Filtered Lookup multiple Fields

Question

I want to filter the lookup on multiple fields on one form. The problem is that only the last eventhandler I added applies to all fields. For this I wanted to use the context to get the field, which it is currently used. But the filters are applied in the "onload" event of the form, where I don't have the selected context/field in it.

For this I use this code:

function preFilterLookupFunction(executionContext) 
{
   var fieldname = new Array("field1","field2");
   fLen = fieldname.length;

   for (i = 0; i < fLen; i++) 
   {
      var tempName = fieldname[i];
      Xrm.Page.getControl(tempName).addPreSearch(function () 
      {
         addLookupFilterFunction(executionContext);
      });
   }
}

function addLookupFilterFunction(executionContext) 
{
   var attribute = executionContext.getEventSource();
   var tempFieldName = attribute.getName();
   alert(tempFieldName)
   var condition = Xrm.Page.getAttribute("fieldContition").getValue();
   if (condition != null) 
   {
      var fetchXml = "<filter type='and'><condition attribute='fieldContition' operator='eq' value='" + condition + "' /></filter>";            
      Xrm.Page.getControl(tempFieldName).addCustomFilter(fetchXml); 
   }    
}

My question: is it possible to get the context in the addLookupFilterFunction while executing, so I can set the filter to the right field? Or is there a better way to filter multiple field on one form?

Answer 1

The key is that you do not need to pass an executionContext parameter.

In function call addLookupFilterFunction(executionContext) executionContext references the argument variable of function preFilterLookupFunction(executionContext), which will be the same for every iteration of the for loop.

Replace this code:

Xrm.Page.getControl(tempName).addPreSearch(function () 
{
   addLookupFilterFunction(executionContext);
});

by this:

Xrm.Page.getControl(tempName).addPreSearch(addLookupFilterFunction);