I want to create two submit button in my form. The first button (I use Html::submitButton) link to actionCreate in Controller redirect to index. I want to redirect the second button to its form but it doesn't work. Here is my second button: 
<?= Html::a('<span class="glyphicon glyphicon-floppy-disk"></span>  Save', ['simpan'], ['class' => 'btn btn-primary']) ?>
and this is my actionSimpan in Controller
public function actionSimpan()
{
    $model = new Armada();
    if ($model->load(Yii::$app->request->post())) {
        // get the instance of the uploaded file 
        $imageName = $model->NAMA_ARMADA; 
        $model->photo = UploadedFile::getInstance($model,'photo');
        $model->photo->saveAs('uploads/'.$imageName.'.'.$model->photo->extension);
        //save the path in the column 
        $model->IMG_ARMADA = 'uploads/'.$imageName.'.'.$model->photo->extension; 
        $model->save();
        return $this->redirect(['index']);
    }
    return $this->render('create', [
        'model' => $model,
    ]);
}
I tried the Html::submitInput but it doesn't work. What should I do to make it work? Thank you! 
 
     
     
     
    