如何在codeigniter中创建具有类别名称的动态URL

Question

嗨，请帮我解决codeigniter中的URL问题。

我想要网址：www.mysite.com/category/pageurl

    example1 :  www.mysite.com/blog/pageurl
    example2 :  www.mysite.com/services/pageurl
    example2 :  www.mysite.com/about/pageurl

mycontroller文件

function postdata()
{  
    $post['url']= array
    (
        $category = $this->uri->segment(3),
        $posturl = $this->uri->segment(4),
    );
    $this->Post_model->get_slug($category,$posturl);
    $this->load->view('postdata',$post);    
}

我的模型文件

function get_slug($category,$posturl)
{
    return $this
        ->db
        ->get_where(
            'post', 
            array(
                'post_type'=>$category,
                'post_url' => $posturl
            )
        )->result();
}

我的路线文件代码

$route['(:any)/(:any)'] = 'Post/postdata/$1/$2';

和我的观点

<?php
foreach($url as $post):
?>
    <h1><?php echo $post->post_title;?> </h1>
    <hr>
    <p>
    <?php  echo $post->post_content;?>
    </p>
<?php 
endforeach;
?>