yii2 create a button without any model field
<p>I need to have two buttons on my home page, Login and Register. When user click on Login button I need to render a LoginView, while on Register button there will be RegisterView. 
I see these questions but these also have fields in model(dynamic model):</p>

<p><a href="https://stackoverflow.com/questions/32368084/activeform-without-model-yii2">ActiveForm without model yii2</a></p>

<p><a href="https://stackoverflow.com/questions/28331492/yii2-create-a-form-without-a-model/30389428">Yii2 create a form without a model</a></p>

<p>I don't want to use any model field, I only want to render different view on click event to different buttons. 
Or in other words, how can I set a button to call specific controller's action on its click event?</p>

<p>How this can be done with Yii2 framework.</p>