Enhanced `handleAction()` in `yii.js`

Closes #12737

framework/CHANGELOG.md

@@ -31,7 +31,7 @@ Yii Framework 2 Change Log
 - Bug #13071: Help option for commands was not working in modules (arogachev, haimanman)
 - Bug #13089: Fixed `yii\console\controllers\AssetController::adjustCssUrl()` breaks URL reference specification (`url(#id)`) (vitalyzhakov)
 - Bug #13105: Fixed `validate()` method in `yii.activeForm.js` to prevent unexpected form submit when `forceValidate` set to `true` (silverfire)
-- Bug #13118: Fixed `handleAction()` function in `yii.js` to handle attribute `data-pjax=0` as disabled PJAX (silverfire)
+- Bug #13118: Fixed `handleAction()` function in `yii.js` to handle attribute `data-pjax=0` as disabled PJAX (silverfire, arisk)
 - Bug #13128: Fixed incorrect position of {pos} string in ColumnSchemaBuilder `__toString` (df2)
 - Bug #13159: Fixed `destroy` method in `yii.captcha.js` which did not work as expected (arogachev)
 - Bug #13198: Fixed order of checks in `yii\validators\IpValidator` that sometimes caused wrong error message (silverfire)

framework/assets/yii.js

@@ -154,6 +154,7 @@ window.yii = (function ($) {
                 action = $e.attr('href'),
                 params = $e.data('params'),
                 pjax = $e.data('pjax') || 0,
+                usePjax = pjax !== 0 && $.support.pjax,
                 pjaxPushState = !!$e.data('pjax-push-state'),
                 pjaxReplaceState = !!$e.data('pjax-replace-state'),
                 pjaxTimeout = $e.data('pjax-timeout'),
@@ -164,7 +165,7 @@ window.yii = (function ($) {
                 pjaxContainer,
                 pjaxOptions = {};
 
-            if (pjax !== 0 && $.support.pjax) {
+            if (usePjax) {
                 if ($e.data('pjax-container')) {
                     pjaxContainer = $e.data('pjax-container');
                 } else {
@@ -190,13 +191,13 @@ window.yii = (function ($) {
 
             if (method === undefined) {
                 if (action && action != '#') {
-                    if (pjax !== 0 && $.support.pjax) {
+                    if (usePjax) {
                         $.pjax.click(event, pjaxOptions);
                     } else {
                         window.location = action;
                     }
                 } else if ($e.is(':submit') && $form.length) {
-                    if (pjax !== 0 && $.support.pjax) {
+                    if (usePjax) {
                         $form.on('submit',function(e){
                             $.pjax.submit(e, pjaxOptions);
                         })
@@ -249,7 +250,7 @@ window.yii = (function ($) {
                 oldAction = $form.attr('action');
                 $form.attr('action', action);
             }
-            if (pjax !== 0 && $.support.pjax) {
+            if (usePjax) {
                 $form.on('submit',function(e){
                     $.pjax.submit(e, pjaxOptions);
                 })