Php 带索引功能的CodeIgniter分页

我有一个产品列表，当我按下子类别时，它会加载该子类别中的所有产品，并使用索引作为：

http://localhost/ClickBasket/listproductscontroller/index?subcategory=4

因为它可以包含很多产品，所以我使用了CI的分页库。当我转到第二页或第三页时，它运行良好：

http://localhost/ClickBasket/listproductscontroller/index/1?subcategory=4
http://localhost/ClickBasket/listproductscontroller/index/2?subcategory=4

但当我返回到第一页时，它将丢失子类别的id：

http://localhost/ClickBasket/listproductscontroller/index

因此，在页面中找不到子类别及其产品的数据。你怎么解决这个问题？我仍在学习CodeIgniter的分页库

试试看

我的代码：

//pagination
 $this->load->library('pagination');
 $config['base_url']   = site_url('/ClickBasket/listproductscontroller/index');
 $config['total_rows'] = $this->db->query('SELECT FOUND_ROWS() count;')->row()->count;
 $config['per_page']   = 9;
 #$config['uri_segment'] = 4;
 $config['full_tag_open']        = "<ul class='pagination'>";
 $config['full_tag_close']       = "</ul>";
 $config['num_tag_open']         = '<li>';
 $config['num_tag_close']        = '</li>';
 $config['cur_tag_open']         = "<li class='disabled'><li class='active'><a href='#'>";
 $config['cur_tag_close']        = "<span class='sr-only'></span></a></li>";
 $config['next_tag_open']        = "<li>";
 $config['next_tagl_close']      = "</li>";
 $config['prev_tag_open']        = "<li>";
 $config['prev_tagl_close']      = "</li>";
 $config['first_tag_open']       = "<li>";
 $config['first_tagl_close']     = "</li>";
 $config['last_tag_open']        = "<li>";
 $config['page_query_string']    = true;
 $config['query_string_segment'] = 'page';
 $config['reuse_query_string']   = true;
 $config['use_page_numbers']     = true;
 $config['last_tagl_close']      = "</li>";
 $this->pagination->initialize($config);

//分页
$this->load->library（'pagination'）；
$config['base_url']=site_url（'/ClickBasket/listproductscontroller/index'）；
$config['total_rows']=$this->db->query（'SELECT FOUND_rows（）count；'）->row（）->count；
$config['per_page']=9；
#$config['uri_segment']=4；
$config['full_tag_open']=“
”；
$config['full_tag_close']=“
”；
$config['num_tag_open']='
'；
$config['num_tag_close']='
；
$config['cur\u tag\u open']=“
”；
$config['next_tag_open']=“
”；
$config['next_tagl_close']=“
”；
$config['prev_tag_open']=“
”；
$config['prev_tagl_close']=“
”；
$config['first_tag_open']=“
”；
$config['first_tagl_close']=“
”；
$config['last_tag_open']=“
”；
$config['page\u query\u string']=true；
$config['query_string_segment']='page'；
$config['reuse\u query\u string']=true；
$config['use_page_number']=true；
$config['last_tagl_close']=“
”；
$this->pagination->initialize（$config）；

您能分享一下您的控制器逻辑吗？你可以在管制员那里处理谢谢你！但我唯一真正缺少的是“重用查询字符串”配置。