[Solved]Another Pagination problem

[eluser]bondjp[/eluser]
Hi guys, i have a problem with pagination.
I have a form where the user chooses several parameters using a dropdown box.
i can show the results of the form_submit on my 1st pagination page.
When selecting "2" i get a blank page. I know that i need to use sessions so that my POST passes to the other pages.
My question is how can i do it?
I've been searching the forum all day but i didn't found any example that matches my problem.
I appreciate if anyone could help me.

My code:

Home_View

Code:

<?php
    echo form_open('results');
    foreach($model as $row):
    $mod[$row->model] = &$row->model;
    endforeach;
    foreach($brand as $row):
    $bra[$row->brand] = &$row->brand;
    endforeach;
    foreach($city as $row):
    $cit[$row->city] = &$row->city;
    endforeach;
            
?>
    <h3> Brand: &lt;?php echo form_dropdown('brand', $mod);?&gt;</h3>
            
    <h3> Model: &lt;?php echo form_dropdown('model', $bra);?&gt;</h3>
            
    <h3> City: &lt;?php echo form_dropdown('city', $city);?&gt;</h3>
    <br>
    &lt;input type="image" src="&lt;?php echo base_url();?&gt;images/search.png" alt="Submit button"&gt;
            
    &lt;?php echo form_close(); ?&gt;
    &lt;/form&gt;

Controller

Code:

$limit=4;
            
$config['base_url'] = base_url().'index.php/results/index/';
$total = count($this->Results->numCars());
$config['per_page'] = 2 ;
$config['uri_segment']= 3;
$config['total_rows'] = $total;
$config['full_tag_open']= '<div id="pagination">';
$config['full_tag_close']='</div>';
$this->pagination->initialize($config);
            
$data['brands'] = $this->Results->searchBrand();
$data['models'] = $this->Results->searchModel();
$data['cities'] = $this->Results->searchCity();
$data['cars'] = $this->Results->searchCars($limit,$offset);

            
$this->load->view('results', $data);

Model

Code:

function searchCars($limit, $offset){
$model = $this->input->post('model');
$brand = $this->input->post('brand');
$city = $this->input->post('city');
.....
.....
$query = $this->db->get('cars',$limit,$offset);
foreach($query->result() as $row){
    $data[] = $row;
}
        
$query->free_result();
return $data;

Results_View

Code:

//Form is available in the results view so users can search other info withou going to home_view

<?php
    echo form_open('results');
    foreach($model as $row):
    $mod[$row->model] = &$row->model;
    endforeach;
    foreach($brand as $row):
    $bra[$row->brand] = &$row->brand;
    endforeach;
    foreach($city as $row):
    $cit[$row->city] = &$row->city;
    endforeach;
            
?>
    <h3> Brand: &lt;?php echo form_dropdown('brand', $mod);?&gt;</h3>
            
    <h3> Model: &lt;?php echo form_dropdown('model', $bra);?&gt;</h3>
            
    <h3> City: &lt;?php echo form_dropdown('city', $city);?&gt;</h3>
    <br>
    &lt;input type="image" src="&lt;?php echo base_url();?&gt;images/search.png" alt="Submit button"&gt;
            
    &lt;?php echo form_close(); ?&gt;
    &lt;/form&gt;
....
&lt;?php echo $row->model;?&gt;
<br>
&lt;?php echo $row->brand;?&gt;
<br>
&lt;?php echo $row->city;?&gt;
.....
&lt;?php echo $this->pagination->create_links(); ?&gt;

[eluser]bondjp[/eluser]
Can someone help me on this one?
Thanks.

[eluser]Craig300[/eluser]
I came across this problem a few weeks ago and I ended up modifying the core Pagination.php library to use form buttons instead of links so that the search parameters can be posted through instead of using sessions, which is still a valid way of course. By using form buttons, you can pass the search criteria, either singularly or in an array, to the next page in order to perform the search again.

Hope this helps

[eluser]bondjp[/eluser]
[quote author="Craig300" date="1266429428"]I came across this problem a few weeks ago and I ended up modifying the core Pagination.php library to use form buttons instead of links so that the search parameters can be posted through instead of using sessions, which is still a valid way of course. By using form buttons, you can pass the search criteria, either singularly or in an array, to the next page in order to perform the search again.

Hope this helps [/quote]

Thanks.
I'm new to codeigniter so this is a bit over the top for me.
Do you have any example code i can see to understand how to do it?

[eluser]LuckyFella73[/eluser]
Maybe this thread is helpfull:
http://ellislab.com/forums/viewthread/44845/P15/

POST #21 seems to be a quite simple and nice solution.

[eluser]bondjp[/eluser]
Ok. Followed the link and here's what i got.
I needed to change db_session to session or i get an error saying it doesn't recognizes db_session.

Code:

if ($_POST['brand']) {
        
        $this ->session->set_userdata('brands', $this -> input -> post('brand'));
    $this ->session->set_userdata('models', $this -> input -> post('model'));
    $this ->session->set_userdata('cities', $this -> input -> post('city'));

            }    
            
    $query = $this -> userdata->searchCars($params);

Now i get this error:

A PHP Error was encountered

Severity: Notice

Message: Undefined property: Results::$userdata

Filename: controllers/results.php

Line Number: 77

Fatal error: Call to a member function searchCars() on a non-object in \controllers\results.php on line 77

How to proceed from here?
Thanks

[eluser]bondjp[/eluser]
Success! Lol, managed to get it working like this:

Controller

Code:

if ($this->input->post('brand')) {
            
    $this ->session->set_userdata('brands', $this -> input -> post('brand'));
    $this ->session->set_userdata('models', $this -> input -> post('model'));
    $this ->session->set_userdata('cities', $this -> input -> post('city'));
}

Model

Code:

$brand = $this->session->userdata('brands');
$model = $this->session->userdata('models');
$city = $this->session->userdata('cities');

Thanks guys.
On to the next problem

[eluser]Guerra[/eluser]
Hi all, I encountered the same problem. When i pagination search results - page 2 is blank I tried to use sessions, but nothing does not work
How do I send the post data from the controller in the model through the session?