How to remove duplicates from a dropdown #k2 #k2-blackpearl #k2-smartforms #js

dropdown-duplicates-remove.js

//In order to make it work you need to replace YourControlName with the name of your dropdown.
//This piece of code assumes, that you have only 1 dropdown on the form with this name. In any case only the first instance will be taken.

var dropdownControlPath = "Controllers/Controller/Controls/Control[@Name='YourControlName']";
var dropDownControlControl = $sn($xml(__runtimeControllersDefinition), dropdownControlPath);
var contrId = dropDownControlControl.getAttribute('ID');
var ddl = $('#' + contrId + '_DropDown');

var items = $(ddl).dropdown('option', 'items');
for( var i = 0; i < items.length; i++){
	for( var x = i+1; x < items.length; x++){
		if( items[x].text == items[i].text ){
			items.splice(x,1);
			--x;
		}
	}
}
$(ddl).dropdown('option', 'items', items);
$(ddl).dropdown('refresh');

//For this code to work, you need to send it to a Literal DataLabel after your control is populated.
//Certainly, the piece of code needs to be wrapped into `<script>...</script>` tags.