Pass button id to controller from view

Hey guys can i pass my button id to controller?

I need this to make a select in Model.


View button code. 

Code:

<button class="btn btn-primary" data-book-id="<?php echo $historico->codigo ?>" data-target="#form-modal" data-toggle="modal">Visualizar</button>

You can set the value attribute of the button

Code:

<button class="btn btn-primary" name="button_name" value="<?php echo $id_to_set ?>" data-book-id="<?php echo $historico->codigo ?>" data-target="#form-modal" data-toggle="modal">Visualizar</button>

In the controller, you can get the set value like this

PHP Code:

$id = $this->input->post('button_name');