[codeigniter] $this->session->set_flashdata() and then $this->session->flashdata() doesn't work in codeigniter

Please take a look at the following code:

$this->session->set_flashdata('message', 'This is a message.');
var_dump($this->session->flashdata('message'));

It returns bool(false).

I hope it doesn't NEED a redirect() to be recallable after that, because some times I need to call it right after setting the flashdata in a view.

Edit after venkat's comment

$this->session->set_flashdata('message', 'This is a message.');
$this->session->keep_flashdata('message');
var_dump($this->session->flashdata('message'));

No difference unfortunately.

flash message after redirect will available in controller not in view. to show in view get in controller's action and pass it view

Displaying a flash message after redirect in Codeigniter

In Your Controller set this

<?php

public function change_password(){







if($this->input->post('submit')){
$change = $this->common_register->change_password();

if($change == true){
$messge = array('message' => 'Password chnage successfully','class' => 'alert alert-success fade in');
$this->session->set_flashdata('item', $messge);
}else{
$messge = array('message' => 'Wrong password enter','class' => 'alert alert-danger fade in');
$this->session->set_flashdata('item',$messge );
}
$this->session->keep_flashdata('item',$messge);



redirect('controllername/methodname','refresh');
}

?>

In Your View File Set this
<script type="application/javascript">
/** After windod Load */
$(window).bind("load", function() {
  window.setTimeout(function() {
    $(".alert").fadeTo(500, 0).slideUp(500, function(){
        $(this).remove();
    });
}, 4000);
});
</script>

<?php

if($this->session->flashdata('item')) {
$message = $this->session->flashdata('item');
?>
<div class="<?php echo $message['class'] ?>"><?php echo $message['message']; ?>

</div>
<?php
}

?>

Please check below link for Displaying a flash message after redirect in Codeigniter

// Set flash data 
$this->session->set_flashdata('message_name', 'This is my message');
// After that you need to used redirect function instead of load view such as 
redirect("admin/signup");

// Get Flash data on view 
$this->session->flashdata('message_name');

Change your config.php:

$config['sess_use_database'] = TRUE;

To:

$config['sess_use_database'] = FALSE;

It works for me.

To set flashdata you need to redirect controller function

$this->session->set_flashdata('message_name', 'This is test message');

//redirect to some function
redirect("controller/function_name");

//echo in view or controller
$this->session->flashdata('message_name');