CodeIgniter update record - php

Question

Controler
//class News
public function update($slug)
{
$this->load->helper('form');
$this->load->library('form_validation');
$data['news_item']=$this->news_model->get_news($slug);
if (empty($data['news_item']))
{
show_404();
}
$data['title'] = $data['news_item']['title'];
$this->load->view('templates/header', $data);
$this->load->view('news/update', $data);
//$this->load->view('save',$save);
$this->load->view('templates/footer');
}
Model new_model.php
//class News_model
public function get_news($slug = FALSE)
{
if($slug === FALSE)
{
$query = $this->db->get('news');
return $query->result_array();
}
$query = $this->db->get_where('news',array('slug'=>$slug));
return $query->row_array();
}
public function update_news($slug)
{
$query=$this->db->where('slug', $slug);
$this->db->update('news' ,$query);
return $query->row_array();
}
in update.php view file code given below..
view update.php file
<h2>Update New Item</h2>
<?php echo form_open('news/update') ?>
<label for="title">Title</label>
<input type="input" name="title" value="<?php echo $news_item['title']; ?>" readonly/><br>
<label for="text">Text</label>
<textarea name="text" cols="35" rows="16"><?php echo $news_item['text'];?></textarea><br>
save
</form>
data will be fetch but problemb is that when i click on "save" link page not found error generatos why?
how can call this view save.php file..

Answer 1

Change
save
to
<input type="submit" value="save" />

Answer 2

Here you have used link in-place of submit button.
When you use submit button it will post/get data on url that is there in the form action.
Here you can use :
<?php echo form_submit('mysubmit', 'Submit Post!'); ?>
It will produce...
<input type="submit" name="mysubmit" value="Submit Post!" />
For more details : Form Helper