How to make a checkbox? if (checkbox) set to enable filter by field

How to make sure that if (checkbox) is set, then enable the filter by sport_id field and only those lines are displayed where in the sport_id field there is '1'. Oracle Database

<form action=" " method="post">
  <input type="checkbox" name="sport_id" value="1">
</form>

<div class="col-xs-6 col-md-3">
 <p></p>
 <div class="checkbox">
   <label>
     <?php echo form_checkbox('sport_id', sport::checkboxValid(), 
        ($this->input->get('sport_id') > 0) ? 'checked="checked"' : '')?>
   </label>
 </div>
</div>