通过迭代json对象返回（echo）来将数据附加到网页

I am using cakephp to develop a webpage that dynamically append data retrieved from server. The appended data can be turned in jquery accordions (not shown).

我正在使用cakephp开发一个动态附加从服务器检索的数据的网页。附加的数据可以用jquery手风琴转动(未示出)。

I've tried some suggestions as seen in other topics, but still nothing shows up on the webpage.

我已尝试过其他主题中的一些建议,但网页上仍然没有显示任何内容。

The javascript is as such:

javascript是这样的:

<script type="text/javascript">
$.getJSON('viewmjcatjson.ctp', function(data){
var content = '<div id="majorcat">\n';
      $.each(data, function(index,cat){

            content += '<h2><a href="#">' + cat.category + '</a></h2><div>\n';  
        content += cat.description + '</div>\n'; 

        });
$("#majorcat").append(content);
});
</script>

The 'viewmjcatjson.ctp' is as such:

'viewmjcatjson.ctp'是这样的:

<?php
Configure::write('debug', 0);
echo json_encode($majorCategories);
?>

The json object returned is valid (checked with jsonlint)

返回的json对象有效(使用jsonlint检查)

[{
    "MajorCategories":{
        "category":"Corporate Governance",
        "description":"description on Corporate Governance"
    }
},
{
    "MajorCategories":{
        "category":"Earnings Report",
        "description":"description on Earnings Report"
    }
},
{
    "MajorCategories":{
        "category":"Equity",
        "description":"Relating to stock"
    }
},
{
    "MajorCategories":{
        "category":"Financial Issue",
        "description":"The area of finance dealing with monetary decisions that business enterprises make and the tools and analysis used to make these decisions"
    }
}
]

I am suspecting something is wrong in the each loop, but I am not sure.

我怀疑每个循环中有什么问题,但我不确定。

EDIT The entire php file containing the javascript.

编辑包含javascript的整个php文件。

<?php echo $html->script('jquery-1.5.1.min.js'); ?>
<?php echo $html->script('jquery-ui-1.8.13.custom.min.js'); ?>
<?php echo $html->css('ui-lightness/jquery-ui-1.8.13.custom.css'); ?>

<script type="text/javascript" src="development-bundle/jquery-1.3.2.js"></script>
<script type="text/javascript" src="development-bundle/ui/ui.core.js"></script>
<script type="text/javascript" src="development-bundle/ui/ui.accordion.js"></script>

<div class="users form">
<h1><?php echo $article['Article']['title']?></h1>
<p><small>Author: <?php echo $article['Article']['author_all']?></small></p>
<p><?php echo $article['Article']['full_text']?></p>
<br>
<hr>
<br>
<table>
  <tr>
    <td width="60%">
<div id="majorcat">
</div>
</td>
<td width="40%">
<div id="minorcat">
</div>
</td>
</tr>
</table>
</div>

<div class="actions">
<h3><?php __('Menu'); ?></h3>
<ul>
    <li><?php echo $this->Html->link(__('Logout', true),
        array('controller' => 'users', 'action' => 'logout'));?></li>
</ul>
</div>

<script type="text/javascript">
$(function(){
$.getJSON('viewmjcatjson.ctp', function(data){
        var content = '<div id="majorcat">\n';
            $.each(data, function(index,cat){
                content += '<h2><a href="#">' + cat.category + '</a></h2><div>\n';  
            content += cat.description + '</div>\n'; 
            });
 $("#majorcat").append(content);
});
})
</script>

2 个解决方案

#1

<script type="text/javascript">
$(function(){ 
    $.getJSON('viewmjcatjson.ctp', function(data){
          var content = '<div>'; 
          $.each(data, function(index,cat){
             content += '<h2><a href="#">' + cat.MajorCategories.category + '</a></h2>      <div>';  
              content += cat.MajorCategories.description + '</div>'; 
          });
    $("#majorcat").append(content);
    });
})
</script>

You're missing the document.ready

你错过了document.ready

#2

I noticed Firebug console showing that 'viewmjcatjson' is responding not with json-encoded data but with a HTML file. The contents is actually exactly the same as the PHP file.

我注意到Firebug控制台显示“viewmjcatjson”不响应json编码的数据,而是使用HTML文件。内容实际上与PHP文件完全相同。

So I deduced it could be a routing problem. Changing to...

所以我推断它可能是一个路由问题。改为......

$.getJSON('../viewmjcatjson', function(data){

...solves the problem.

......解决了这个问题。

Thanks Interstellar_Coder for the fixed code though.

感谢Interstellar_Coder的固定代码。