AJAX 分页 jQuery-2.1.4.min.js: 500 (内部服务器错误）

我正在Codeigniter HMVC中使用这个ajax分页。 我得到了我想要的输出。但仅在第一个链接上。然后，下一页不会打开。或者当我单击它们时，没有任何反应。我检查了元素，它有错误。

Failed to load resource: the server responded with a status of http://http://localhost/TLC_HR/Job_Titles/ajaxPaginationData/10 500 (Internal Server Error)
jQuery-2.1.4.min.js:4 POST http://localhost/TLC_HR/Job_Titles/ajaxPaginationData/10 500 (Internal Server Error)k.cors.a.crossDomain.send @ jQuery-2.1.4.min.js:4n.extend.ajax @ jQuery-2.1.4.min.js:4n.(anonymous function) @ jQuery-2.1.4.min.js:4onclick @ Job_Titles:524

这是我的代码。

Job_Titles.php - 控制器

<?php
class Job_Titles extends MY_Controller{
    public function __construct(){
        parent::__construct();
        $this->load->model('Job_Titles_Model');
        $this->load->library('Ajax_pagination');
        $this->perPage = 10;
    }
// VIEW REDIRECTING /////////////////////////////////////////////////////////
    public function index(){
    /// view ajax config/////
    $data = array();
    //total row count
    $totalRec = count($this->Job_Titles_Model->getRows());
    //configuration
    $config['first_link'] = 'First';
    $config['div'] = 'postList'; //parent div tag id
    $config['base_url'] = base_url().'Job_Titles/ajaxPaginationData';
    $config['total_rows'] = $totalRec;
    $config['per_page'] = $this->perPage; 
    $this->ajax_pagination->initialize($config);
    //get data // must pass this to $this->load->view('content_view') and make it $this->load->view('content_view',$data,false)
    $data['job_titles'] = $this->Job_Titles_Model->getRows(array('limit'=>$this->perPage,$this->uri->segment(3)));
    $data['content_view'] = 'Job_Titles/jobtitles_read';
    $this->templates->admin_template($data);
    }
    public function add_view(){
    $data['content_view'] = 'Job_Titles/add_view';
    $this->templates->admin_template($data);
    }
//// pagination
    public function ajaxPaginationData(){
    $page = $this->input->post('page');
        if(!$page){
            $offset = 0;
        }else{
            $offset = $page;
        }
        //total row count
        $totalRec = count($this->Job_Titles_Model->getRows());
        //pagination config
        $config['first_link'] = 'First';
        $config['div'] = 'postList'; //parent div tag id
        $config['base_url'] = base_url().'Job_Titles/ajaxPaginationData';
        $config['total_rows'] = $totalRec;
        $config['per_page'] = $this->perPage; 
        $this->ajax_pagination->initialize($config);
        //get post data
        $data['job_titles'] = $this->Job_Titles_Model->getRows(array('start'=>$offset,'limit'=>$this->perPage));
        //load the view
        $data['content_view'] = "'Job_Titles/jobtitles_read', $data, false";
        $this->templates->admin_template($data);
    }
}
?>

Job_Titles_Model.php -- 型号

<?php
class Job_Titles_Model extends CI_Model{
    function __construct() {
        $this->table = 'job_titles';
    }
/////  VIEW PAGINATION /////////////////////////////////////////////////////////

        public function getRows($params = array()){
        $this->db->select('*');
        $this->db->from($this->table);
        if(array_key_exists("start", $params) && array_key_exists("limit", $params)){
            $this->db->limit($params['limit'],$params['start']);
        }elseif (!array_key_exists("start", $params) && array_key_exists("limit", $params)) {
            $this->db->limit($params['limit']);
        }
        $query = $this->db->get();
        return ($query->num_rows() > 0)?$query->result_array():FALSE;
    }

}

?>

admin_template.php ---模板

          <li>
            <a href="<?php echo base_url(); ?>Job_Titles"><i class="fa fa-circle-o"></i>Job Titles</a>
          </li>
          <div class="box-body">    
              <?php $this->load->view($content_view); ?>
          </div>

以及显示分页add_view.php ---。

<link rel="stylesheet" href="<?php echo base_url(); ?>assets/bootstrap/css/inputfield.css">
<div>
    <center>
        <fieldset>

                <?php
                    echo form_open('Job_Titles/create');
                ?>
                <p>
                    <label class="field" for="JOB_CODE"><span>*</span>Job Code:</label>
                    <input type = "text" name="JOB_CODE" class ="textbox-300">
                    <label class = "error"><?php echo form_error("JOB_CODE"); ?></label>
                </p>
                <p>
                    <label class="field" for="JOB_NAME"><span>*</span>Job Name:</label>
                    <input type = "text" name="JOB_NAME" class ="textbox-300">
                    <?php echo form_error("JOB_NAME"); ?>
                </p>

                <?php
                    echo form_submit('submit','Save');
                    echo form_close();
                ?>

        </fieldset>
    </center>
</div>