Question

我知道这个问题已经被问了很多，所以我为任何冗余道歉。但是，似乎无法使其返回0以外的值。以下是我在Twenty-Twelve主题中包含在functions.php底部的代码：

add_filter( 'views_edit-destination', 'so_13813805_add_button_to_views' );
function so_13813805_add_button_to_views( $views )
{
    $views['my-button'] = '<button id="update-dest-cache" type="button" class="button"             title="Update Destinations Cache" style="margin:5px" onclick="updateDestCache()">Update Destinations Cache</button>';
    $views['my-button'] .= '
        <script type="text/javascript" >
        function updateDestCache() {
            jQuery.ajax({
                type: "POST",
                url: ajaxurl,
                dataType: "json",
                action: "testAjaxFunction",
                success: function(response){ 
                    alert("Got this from the server: " + response);
                },
                error: function(MLHttpRequest, textStatus, errorThrown){  
                    alert("There was an error: " + errorThrown);  
                },
                timeout: 60000
            });    
        };
        </script>
    ';
    return $views;
}
function testAjax(){
    echo "ANYTHING!!!!";
    die();
}
add_action('wp_ajax_testAjaxFunction', 'testAjax');
add_action('wp_ajax_nopriv_testAjaxFunction', 'testAjax' );

此代码在自定义帖子类型的“编辑”列表中添加一个按钮，然后在单击时运行该功能。按钮显示，函数运行，调用ajax函数，但0始终是响应。

关于为什么会这种情况继续发生的任何想法？

Answer 1

我的javascript写得不正确。

function updateDestCache() {
   jQuery.ajax({
      type: "POST",
      url: ajaxurl, 
      data: { action: "testAjaxFunction" }, <---- THIS LINE WAS CHANGED
      success: function(response){ 
         alert("Got this from the server: " + response);
      },
      error: function(MLHttpRequest, textStatus, errorThrown){  
         alert("There was an error: " + errorThrown);  
      },
      timeout: 60000
   });    
};

Answer 2

ajaxurl仅在信息中心内定义。如果你在前端使用它，你应该声明它：

$admin_url = admin_url('admin-ajax.php');
$views['my-button'] .= '
        <script type="text/javascript" >
        function updateDestCache() {
            jQuery.ajax({
                type: "POST",
                url: '. $admin_url .', 
                dataType: "json",
                action: "testAjaxFunction",
                success: function(response){ 
                    alert("Got this from the server: " + response);
                },
                error: function(MLHttpRequest, textStatus, errorThrown){  
                    alert("There was an error: " + errorThrown);  
                },
                timeout: 60000
            });    
        };
        </script>
    ';

带有WordPress Functions.php的Ajax总是返回0

2 个答案: