Question

我正在构建一个网站，其上有很多分页页面，上面有数百到数千个项目。我想显示当前页面上显示的项目范围，如下所示：

| 300-115中的115-130

我试过这个，但它无法正常工作

echo "Showing ".( $page == 1 ? 1 : ($page -1) * $config["per_page"] +1 )." to ".($page *  $config["per_page"])." item of ".$config["total_rows"];

我的控制器中的当前代码是：

class Home extends CI_Controller {

function __construct()
{
    parent::__construct();
    $this->load->library("pagination");
}

public function index()
{
    $this->load->model('status_model');//load the status model

    //pagination config
    $config = array();
    $config["base_url"] = site_url() . "/home/index";
    $config["total_rows"] = $this->status_model->count_active_entries();//Get the total number of rows
    $config["per_page"] = 1;
    $config["uri_segment"] = 3;
    $config["anchor_class"] = 'class="normal" ';
    $config['full_tag_open'] = '<ul>';
    $config['full_tag_close'] = '</ul>';
    $config['first_tag_open'] = '<li>';
    $config['first_tag_close'] = '</li>';
    $config['next_link'] = 'Next';
    $config['next_tag_open'] = '<li>';
    $config['next_tag_close'] = '</li>';
    $config['last_tag_open'] = '<li>';
    $config['last_tag_close'] = '</li>';
    $config['prev_link'] = 'Prev';
    $config['prev_tag_open'] = '<li>';
    $config['prev_tag_close'] = '</li>';
    $config['cur_tag_open'] = '<li class="num_active">';
    $config['cur_tag_close'] = '</li>';
    $config['num_tag_open'] = '<li>';
    $config['num_tag_close'] = '</li>';


    $this->pagination->initialize($config);

    $page = ($this->uri->segment(3)) ? $this->uri->segment(3) : 0;

    $statuses = $this->status_model->get_entries($config["per_page"], $page); //call the method to get all the active statuses

    if($statuses !== false) { 

        $content_data['results'] = $statuses;
    }
    else { // If no results are returned display the following error message

        $content_data['error'] = 'Error no status updates are being returned from the database. Please contact an administrator.';
    }

    echo "Showing ".( $page == 1 ? 1 : ($page -1) * $config["per_page"] +1 )." to ".($page * $config["per_page"])." item of ".$config["total_rows"];


    $content_data["links"] = $this->pagination->create_links();
    $data['title'] = ' Status';                           //Browser page title
    $data['page_title'] = 'The Latest Status Updates';//The page H1 tag
    $data['content'] = $this->load->view('results', $content_data, TRUE);//the page content

    $this->load->view('home', $data);                  

}

Answer 1

首先尝试删除以下行

echo "Showing ".( $page == 1 ? 1 : ($page -1) * $config["per_page"] +1 )." to ".($page * $config["per_page"])." item of ".$config["total_rows"];

并检查您的页面。如果您的页面呈现没有错误并且分页工作正常，那么您应该通过计算获取的行来计算范围并将计算的范围传递给视图。

 $count = count($statuses);
 $r_from = $page <= 1 ? 1 : ($page -1) * $config["per_page"]+1; //RANGE STARTS FROM 
 $r_to   = $r_from + $count - 1;    //RANGE ENDS TO
 $content_data["range"] = $count? "Showing ".$r_from." to ".$r_to." item of ".$config["total_rows"]:'';

在您打印的视图中打印$ content_data [“links”]; 可能像

echo $range;

完整的控制器代码 -

class Home extends CI_Controller {

function __construct()
{
    parent::__construct();
    $this->load->library("pagination");
}

public function index()
{
    $this->load->model('status_model');//load the status model

    //pagination config
    $config = array();
    $config["base_url"] = site_url() . "/home/index";
    $config["total_rows"] = $this->status_model->count_active_entries();//Get the total number of rows
    $config["per_page"] = 1;
    $config["uri_segment"] = 3;
    $config["anchor_class"] = 'class="normal" ';
    $config['full_tag_open'] = '<ul>';
    $config['full_tag_close'] = '</ul>';
    $config['first_tag_open'] = '<li>';
    $config['first_tag_close'] = '</li>';
    $config['next_link'] = 'Next';
    $config['next_tag_open'] = '<li>';
    $config['next_tag_close'] = '</li>';
    $config['last_tag_open'] = '<li>';
    $config['last_tag_close'] = '</li>';
    $config['prev_link'] = 'Prev';
    $config['prev_tag_open'] = '<li>';
    $config['prev_tag_close'] = '</li>';
    $config['cur_tag_open'] = '<li class="num_active">';
    $config['cur_tag_close'] = '</li>';
    $config['num_tag_open'] = '<li>';
    $config['num_tag_close'] = '</li>';


    $this->pagination->initialize($config);

    $page = ($this->uri->segment(3)) ? $this->uri->segment(3) : 0;

    $statuses = $this->status_model->get_entries($config["per_page"], $page); //call the method to get all the active statuses
    $count = '';
    if($statuses !== false) { 

        $content_data['results'] = $statuses;
        $count = count($statuses);
        $r_from = $page <= 1 ? 1 : ($page -1) * $config["per_page"]+1;
        $r_to   = $r_from + $count - 1;
        // YOU CAN DO IT WITHOUT COUNT. FOR THAT YOU NEED TO CALCULATE $r_to 
        // $r_to = $page * $config["per_page"];
        // AND NEED TO CHECK THIS WITH Total record
        // $r_to = $r_to>$config["total_rows"] ? $config["total_rows"]:$r_to;
    }
    else { // If no results are returned display the following error message

        $content_data['error'] = 'Error no status updates are being returned from the database. Please contact an administrator.';
    }


    $content_data["range"] = $count? "Showing ".$r_from." to ".$r_to." item of ".$config["total_rows"]:'';

    $content_data["links"] = $this->pagination->create_links();
    $data['title'] = ' Status';                           //Browser page title
    $data['page_title'] = 'The Latest Status Updates';//The page H1 tag
    $data['content'] = $this->load->view('results', $content_data, TRUE);//the page content

    $this->load->view('home', $data);                  

}

使用codeigniter分页计算每页上显示的项目范围

1 个答案: