莫里斯JS和笨从控制器传递数据

我有以下的控制器，其从我的质数据库选取的数据：莫里斯JS和笨从控制器传递数据

功能chart_js（）{

$rows = ''; 
    $query = "SELECT clnt_id,date_added FROM job_card ORDER BY date_added DESC LIMIT 0, 5"; 
    $result = $this->db->query($query); 
    $total_rows = $result->num_rows; 
    if ($result) { 
     $rows = $result->result_array(); 
    } 
    print json_encode($rows, JSON_NUMERIC_CHECK); 

}

并将其传递以下列格式来json_encode：

[{"clnt_id": 10, "date_added": "2015-11-02 12:28:01"}, {"clnt_id": 11, "date_added": "2015-11-01 07:06:56"} , {"clnt_id": 9, "date_added": "2015-10-30 22:14:48"}, {"clnt_id": 7, "date_added": "2015-10-30 06:15:55"}, {"clnt_id": 10, "date_added": "2015-10-30 06:03:50"}]

上面的数据是确切的返回数据格式。我已经使用上面的数据来绘制一个静态线图，它工作得很好。下面是我的看法：

<body class="nav-md"> 
     <div class="panel panel-default"> 
      <div class="panel-heading"> 
       <i class="fa fa-bar-chart-o fa-fw"></i> Account Registrations Past 7 days 
      </div> 
      <!-- /.panel-heading --> 
      <div class="panel-body"> 
       <div id="acctregs" style="height: 300px;"></div> 
      </div> 
      <!-- /.panel-body --> 
     </div> 



     <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.css"> 
     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> 
     <script src="//cdnjs.cloudflare.com/ajax/libs/raphael/2.1.0/raphael-min.js"></script> 
     <script src="//cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.min.js"></script> 


     <script> 
      $(document).ready(function() { 
       var acct_regs = [{"clnt_id": 10, "date_added": "2015-11-02 12:28:01"}, {"clnt_id": 11, "date_added": "2015-11-01 07:06:56"} 
        , {"clnt_id": 9, "date_added": "2015-10-30 22:14:48"}, {"clnt_id": 7, "date_added": "2015-10-30 06:15:55"}, {"clnt_id" 
           : 10, "date_added": "2015-10-30 06:03:50"}]; 
       var acctregs = new Morris.Line({ 
        // ID of the element in which to draw the chart. 
        element: 'acctregs', 
        // Chart data records -- each entry in this array corresponds to a point on 
        // the chart. 
        data: acct_regs, 
        // The name of the data record attribute that contains x-values. 
        xkey: 'date_added', 
        // A list of names of data record attributes that contain y-values. 
        ykeys: ['clnt_id'], 
        // Labels for the ykeys -- will be displayed when you hover over the 
        // chart. 
        labels: ['Value'], 
        dateFormat: function (x) { 
         return new Date(x).toString().split("00:00:00")[0]; 
        } 
       }); 
      }); 

     </script> 

</body>

然而，当我尝试检索从通过更换VAR acct_regs与DBASE交互控制器这样的数据：

var acct_regs = "<?php echo site_url('operations/char_js'); ?>";

我收到以下错误：

TypeError: a is undefined 
    ...,h,i,j,k,l;return"number"==typeof a?a:(c=a.match(/^(\d+) Q(\d)$/),e=a.match(/^(\...

from morris.min.js。将这些数据从控制器传递到视图以便显示动态图形的最佳方法是什么？

来源

2015-11-03 H Dindi

尝试添加'标题（ '内容类型：应用程序/ JSON'）;'的'chart_js（）' – madalinivascu

可能[JavaScript关闭如何工作？]（http://stackoverflow.com/questions/111102/how-do-javascript-closures-work） –

您需要阿贾克斯数据使用$.getJSON

尝试：

$.getJSON("<?php echo site_url('operations/char_js'); ?>", function (json) { 
      var acctregs = new Morris.Line({ 
         // ID of the element in which to draw the chart. 
         element: 'acctregs', 
         // Chart data records -- each entry in this array corresponds to a point on 
         // the chart. 
         data: json, 
         // The name of the data record attribute that contains x-values. 
         xkey: 'date_added', 
         // A list of names of data record attributes that contain y-values. 
         ykeys: ['clnt_id'], 
         // Labels for the ykeys -- will be displayed when you hover over the 
         // chart. 
         labels: ['Value'], 
         dateFormat: function (x) { 
          return new Date(x).toString().split("00:00:00")[0]; 
         } 
        }); 
     });

来源

2015-11-03 09:48:40 madalinivascu

莫里斯JS和笨从控制器传递数据

回答

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