How to implement yii2 basic datepicker

Hi, I want to use the datepicker in yii2 basic but I could not show the datepicker in my form,

<?php


use yii\helpers\Html;

use yii\bootstrap\ActiveForm;





?>


<div class="row">

    <div class="col-lg-6">


<div class="myproj-index">


    <?php $form = ActiveForm::begin(['layout' => 'horizontal']); ?>

        <? //$form->field($model, 'periodfrom')

           echo DatePicker::widget([

               'model' => $model,

               'attribute' => 'periodfrom',

               'language' => 'en',

               'dateFormat' => 'yyyy-MM-dd',

           ]);




        ?>

    

    

        <div class="form-group">

            <?= Html::submitButton('Submit', ['class' => 'btn btn-primary']) ?>

        </div>

    <?php ActiveForm::end(); ?>


</div>

</div>

</div>

Thank you in advance

First ensure you have the necessary "use" statement at the top of the file eg use yii\jui\DatePicker

You need something like:

$form->field($model, 'periodfrom')->widget(DatePicker::classname(), [

               'clientOptions' => [

               'language' => 'en',

               'dateFormat' => 'yyyy-MM-dd',

           ]

        ]

Thank you for the quick reply,I already declare yii\jui\DatePicker from the top of my script, but I’m getting error

Thank you in advance

Use it like this:

   ->widget(DatePicker::class, [

                'clientOptions' => [

                'language' => 'en',

                'dateFormat' => 'yyyy-MM-dd',

            ]

        ])

change the class reference to → ::class

And install the library, by following the steps in here:

if the command:

php composer.phar require --prefer-dist yiisoft/yii2-jui

doesnt work for you, just run

composer.phar require --prefer-dist yiisoft/yii2-jui

Then run

php composer.phar require --prefer-dist yiisoft/yii2-jui

This will update you composer.json, now you just need to install the dependency by using command:

php composer install 

or

composer intall