Codeigniter 库不工作答案

【问题标题】：Codeigniter library not workingCodeigniter 库不工作
【发布时间】：2015-10-31 18:08:52
【问题描述】：

正在开发 codeigniter 自定义库。我在帖子中附上了库函数和控制器函数。

我的代码

控制器：-

public function __construct()
{
    parent::__construct();
    $this->load->library('pagination_library');
}

function index(){
   $this->pagination_library->orders();
}

分页库：

class Pagination_library {

  function __construct() {
    parent::__construct();
    $this->CI =& get_instance();
    $this->CI->load->model('pagination_model');
    $this->CI->load->library('pagination');
  }

  public function orders(){
  }

}

我得到这个错误：

致命错误：无法访问父级：：当当前类范围没有父母

【问题讨论】：

去掉struct方法的第一行，导致这个类没有超类

标签： codeigniter

【解决方案1】：

你没有从任何其他类扩展这个类。所以 parent:: 将不起作用。尝试这个。如果您在创建库时仍然遇到任何问题，请按照本教程进行操作Link

   public function orders()
  {
    $this->CI =& get_instance();
    $this->CI->load->model('pagination_model');
    $this->CI->load->library('pagination');
   }

【讨论】：

【解决方案2】：

这样做：

class Pagination_library { 

function __construct() 
  {
    // parent::__construct();
    $this->CI =& get_instance();
    $this->CI->load->model('pagination_model');
    $this->CI->load->library('pagination');
  }
  public function orders()
  {

  }

}

【讨论】：

【解决方案3】：

public function pager($total,$segment=3,$perpage=PP){

    $this->load->library('pagination');
    if($segment==3){
        $config['base_url'] = base_url($this->uri->segment(1).'/'.$this->uri->segment(2));
    }elseif($segment == 4){
        $config['base_url'] = base_url($this->uri->segment(1).'/'.$this->uri->segment(2).'/'.$this->uri->segment(3));
    }elseif($segment==5){
        $config['base_url'] = base_url($this->uri->segment(1).'/'.$this->uri->segment(2).'/'.$this->uri->segment(3).'/'.$this->uri->segment(4));
    }elseif($segment==2){
        $config['base_url'] = base_url($this->uri->segment(1).'/');
    }
    $config['uri_segment'] = $segment;

    $config['total_rows'] = $total;
    $config['per_page'] = $perpage;

    $config['full_tag_open'] = '<ul class="pagination">';
    $config['full_tag_close'] = '</ul>';

    $config['first_link'] = '&laquo;';
    $config['first_tag_open'] = '<li>';
    $config['first_tag_close'] = '</li>';

    $config['last_link'] = '&raquo;';
    $config['last_tag_open'] = '<li>';
    $config['last_tag_close'] = '</li>';

    $config['next_link'] = '&rarr;';
    $config['next_tag_open'] = '<li>';
    $config['next_tag_close'] = '</li>';

    $config['prev_link'] = '&larr;';
    $config['prev_tag_open'] = '<li>';
    $config['prev_tag_close'] = '</li>';

    $config['cur_tag_open'] = '<li class="active"><a href="#">';
    $config['cur_tag_close'] = '</a></li>';

    $config['num_tag_open'] = '<li>';
    $config['num_tag_close'] = '</li>';

    $this->pagination->initialize($config);
    return $this->pagination->create_links();
}

【讨论】：

【解决方案4】：

在库中制作它们时您不需要

parent::__construct();

改一下

class Pagination_library {

  function __construct() {
    parent::__construct();
    $this->CI =& get_instance();
    $this->CI->load->model('pagination_model');
    $this->CI->load->library('pagination');
  }

  public function orders(){
  }

}

移除父级::__construct();

到这里

class Pagination_library {

  function __construct() {
    $this->CI =& get_instance();
    $this->CI->load->model('pagination_model');
    $this->CI->load->library('pagination');
  }

  public function orders(){
  }

}

【讨论】：