How to implement PHP CodeIgniter paging and multi-condition query

This article mainly introduces PHP CodeIgniter paging examples and detailed explanations of multi-condition query ideas. It is very good and has reference value. Friends in need can refer to it

When using the CI framework recently, use I have installed the paging class of CI. I used to use the front-end paging class. This time I simply used the one that comes with the framework. I might as well record it in my forgetful mind.

Because there is a conditional filtering form on the page, the desired effect is that after entering the conditions, the entered conditions can be maintained after the page jump. After thinking about it for a while, I came up with the following code.

controller code

class Monitors extends CI_Controller {
public function warning(){
    $config= array();
    $config['per_page'] = 15; //每页显示的数据数
    $current_page = intval($this->input->get("per_page")); //获取当前分页页码数
   
 $status=$this->input->get("filter-status",TRUE);
 $level=$this->input->get('filter-level',TRUE);
 $timestamp=$this->input->get('filter-timestamp',TRUE);
    $all = $this->monitors_m->getAllData($current_page,$config['per_page'],$status,$timestamp,$level);
   //这里返回的有总条数和具体的数据，根据自己的情况略加修改即可
 $data['allevent'] = $all['content'];
 $config['total_rows']   = $all['count'];//总条数
    $config['num_links'] = 3;//页码连接数
 $config['use_page_numbers'] = TRUE; 
 $config['page_query_strings'] = TRUE;//关键配置
 $config['base_url'] = base_url().'index.php/monitors/warning?'&filter-status='.$status.'&filter-level='.$level.'&filter-timestamp='.$timestamp;//关键配置
 $this->load->library('pagination');//加载ci pagination类
 $this->pagination->initialize($config);
 $data['page'] = $this->pagination->create_links();//关键代码
 $this->load->view("monitors_v",$data);
}

Key configuration parameters

$config[‘page_query_string']

If If set to true, the url will be "index.php/monitors/warning?per_page=20" like this

[Note] "per_page" is the query string passed by default, but you can also use $config[ 'query_string_segment'] = 'your string' to configure

In my solution, it is set to TRUE. Of course, TRUE is the default value, and you can leave it alone;

$config[‘base_url']

When it is initially set to the following situation, it is possible to perform conditional filtering on a certain page, but after the jump, the conditions are no longer due to refresh problems.

$config['base_url'] = base_url().'index.php/monitors/warning;

Use the following method, roar hoho

$status=$this->input->get("filter-status",TRUE);
$level=$this->input->get('filter-level',TRUE);
$timestamp=$this->input->get('filter-timestamp',TRUE);
$config['base_url'] = base_url().'index.php/monitors/warning?'&filter-status='.$status.'&filter-level='.$level.'&filter-timestamp='.$timestamp;//关键配置

view page The code

is just one sentence. Just add this sentence where you need to place the paging element. The $page variable here is stored in the controller. $this->pagination->create_links ();

<?php echo $page?>

Set paging style

The bootstrap style is used here

$config[&#39;first_link&#39;]   = "<<";//首页
$config[&#39;prev_link&#39;]   = "<";//上一页
$config[&#39;next_link&#39;]   = ">";//下一页
$config[&#39;last_link&#39;]   = ">>";//尾页
$config[&#39;full_tag_open&#39;] = &#39;<ul class="pagination pagination-split">&#39;; 
$config[&#39;full_tag_close&#39;] = &#39;</ul>&#39;; 
$config[&#39;first_tag_open&#39;] = &#39;<li>&#39;;//第一个链接的起始标签。
$config[&#39;first_tag_close&#39;] = &#39;</li>&#39;;//第一个链接的结束标签。
$config[&#39;next_tag_open&#39;] = &#39;<li>&#39;;//下一页链接的起始标签。
$config[&#39;next_tag_close&#39;] = &#39;</li>&#39;;//下一页链接的结束标签。
$config[&#39;prev_tag_open&#39;] = &#39;<li>&#39;;//上一页链接的起始标签。
$config[&#39;prev_tag_close&#39;] = &#39;</li>&#39;;//上一页链接的结束标签。
$config[&#39;cur_tag_open&#39;] = &#39;<li class="active"><a>&#39;;
$config[&#39;cur_tag_close&#39;] = &#39;</a></li>&#39;;//当前页链接的结束标签。
$config[&#39;num_tag_open&#39;] = &#39;<li>&#39;;//数字链接的起始标签。
$config[&#39;num_tag_close&#39;] = &#39;</li>&#39;;//数字链接的结束标签。

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