post方法不能以yii2活动形式工作

I have created active form in my yii2 application with following code

$form = ActiveForm::begin([
    'id' => 'deposit-form',
    'enableClientValidation' => true,
    'fieldConfig' => [
        'template' => '{input}{error}',
        'options' => [
            'tag' => false
        ]
    ],
    'action' => 'create',
    'options' => [
        'class' => 'form-horizontal',
        'method' => 'post',
    ]
])

however my form is not displaying any mthod i.e, get or post. output of my form is

<form role="form" class="form-horizontal">

I wan't it as <form role="form" class="form-horizontal" method="POST">

How to achieve following result I also tried this code

$form = ActiveForm::begin([
    'id' => 'deposit-form',
    'enableClientValidation' => true,
    'fieldConfig' => [
        'template' => '{input}{error}',
        'options' => [
            'tag' => false
        ]
    ],
    'action' => 'create',
    'method' => 'post',
    'options' => [
        'class' => 'form-horizontal',

    ]
])

In the official documentation:

$method public property:
The form submission method. This should be either 'post' or 'get'. Defaults to 'post'.

$form = ActiveForm::begin([
    'method' => 'get',
    'action' => ['controller/action'],
]);

Use Following, you can add other properties also. Your code is also correct, but I think you are not ending your form.

<?php   $form = \yii\bootstrap\ActiveForm::begin([
                'id' => 'deposit-form',
                'enableClientValidation' => true,
                'method'=>'post'
            ]);
            \yii\bootstrap\ActiveForm::end();

?>