使用codeigniter Json Mysql Ajax Jquery进行实时搜索

时间:2013-05-31 07:37:03

标签: php jquery mysql ajax codeigniter

我正在使用Jquery Ajax,Php Codeigniter和Mysql进行实时搜索项目 此搜索类似于 http://w3schools.com/ajax/ajax_aspphp.asp但是使用MYSql

这是我的数据库表:

CREATE TABLE IF NOT EXISTS `ix08s_subjects` (
  `SUB_ID` int(11) NOT NULL AUTO_INCREMENT,
  `NAME` varchar(211) DEFAULT NULL,
  `added_by` int(11) DEFAULT NULL,
  `date_added` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`SUB_ID`),
  KEY `FK_ix08s_subjects` (`added_by`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 COMMENT='to store the subjects' AUTO_INCREMENT=3 ;

-

- 转储表ix08s_subjects

的数据
INSERT INTO `ix08s_subjects` (`SUB_ID`, `NAME`, `added_by`, `date_added`) VALUES
(1, 'physics', 2, '2013-05-31 10:07:55'),
(2, 'physics', 2, '2013-05-31 10:41:09');

这是我的型号代码 - Subjectmodel.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Subjectmodel extends CI_Model {
   public function __construct() {
        parent::__construct();
    }
    function getSubject($search){
        $this->db->select("SUB_ID,NAME");
        $whereCondition = array('NAME' =>$search);
        $this->db->where($whereCondition);
        $this->db->from('ix08s_subjects');
        $query = $this->db->get();
        return $query->result();
    }
}
?>

这是我的控制器代码 - Subject.php

<?php
class Subject extends CI_Controller {
    function __construct() {
        parent::__construct();
        $this->load->model('SubjectModel');
    }
    public function index(){
        $search=  $this->input->post('search');
        $query = $this->SubjectModel->getSubject($search);
        echo json_encode ($query);
        $this->load->view('search', $query);
    }
}
?>

这是我的查看代码 - 的search.php

<html>
<head>

<script type="text/javascript" language="javascript" src="http://somexyz/js/javascripts/plugin/jquery.js"></script>
<script type="text/javascript" src="http://somexyz/js/javascripts/plugin/json2.js"></script>
<script>
    $(document).ready(function(){
      $("#search").keyup(function(){
        if($("#search").val().length>3){
        $.ajax({
            type: "post",
            url: "http://localhost/ibps/index.php/subject",
            cache: false,               
            data:'search='+$("#search").val(),
            dataType: 'json',
            success: function(response){
                $('#finalResult').html("");
                var obj = JSON.parse(response);
                if(obj.length>0){
                    try{
                        var items=[];   
                        $.each(obj, function(i,val){                                            
                            items.push($('<li/>').text(val.NAME));
                        }); 
                        $('#finalResult').append.apply($('#finalResult'), items);
                    }catch(e) {     
                        alert('Exception while request..');
                    }       
                }else{
                    $('#finalResult').html($('<li/>').text("No Data Found"));       
                }       

            },
            error: function(){                      
                alert('Error while request..');
            }
        });
        }
        return false;
      });
    });
</script>
</head>
<body>
<div id="container">

<input type="text" name="search" id="search" />
<ul id="finalResult"></ul>
</div>
</body>
</html>

如果我在搜索框中键入四个字母,我会弹出此警告

请求时出错..

未从数据库中获取值

1 个答案:

答案 0 :(得分:1)

问题在于返回格式为http://localhost/ibps/index.php/subject

您已添加以下行:

$this->load->view('search', $query);

与您之前的问题“Live search using Codeigniter Mysql”相比较。这可能是在输出中添加了一个html模板,而不是ajax调用所期望的json

查看Return JSON with CodeIgniter