我正在编写一个Wordpress插件,并希望使用ajax来提交数据。当使用ajax在管理面板中提交表单时,我收到此错误:
致命错误:在非对象中调用成员函数insert() /home1/crave/public_html/wp-content/plugins/MiniCMS/add_contenttype.php 第13行
这是被调用的脚本。错误行已注释。
<?php
global $wpdb;
$name = $_POST["name"];
$id = '1';
$text_inputs = $_POST["text_inputs"];
$paragraph_inputs = $_POST["paragraph_inputs"];
$map_inputs = $_POST["map_inputs"];
$file_inputs = $_POST["file_inputs"];
$contentTypeTable = $wpdb->prefix . "minicms_content_type";
//This is line 13, the problem child:
$wpdb->insert( $contentTypeTable, array(
'name' => $name,
'id' => $id,
'text_inputs' => $text_inputs,
'paragraph_inputs' => $paragraph_inputs,
'map_inputs' => $map_inputs,
'file_inputs' => $file_inputs
));
?>
有谁知道为什么我没有让$ wpdb工作?
答案 0 :(得分:3)
你需要在WordPress方式中使用ajax。
来自WordPress文档:
首先添加一些会触发AJAX请求的javascript:
<?php
add_action( 'admin_footer', 'my_action_javascript' );
function my_action_javascript() {
?>
<script type="text/javascript" >
jQuery(document).ready(function($) {
var data = {
action: 'my_action',
whatever: 1234
};
// since 2.8 ajaxurl is always defined in the admin header and points to admin-ajax.php
$.post(ajaxurl, data, function(response) {
alert('Got this from the server: ' + response);
});
});
</script>
<?php
}
然后,设置一个将处理该请求的PHP函数:
add_action('wp_ajax_my_action', 'my_action_callback');
function my_action_callback() {
global $wpdb; // this is how you get access to the database
$whatever = intval( $_POST['whatever'] );
$whatever += 10;
echo $whatever;
die(); // this is required to return a proper result
}
参考:
1. http://codex.wordpress.org/AJAX_in_Plugins
2. http://wp.tutsplus.com/articles/getting-started-with-ajax-wordpress-pagination/