如何通过yii2框架中的特定ID通过Ajax从数据库检索数据

Question

I want to send ajax object from _form.php file to retrieve data from database against object value.

The ajax url file is regAjax.php , but the url is not found:

Error 404 found in console

_form.php:

<?= $form->field($vehicle, 'vehicleRegistrationNumber')->textInput(['maxlength' => true, 'id'=> 'regNum']) ?>

Ajax code:

$.ajax({
    type: 'POST',
    cache: false,
    data: { regNum: regNum },
    url: "<?php echo Url::toRoute('appointments/regAjax.php')?>",
    success: function(response) {
        console.log('success');
    }
});

AppointmentsController:

public function actionRegAjax()
{
   if(Yii::$app->request->isAjax) {
       $data = Yii::$app->request->post();
   } 
}

regAjax.php:

<?php
$regNum = $_POST['regNum'];
echo json_encode($regNum);
?>

Answer 1

As far as I understand that you want to retrieve data from actionRegAjax() function which is inside AppointmentsController .

Yii2 routing style works like below;

controller name and function name seperated by (/), and if any letter starts with uppercase then you have to seperate it with (-), so all you need to do is change URL in your ajax to

url: "appointments/reg-ajax",

Answer 2

$.ajax({
    type: 'POST',
    cache: false,
    data: { regNum: regNum },
    url: "<?= Url::to(['appointments/reg-ajax'])?>",
    success: function(response) {
        console.log(response);
    }
});

Your access to controller Action was not appropriate. Find the above appropriate method to do so.