how to use pagination with functions that have parameters

[eluser]Unknown[/eluser]
hello everybody
I have a big problem and I wish to help me: :down:
in a class posts there is this function

Code:

function view($id)
        {
        
         $this->load->model('posts_model');
         $this->load->library('pagination');
         $config['base_url'] = base_url()."index.php/posts/view/".$id."/";
         $config['total_rows'] = $this->posts_model->get_num_rows($id);
         $config['per_page'] = 3;
         $config['num_links'] = 2;
         $this->pagination->initialize($config);          
         $offset= $this->uri->segment(4) ;    
         $data['post'] = $this->posts_model->get_topic_by_id($id,$config['per_page'],$offset);
         $this->load->view('posts_view',$data);
        }

but pagination didn't worked at all
and I have to keep the base_url as written up
if you know any way please help me as soon as possible