yii2 append data through renderAjax missing in post data - php

Question

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..
Model A Form(view)
<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
use yii\helpers\Url;
use yii\web\View;
$script = <<< 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;
$this->registerJs($script);
?>
<div class="currency-form">
<?php $form = ActiveForm::begin(); ?>
<?= $form->field($model, 'currency_name')->textInput(['maxlength' => true,'style'=>'width:150px']) ?>
<div class="p_scents"></div>
<div class="form-group">
<?= Html::submitButton($model->isNewRecord ? Yii::t('app', 'Create') : Yii::t('app', 'Update'), ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
</div>
<?php ActiveForm::end(); ?>
</div>
Model A controller
public function actionCreate(){
$model = new Currency();
if ($model->load(Yii::$app->request->post())) {
print_r($_POST);exit;
return $this->redirect(['view', 'id' => $model->currency_id]);
} else {
return $this->render('create', [
'model' => $model,
]);
}
}
Model B Form which I am rendering through Ajax call
<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
/* #var $this yii\web\View */
/* #var $model app\models\Activities */
/* #var $form yii\widgets\ActiveForm */
?>
<div class="activities-form">
<?php $form = ActiveForm::begin(['id' => 'activity' ]); ?>
<?= $form->field($model, 'activity_name')->textInput(['maxlength' => true]) ?>
<?php ActiveForm::end(); ?>
</div>
Model B action using renderAjax
public function actionCreate()
{
$model = new Activities();
if ($model->load(Yii::$app->request->post()) && $model->save()) {
return $this->redirect(['view', 'id' => $model->activity_id]);
} elseif ( Yii::$app->request->isAjax ){
return $this->renderAjax('_form', [
'model' => $model,
]);
}
}
I am not getting Model B form data while saving Model form A..

Answer 1

Ideally, when you are dealing with AJAX Calls from View. you Must provide an ID to your form as below;
$form = ActiveForm::begin([ 'id' => 'activity-form' ]);
when you handle any kind of request inside the Controllers, you must first check the type of request when you re-render your form as below
elseif ( Yii::$app->request->isAjax ){
return $this->renderAjax('_form', [
'model' => $model,
]);
}