Fix #30: Better validation for undefined groups key param

CHANGE.md

@@ -1,28 +1,37 @@
-version 1.4.3
-=============
+Change Log: `dependent-dropdown`
+================================
+
+## Version 1.4.4
+
+**Date:** 26-Oct-2015
+
+1. (enh #30): Better validation for undefined groups key param.
+
+## Version 1.4.3
+
 **Date:** 14-Jul-2015
 
 1. (enh #27): Better validation for value selected.
 2. (enh #28): Ability to configure HTML attributes for each option element via ajax.
 
-version 1.4.2
-=============
+## Version 1.4.2
+
 **Date:** 18-Jun-2015
 
 1. (enh #23): New property `initDepends` to set all dependent parents in the chain.
 2. (enh #24): Enhancement for Select2 plugin.
 
-version 1.4.1
-=============
+## Version 1.4.1
+
 **Date:** 22-May-2015
 
 1. (enh #19): New `depdrop_all_params` that will be sent as an associative array (keys & values) to the server ajax action.
 2. (enh #20): Ability to configure `id` and `name` param names in json response.
 3. (bug kartik-v/yii2-widget-depdrop#10): Fix process dependency params.
 4. (enh #22): Fixes for JQuery v2.1.4 & Select2.
 
-version 1.4.0
-=============
+## Version 1.4.0
+
 **Date:** 01-Feb-2015
 
 1. Updated trigger of afterChange event
@@ -32,30 +41,30 @@ version 1.4.0
 5. (enh #15): Implement reusable constructor for extending plugin if needed.
 6. (enh #16): Enhance Select2 dropdowns to show loading indicator.
 
-version 1.3.0
-=============
+## Version 1.3.0
+
 **Date:** 08-Nov-2014
 
 1. Set release to stable in composer.json.
 2. Updated CHANGE log to reflect user friendly date time formats.
 
-version 1.2.0
-=============
+## Version 1.2.0
+
 **Date:** 02-Jul-2014
 
 - Enh #8: Ability to pass additional form input data within each ajax call.
 
-version 1.1.0
-=============
+## Version 1.1.0
+
 **Date:** 05-May-2014
 
 - Updated placeholder to accept boolean value (false) to disable it.
 - Added loadingClass property to configure the loading indicator CSS.
 - Added support for plugin to work with other plugins like Select2.
 
 
-version 1.0.0
-=============
+## Version 1.0.0
+
 **Date:** 30-Apr-2014
 
 Initial release.

js/dependent-dropdown.js

@@ -20,7 +20,7 @@
             if (sel !== null && sel.length && id.toString() === sel) {
                 settings.selected = "selected";
             }
-            $("<option/>", settings).appendTo($el);
+            $("<option>", settings).appendTo($el);
         },
         setParams = function (props, vals) {
             var out = {}, i, key, val;
@@ -129,6 +129,9 @@
                             $el.find('option[value=""]').attr('disabled', 'disabled');
                         }
                         if (data.output) {
+                            if (selected && $.isArray(selected) && $el.attr('multiple')) {
+                                $el.val(selected);
+                            }
                             $el.removeAttr('disabled');
                         }
                     }
@@ -159,7 +162,7 @@
                 data = {};
             }
             $.each(data, function (i, groups) {
-                if (groups[idParam]) {
+                if (typeof groups[idParam] !== 'undefined') {
                     options = groups.options || {};
                     addOption($select, groups[idParam], groups[nameParam], defVal, options);
                 }