yii2 append data through renderAjax missing in post data
<p>I have two model A and B , In Model A form append Model B from dynamically,but when am click create button ,I am not getting model B data in POST.where I am doing wrong please help..</p>

<p>Model A  Form(view)</p>

<pre><code>       &lt;?php
        use yii\helpers\Html;
        use yii\widgets\ActiveForm;
        use yii\helpers\Url;
        use yii\web\View;
        $script = &lt;&lt;&lt; JS

        $.ajax({
        type     :'POST',            
        data: {total_form:1},
        cache    : true,
        url  : '/stag_str/web/index.php/activities/create',
        success  : function(data) {
        $('.p_scents').append(data);
        },
        });

        JS;
        $this-&gt;registerJs($script);
        ?&gt;

        &lt;div class="currency-form"&gt;

        &lt;?php $form = ActiveForm::begin(); ?&gt;

        &lt;?= $form-&gt;field($model, 'currency_name')-&gt;textInput(['maxlength' =&gt; true,'style'=&gt;'width:150px']) ?&gt;
        &lt;div class="p_scents"&gt;&lt;/div&gt;
        &lt;div class="form-group"&gt;
        &lt;?= Html::submitButton($model-&gt;isNewRecord ? Yii::t('app', 'Create') : Yii::t('app', 'Update'), ['class' =&gt; $model-&gt;isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?&gt;
        &lt;/div&gt;

        &lt;?php ActiveForm::end(); ?&gt;

        &lt;/div&gt;
</code></pre>

<p>Model A controller</p>

<pre><code>      public function actionCreate(){
        $model = new Currency();

        if ($model-&gt;load(Yii::$app-&gt;request-&gt;post())) {
        print_r($_POST);exit;
        return $this-&gt;redirect(['view', 'id' =&gt; $model-&gt;currency_id]);
        } else {
        return $this-&gt;render('create', [
        'model' =&gt; $model,
        ]);
        }
      }
</code></pre>

<p>Model B Form which  I am rendering through Ajax call</p>

<pre><code>            &lt;?php

        use yii\helpers\Html;
        use yii\widgets\ActiveForm;

        /* @var $this yii\web\View */
        /* @var $model app\models\Activities */
        /* @var $form yii\widgets\ActiveForm */
        ?&gt;

        &lt;div class="activities-form"&gt;

         &lt;?php $form = ActiveForm::begin(['id' =&gt; 'activity' ]); ?&gt;

        &lt;?= $form-&gt;field($model, 'activity_name')-&gt;textInput(['maxlength' =&gt; true]) ?&gt;

        &lt;?php ActiveForm::end(); ?&gt;

        &lt;/div&gt;
</code></pre>

<p>Model B action using renderAjax</p>

<pre><code>            public function actionCreate()
        {
            $model = new Activities();

            if ($model-&gt;load(Yii::$app-&gt;request-&gt;post()) &amp;&amp; $model-&gt;save()) {
                return $this-&gt;redirect(['view', 'id' =&gt; $model-&gt;activity_id]);
        } elseif ( Yii::$app-&gt;request-&gt;isAjax ){
           return $this-&gt;renderAjax('_form', [
                'model' =&gt; $model,
           ]);
        }

        }
</code></pre>

<p>I am not getting Model B form data while saving Model form A..</p>