url - Codeigniter load different site content foreach possible filter selection -

i have 2 input fields. in first filter user can select category, subcategory , in second filter user can choose product. upon submitting form, user gets redirected site based on selection in input fields.

    $category = $this->input->post('category', true);     $product = $this->input->post('product', true);      if(isset($category) && $sub_category == ''){         redirect(base_url().'/category/'.$category);     }elseif(isset($category) && isset($product)){         redirect(base_url().'/category/'.$category.'/product/'.$product);     }else{         $this->session->set_flashdata('error', 'you must select category');         redirect($_server['http_referer']);     } 

creating urls , redirecting them based on user's input selection works fine. cannot head around how different view-content each site. each possible combination of category , product has own content. how can load individual content each possible url? hint!

try url

$category = $this->input->post('category', true); $product = $this->input->post('product', true); $url =array(); if($category){     $url[] = 'category/'.$category; } if($product){     $url[] ='product/'.$product; } $newurl = implode('/',$url); redirect($newurl);