			 {
				if(debug)
				{
					alert($(this).attr("ows_Name"));
					console.log($(this).attr("ows_Name"));
				}
				loginName=$(this).attr("ows_Name");
				
				
			});
		}

		function ErrorFunc(result) 
		{
					alert(result.responseText);
		}
		
		
		
		
		
		// Fire the workflow
		if(loginName!=null)
		{
		
			var assocData='<dfs:myFields xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:dms="http://schemas.microsoft.com/office/2009/documentManagement/types" xmlns:dfs="http://schemas.microsoft.com/office/infopath/2003/dataFormSolution" xmlns:q="http://schemas.microsoft.com/office/infopath/2009/WSSList/queryFields" xmlns:d="http://schemas.microsoft.com/office/infopath/2009/WSSList/dataFields" xmlns:ma="http://schemas.microsoft.com/office/2009/metadata/properties/metaAttributes" xmlns:pc="http://schemas.microsoft.com/office/infopath/2007/PartnerControls" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">'+
'<dfs:queryFields></dfs:queryFields>'+
'<dfs:dataFields>'+
'<d:SharePointListItem_RW>'+
'<d:Approvers>'+
 
 
'<d:Assignment>'+
 
'<d:Assignee>'+
'<pc:Person><pc:DisplayName></pc:DisplayName><pc:AccountId>'+loginName+'</pc:AccountId><pc:AccountType>User</pc:AccountType></pc:Person>'+
'</d:Assignee>'+
 
'<d:Stage xsi:nil="true" />'+
'<d:AssignmentType>Serial</d:AssignmentType>'+
 
'</d:Assignment>'+
 
'</d:Approvers>'+
 
 
'<d:ExpandGroups>true</d:ExpandGroups>'+
'<d:NotificationMessage>Please approve</d:NotificationMessage>'+
'<d:DueDateforAllTasks xsi:nil="true" /><d:DurationforSerialTasks xsi:nil="true" />'+
'<d:DurationUnits>Day</d:DurationUnits>'+
'<d:CC />'+
'<d:CancelonRejection>true</d:CancelonRejection>'+
'<d:CancelonChange>false</d:CancelonChange>'+
'<d:EnableContentApproval>false</d:EnableContentApproval>'+
'</d:SharePointListItem_RW>'+
'</dfs:dataFields>'+
'</dfs:myFields>';
		
		
			  $().SPServices({
				operation: "StartWorkflow",
				item: "http://sp.madhurmoss.com/sites/nishantverma/GBSRequest/Lists/Intake%20Requests/" + ItemID + "_.000",
				templateId: "{10E4D465-A9B6-4146-BD50-E9A78888548D}",
				workflowParameters: assocData,
				completefunc: function() 
				{
					if(debug)
					{
						alert('Workflow Started');
						
					}
					$("#intake").html("Your Intake Request has been sent to "+approverName+" for his approval. Thanks for submitting the request. This page will redirect to homepage after few seconds");
					
					window.setTimeout(function() 
					{
						window.location.href = '/sites/nishantverma/GBSRequest';
					}, 5000)
				}
			  });
		}
}



 
function getParameterByName(name)
{
  name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
  var regexS = "[\\?&]" + name + "=([^&#]*)";
  var regex = new RegExp(regexS);
  var results = regex.exec(window.location.href);
  if(results == null)
    return "";
  else
    return decodeURIComponent(results[1].replace(/\+/g, " "));
}
</script>