Why is $_GET passed instead of $_POST?

Question

Yii

There is a form in the view file that is responsible for passing the model data entered in the field to adding it to the database:

<form>
<?php $form = ActiveForm::begin(['action' =>['site/editdata'], 'id' => 'form-editdata', 'method' => 'post',]); ?>
    <div class="input-block">
        <p>Фамилия и Имя Отчество*</p>
        <p><?php echo Yii::$app->user->identity->fio;?></p><br>
        <input type="text" name="EditdataForm[fio]" class="input__item">
    </div>
    <div class="input-block clearfix">
        <div class="col-sm-6">
            <div class="left-input">
            <div class="row">
                <p>Мобильный телефон*</p>
                   <p><?php echo Yii::$app->user->identity->phone;?></p><br>
                    <input type="text" name="EditdataForm[phone]" class="input__item">
            </div>
        </div>
    </div>
    <div class="col-sm-6">
        <div class="row">
            <div class="right-input">
                <div class="post-input">
                    <p>Электронная почта *</p>
                    <p><?php echo Yii::$app->user->identity->email;?></p><br>
                    <input type="text" name="EditdataForm[email]" class="input__item">
                </div>
            </div>
        </div>
    </div>
    <div class="input-block">
        <?= Html::submitButton('Сохранить', ['class' => 'save__btn', 'name' => 'editdata-button']) ?>
    </div>
<?php ActiveForm::end(); ?>
</form>

The site/editdata code is as follows:

<?php $form = ActiveForm::begin(['id' => 'form-editdata']); ?>
    <?= $form->field($model, 'fio')->textInput(['autofocus' => true]) ?>
    <?= $form->field($model, 'email') ?>
    <?= $form->field($model, 'street') ?>
    <?= $form->field($model, 'house') ?>
    <?= $form->field($model, 'housing') ?>
    <?= $form->field($model, 'apartment') ?>
    <?= $form->field($model, 'phone') ?>
    <?= $form->field($model, 'password')->passwordInput() ?>
    <div class="form-group">
        <?= Html::submitButton('Edit', ['class' => 'btn btn-primary', 'name' => 'signup-button']) ?>
    </div>
<?php ActiveForm::end(); ?>

EditdataForm model function:

public function editdata()
{
    if (!$this->validate()) {
        return null;
    }

    $user = new User();
    $user->username = $this->username;
    $user->email = $this->email;
    $user->fio = $this->fio;
    $user->apartment = $this->apartment;
    $user->house = $this->house;
    $user->housing = $this->housing;
    $user->street = $this->street;
    $user->phone = $this->phone;
    $user->setPassword($this->password);
    return $user->save() ? $user : null;
}

And controller:

public function actionEditdata()
{
    return $this->render('editdata');
}

By clicking the "Save" button, instead of sending a $_POST request, a $_GET is generated, which is written to the address bar, $_POST is empty.
Absolutely the same registration implementation works, that is, it generates a $_POST request and passes it where necessary.
The only thing is that the page on which the original form is located is part of the module and is located at the address modules/privateCabinet/views, but I don’t think that this should somehow affect the fact that $_GET is passed instead of $_POST, although it is indicated back in the form:

ActiveForm::begin(['action' =>['site/editdata'], 'id' => 'form-editdata', 'method' => 'post',])

Answer 1

See what you get in HTML