function filter_cursos(){
    $ret = new StdClass();
    $ret->success = false;

    if( !isset($_POST['s']) || !isset($_POST['cats']) || !isset($_POST['location']) ){
        //error
        //TODO BOTAR HTML DE ERRO BONITINHO
        do_json($ret);
        exit;
    }

    $args = [
        'suppress_filters' => false,
        'fields' => 'ids',
        'numberposts' => get_option( 'posts_per_page' ),
        'offset' => get_option( 'posts_per_page' ) * $_POST['offset'],
        'post_type' => 'curso',
      ];


      if( !(empty($_POST['s']) ) ){
        $args += [
          's' => $_POST['s'] ,
        ]; //Se tem filtro adicionamos os campos para filtrar por busca
      }
      if(! empty($_POST['cats']) ){
        $args += ['category__in' => (!empty($_POST['cats'])) ? explode(',', $_POST['cats']) : [],];

      }
      if(!empty($_POST['location'])){
          $args += [  //added locais de turmas
            'meta_query' => array(
              'relation' => 'OR',
              array(
                  'key' => 'datas_%_localizacao',
                  'compare' => 'IN',
                  'value' => (!empty($_POST['location'])) ? explode(',', $_POST['location']) : [],
              )
            ),//end meta_query
        ];
      }
      //tratando os titulos
      if(!empty($_POST['s'])){
          $ret->title = 'Course search results for <strong>"'.$_POST['s'].'"</strong>';

        }elseif(!empty($_POST['cats']) && empty($_POST['location'])){

            $ret->title = 'Course search results by <strong>Competency</strong>';
        }elseif(!empty($_POST['location']) && empty($_POST['cats'])){

            $ret->title = 'Course search results by <strong>Location</strong>';
        }elseif( !empty($_POST['cats']) && !empty($_POST['location'])  ){

            $ret->title = 'Course search results by <strong>Competency and Location</strong>';
        }else{
            $ret->title = 'Recent <ewrwerstrong>Learning Experiences</strong>';
        }

    $cursos = get_posts($args);
    ob_start();
    foreach($cursos as $post_id):

        include TEMPLATEPATH.'/bloco-curso.php';

    endforeach;
    $ret->html = ob_get_clean();
    if (empty($cursos)) {
        $ret->title = 'Your search did not match any of the above.';
    }

    $ret->success = true;
    do_json($ret);
}