start for getting the value of the max column size from an action

layouts/vlayout/modules/CustomView/resources/CustomView.js

@@ -12,6 +12,7 @@ var Vtiger_CustomView_Js = {
 	contentsCotainer : false,
 	columnListSelect2Element : false,
 	advanceFilterInstance : false,
+	maximumColumnCount : 12,
 
 	//This will store the columns selection container
 	columnSelectElement : false,
@@ -197,8 +198,18 @@ var Vtiger_CustomView_Js = {
 	 * Function which will register the select2 elements for columns selection
 	 */
 	registerSelect2ElementForColumnsSelection : function() {
-		var selectElement = Vtiger_CustomView_Js.getColumnSelectElement();
-		app.changeSelectElementView(selectElement, 'select2', {maximumSelectionSize: 12,dropdownCss : {'z-index' : 0}});
+		var url = "index.php?module=CustomView&action=EditAjax&mode=getData&record=";
+		AppConnector.request(url).then(
+			function(data){
+				// TODO: check data returned by ajax call
+				console.debug(data);
+				var selectElement = Vtiger_CustomView_Js.getColumnSelectElement();
+				// access correct data key/val to set the max size
+				app.changeSelectElementView(selectElement, 'select2', {maximumSelectionSize: data,dropdownCss : {'z-index' : 0}});
+			},
+			
+			function(error,err){}
+		);
 	},
 
 	registerEvents: function(){

modules/CustomView/actions/EditAjax.php

+<?php
+/*+***********************************************************************************
+ * The contents of this file are subject to the vtiger CRM Public License Version 1.0
+ * ("License"); You may not use this file except in compliance with the License
+ * The Original Code is:  vtiger CRM Open Source
+ * The Initial Developer of the Original Code is vtiger.
+ * Portions created by vtiger are Copyright (C) vtiger.
+ * All Rights Reserved.
+ *************************************************************************************/
+
+class CustomView_EditAjax_Action extends Vtiger_Action_Controller {
+
+
+
+	public function process(Vtiger_Request $request) {
+	    // TODO: check record parameter is set
+	    $customViewModel = CustomView_Record_Model::getInstanceById($request->get('record'));
+	    // TODO: implement this function call
+	    $customViewModel->getMaxColumnCount();
+	}
+}
\ No newline at end of file