Lookup fields

Description

This article will describe the CRM Lookup field in detail and how to get and set its properties using javascript.

The lookup field is an array that contains a collection of name/value pairs.
But what is a name/value pair in javascript? Look no further than the Object class.

 Example:

     var obj = new Object();
     obj["name"] = "value";

     //Running alert(obj["name"]) will display "value"

Name Value Collection

   Name      Value
  
   id        Gets or sets the GUID identifier.

   name      Gets or sets the name of the record to be 
             displayed in the lookup.

   type      Gets or sets the object type code

Code

Retrieving values from a Lookup field

Example:  with crmForm.all.new_mylookup

   var lkup = crmForm.all.new_mylookup;
   if(lkup != null)
   {
      var arr = lkup.DataValue;
      if(arr.length > 0)
      {
         var objNameValues = arr[0];
         if(objNameValues != null)
         {
            alert(objNameValues.id);
            alert(objNameValues.name);
            alert(objNameValues.type);
         }
      }
   }

Code

Setting values in a Lookup field

Example:  with crmForm.all.new_mylookup

  var objNameValues = new Object();
  objNameValues["id"] = "{GUID}";
  objNameValues["name"] = "Name";
  // Entity type code
  objNameValues["type"] = "TYPE CODE";

  crmForm.all.new_mylookup.DataValue =
                         new Array(objNameValues);