ajax page support

Author: himiklab

Diff for: README.md

@@ -91,17 +91,17 @@ For example:
 or
 
 ```php
-<?= \himiklab\yii2\recaptcha\ReCaptcha::widget([
-    'name' => 'reCaptcha',
-    'siteKey' => 'your siteKey',
-    'widgetOptions' => ['class' => 'col-sm-offset-3']
-]) ?>
+<?= $form->field($model, 'reCaptcha')->widget(\himiklab\yii2\recaptcha\ReCaptcha::className()) ?>
 ```
 
 or
 
 ```php
-<?= $form->field($model, 'reCaptcha')->widget(\himiklab\yii2\recaptcha\ReCaptcha::className()) ?>
+<?= \himiklab\yii2\recaptcha\ReCaptcha::widget([
+    'name' => 'reCaptcha',
+    'siteKey' => 'your siteKey',
+    'widgetOptions' => ['class' => 'col-sm-offset-3']
+]) ?>
 ```
 
 or simply
@@ -110,10 +110,6 @@ or simply
 <?= \himiklab\yii2\recaptcha\ReCaptcha::widget(['name' => 'reCaptcha']) ?>
 ```
 
-Notes
------
-Exclude a reCaptcha field from ajax validation. It creates problem.
-
 Resources
 ---------
 * [Google reCAPTCHA](https://developers.google.com/recaptcha)

Diff for: ReCaptcha.php

@@ -91,6 +91,7 @@ class ReCaptcha extends InputWidget
 
     public function run()
     {
+        $view = $this->view;
         if (empty($this->siteKey)) {
             /** @var ReCaptcha $reCaptcha */
             $reCaptcha = Yii::$app->reCaptcha;
@@ -102,12 +103,12 @@ public function run()
         }
 
         if (self::$firstWidget) {
-            $view = $this->view;
             $arguments = http_build_query([
                 'hl' => $this->getLanguageSuffix(),
                 'render' => 'explicit',
                 'onload' => 'recaptchaOnloadCallback',
             ]);
+
             $view->registerJsFile(
                 self::JS_API_URL . '?' . $arguments,
                 ['position' => $view::POS_END, 'async' => true, 'defer' => true]
@@ -117,21 +118,23 @@ public function run()
 var recaptchaOnloadCallback = function() {
     jQuery(".g-recaptcha").each(function() {
         var reCaptcha = jQuery(this);
-        var recaptchaClientId = grecaptcha.render(reCaptcha.attr("id"), {
-            "callback": function(response) {
-                jQuery("#" + reCaptcha.attr("input-id")).val(response).trigger("change");
-                if (reCaptcha.attr("data-callback")) {
-                    eval("(" + reCaptcha.attr("data-callback") + ")(response)");
-                }
-            },
-            "expired-callback": function() {
-                jQuery("#" + reCaptcha.attr("input-id")).val("");
-                if (reCaptcha.attr("data-expired-callback")) {
-                     eval("(" + reCaptcha.attr("data-expired-callback") + ")()");
-                }
-            },
-        });
-        reCaptcha.data("recaptcha-client-id", recaptchaClientId);
+        if (reCaptcha.data("recaptcha-client-id") == undefined) {
+            var recaptchaClientId = grecaptcha.render(reCaptcha.attr("id"), {
+                "callback": function(response) {
+                    jQuery("#" + reCaptcha.attr("input-id")).val(response).trigger("change");
+                    if (reCaptcha.attr("data-callback")) {
+                        eval("(" + reCaptcha.attr("data-callback") + ")(response)");
+                    }
+                },
+                "expired-callback": function() {
+                    jQuery("#" + reCaptcha.attr("input-id")).val("");
+                    if (reCaptcha.attr("data-expired-callback")) {
+                         eval("(" + reCaptcha.attr("data-expired-callback") + ")()");
+                    }
+                },
+            });
+            reCaptcha.data("recaptcha-client-id", recaptchaClientId);   
+        }
     });
 };
 JS
@@ -140,6 +143,10 @@ public function run()
             self::$firstWidget = false;
         }
 
+        if (Yii::$app->request->isAjax) {
+            $view->registerJs('recaptchaOnloadCallback();', $view::POS_END);
+        }
+
         $this->customFieldPrepare();
         echo Html::tag('div', '', $this->buildDivOptions());
     }