jQuery in Yii2 view file

Question

This is my form code:

<?= $form->field($model, 'stdclass_id')->dropDownList($stdclassArray,
    ['prompt' => 'Select','id' => 'selectedclass'])->label('Class') ?>

<?= $form->field($model, 'session_id')->dropDownList($sessionArray,
    ['prompt' => 'Select', 'id' => 'selectedsession',])->label('Session') ?>

<?= $form->field($model, 'roll_no')->textInput(['maxlength' => true, 'id' => 'roll']) ?>

And this is the jQuery part of the form:

$script = <<< JS

$('#selectedsession').on('change',function(){
    var value1 = document.getElementById("selectedclass").value;
    var value2 = document.getElementById("selectedsession").value;

    $.ajax({
        url: '<?php echo Yii::$app->request->baseUrl. '/enrollment/rollno' ?>',
        type: "POST",
        data: { value1: value1, value2 : value2 },
        success: function(data) {
            var abc = data;
            $("#roll").val(abc);
        }
    });
});

JS;

This produces the following error:

Undefined Variable: app

I'm not able to use yii::$app.

I also included use yii\helpers\Url;

Muhammad Umair
– Muhammad Umair

2016-03-24 11:23:10 +00:00
Commented Mar 24, 2016 at 11:23 — Muhammad Umair
– Muhammad Umair, Commented Mar 24, 2016 at 11:23

Fabrizio Caldarelli · Accepted Answer · 2016-03-24 11:30:20Z

2

Extract php variables from here doc.

$baseUrl = Yii::$app->request->baseUrl;

$script = <<< JS

$('#selectedsession').on('change',function(){
var value1 = document.getElementById("selectedclass").value;
var value2 = document.getElementById("selectedsession").value;

$.ajax({

             url: '{$baseUrl}/enrollment/rollno',
             type: "POST",
             data: { value1: value1, value2 : value2 },
             success: function(data) {
                 var abc = data;
                $("#roll").val(abc);
             }
         });
});

JS;

answered Mar 24, 2016 at 11:30

Fabrizio Caldarelli

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1 Comment

Muhammad Umair Over a year ago

Thanks buddy. You made my day :)

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