Session Class: flashdata() "server request"?

[eluser]Unknown[/eluser]
Hi people,

As I read from CI User Guide

CodeIgniter supports "flashdata", or session data that will only be available for the next server request, and are then automatically cleared.

May I know what does it mean by saying "next server request"?

Let say I do an

Code:

echo $this->session->flashdata('test');

then is it considered as a "server request"?

This is my problem, please take a look at my sample code below.

At my Model.

Code:

function check(param)
{
   if(user_exist)
   {
      if(activated)
      {
         return TRUE;
      }else
      {
         $this->session->set_flashdata('key','User not activated');
      }
   }else
   {
      $this->session->set_flashdata('key','Invalid username or password');
   }
}

At my Controller I did not call the flashdata

At my View.

Code:

if ($this->session->flashdata('key'))
{
   echo '<div class="error">' . $this->session->flashdata('key') . '</div>';
}

When I do like above, an error message will show 2 times even the condition is different.
For e.g. for an record that not activated
- 1st time: Key in correct username and password --> Show 'User not activated'
- 2nd time: Key in invalid username and password --> Still show 'User not activated'
- 3rd time: Key in invalid username and password --> Change to 'Invalid username or password'

How can I solve this problem? I still want to use flashdata instead of sending data array to the View.

Thank you so much!