how to save radio button has been selected at the time the page is reloaded?

Question

how to save radio button has been selected at the time the page is reloaded? suppose I have selected some of the radio button and then reload the browser page. but after the page is reloaded radio buttons have been still the same. I use Codeigniter.

here is my view code

<div class="container">
<?php
$no=1;
foreach($hasil->result() as $row):
?>
<form action="<?php echo base_url();?>mahasiswa/hasil" method="post" class="form" enctype="multipart/form-data" name="form" onsubmit="stopCounter();">
<input type="hidden" name="id_soal[<?php echo $row->id_soal;?>]" value="<?php echo $row->id_soal;?>" />
<table>
  <tr>
    <td colspan="2">&nbsp;</td>
  </tr>
  <tr>
    <td><b><?php echo $no.'.&nbsp;';?></b></td>
    <td><?php echo $row->pertanyaan;?></td>
  </tr>
  <tr>
    <td rowspan="5">&nbsp;</td>
    <td><span class="radio"><label><input type="radio" name="jawab[<?php echo $row->id_soal;?>]" value="A" />a.&nbsp;<?php echo $row->a;?></label></span></td>
  </tr>
  <tr>
    <td><span class="radio"><label><input type="radio" name="jawab[<?php echo $row->id_soal;?>]" value="B" />b.&nbsp;<?php echo $row->b;?></label></span></td>
  </tr>
  <tr>
    <td><span class="radio"><label><input type="radio" name="jawab[<?php echo $row->id_soal;?>]" value="C" />c.&nbsp;<?php echo $row->c;?></label></span></td>
  </tr>
  <tr>
    <td><span class="radio"><label><input type="radio" name="jawab[<?php echo $row->id_soal;?>]" value="D" />d.&nbsp;<?php echo $row->d;?></label></span></td>
  </tr>
  <tr>
    <td><span class="radio"><label><input type="radio" name="jawab[<?php echo $row->id_soal;?>]" value="E"/>e.&nbsp;<?php echo $row->e;?></label></span></td>
  </tr>
<?php
$no++;
?>
<input type="hidden" name="id_sesi" value="<?php echo $row->id_sesi;?>" />
<input type="hidden" name="jumlah" value="<?php echo $jumlah;?>" />
<?php
endforeach;
?>
  <tr>
    <td colspan="2">&nbsp;</td>
  </tr>
  <tr>
    <td colspan="2"><input type="submit" value="Selesai" class="btn btn-default"/></td>
  </tr>
</table>
</form>
</div>

here my controller code

public function mulai_tes(){
        $id=$this->uri->segment(3);
        $this->load->model('m_mahasiswa');
        $result=$this->m_mahasiswa->data_mahasiswa();
        foreach($result->result() as $row):
            $data['user']=$row->username;
            $data['nama']=$row->nama;
        endforeach;
        $cek=$this->m_mahasiswa->validasi_tes($id,$data['user']);
        foreach($cek->result() as $c){
            if($c->id_sesi==$id){ ?>
                <script type="text/javascript" language="javascript">
                alert("Anda telah mengikuti tes soal ini");
                </script>
        <?php
        echo "<meta http-equiv='refresh' content='0; url=".base_url()."mahasiswa/tes'>";
            }
        }
        $data['hasil']=$this->m_mahasiswa->mulaites($id);
        $data['jumlah']=$data['hasil']->num_rows();
        $data['judul']='Mulai Tes';
        $this->load->view('elearning/template',$data);
    }

How I set cookie and where I can put cookie code in controller?

Answer 1

1. Check which radio(s) was selected in controler (http://ellislab.com/codeigniter%20/user-guide/libraries/input.html).
2. Pass this data to view (http://ellislab.com/codeigniter/user-guide/general/views.html).
3. Mark radio(s) as selected within view depending on data passed by controller (Assign an initial value to radio button as checked).