Admin.php

    public function edit_article($id) {
        if(isset($_POST['article'])):
            $data = $_POST;

            $article_types = array();
            if(isset($data['article_types'])):
                $article_types = $data['article_types'];
                unset($data['article_types']);
            endif;

            if(isset($data['price'])):
                $data['price'] = number_format((float)$data['price'], 2, '.', '')*100;
            endif;

            // PRICELEVELS
            if(isset($data['group_id'])):
                if(isset($data['group_price'])):
                    $counter = 0;
                    $group_prices = array();

                    foreach($data['group_price'] as $group_price):
                        array_push($group_prices, array($data['group_id'][$counter], number_format((float)$group_price, 2, '.', '' )*100));
                        $counter++;
                    endforeach;
                    echo "<script>console.log('GROUP_PRICES ".print_r($group_prices)."');</script>";

                    $index = 0;
                    $group_price_active = array();
                    if(isset($data['pricelevel_checked_array'])):
                        echo "<script>console.log('PRICELEVEL_CHECKED_ARRAY ".print_r($data['pricelevel_checked_array'])."');</script>";

                        foreach($data['pricelevel_checked_array'] as $pricelevel_checked):
                            if($pricelevel_checked):
                                array_push($group_price_active, $group_prices[$index]);
                            endif;
                            $index++;
                        endforeach;
                        unset($data['pricelevel_checked_array']);
                    endif;
                    unset($data['group_price']);
                endif;
                unset($data['group_id']);
            endif;
            echo "<script>console.log('GROUP_PRICES_ACTIVE ".print_r($group_price_active)."');</script>";

            if(isset($data['active'])):
                $data['active'] = 1;
            else:
                $data['active'] = 0;
            endif;

            $data['edit_date'] = time();
            $data['user_id'] = $this->ion_auth->get_user_id();

            $this->m_articles->edit_article($data, $id, $article_types, $group_price_active);

            $this->session->set_flashdata('succes', $this->lang->line('edit_success'));
            redirect('/administrator/articles', 'refresh');
        else:
            $data['article_types'] = $this->m_articles->get_article_types();

            $article = $this->m_articles->get_article($id);
            $types = $this->m_articles->get_article_types_for_article($id);
            $article->types = $types->result();
            $data['article'] = $article;

            // PRICELEVELS
            $data['user_groups_order'] = $this->m_users->get_all_user_groups_order();
            $data['article_prices'] = $this->m_articles->get_article_prices_for_article($id);
            //echo "<script>console.log('".print_r($this->m_articles->get_article_prices_for_article($id))."');</script>";

            /* Load views */
            $this->load->view('includes/v_header', array(
                'title' => 'Bestelmodule',
                'groups' => array()
            ));
            $this->load->view('admin/v_edit_article', $data);
            $this->load->view('includes/v_footer');
        endif;
    }