我有一个插件，可以作为标准帖子使用，但不能作为AJAX帖子请求使用。
我在Firebug中得到了一个使用此函数的非函数错误：
类型错误：jQuery（…）。ajaxSubmit不是一个函数
jQuery(this).ajaxSubmit(options);
这一魔法起到了拯救作用：
http://codeimpossible.com/2010/01/13/solving-document-ready-is-not-a-function-and-other-problems/( function($) {
} ) ( jQuery );
这是与我的插件一起排队的js文件-它确实加载在标题中：
jQuery(document).ready(function(){
var options = {
target: \'#output\', // target element(s) to be updated with server response
beforeSubmit: beforeSubmit, // pre-submit callback
success: afterSuccess, // post-submit callback
uploadProgress: OnProgress, //upload progress callback
resetForm: true // reset the form after successful submit
}
jQuery(\'#nanny_app_upload\').on(\'submit\', function(e) {
e.preventDefault();
alert(\'jQuery submit called\');
jQuery(this).ajaxSubmit(options);
alert(\'jQuery post submit\');
// always return false to prevent standard browser submit and page navigation
alert(\'Got this from the server: \' + response);
return false;
});
//function after succesful file upload (when server response)
function afterSuccess(){
alert(\'jQuery afterSuccess\');
jQuery(\'#submit-btn\').show(); //show submit button
jQuery(\'#loading-img\').hide(); //hide loading button
jQuery(\'#progressbox\').delay( 1000 ).fadeOut(); //hide progress bar
}
//function to check file size before uploading.
function beforeSubmit(){
alert(\'jQuery beforeSubmit\');
jQuery(\'#submit-btn\').hide(); //hide submit button
jQuery(\'#loading-img\').show(); //show loading button
jQuery("#output").html("");
}
//progress bar function
function OnProgress(event, position, total, percentComplete)
{
//Progress bar
alert(\'jQuery OnProgress\');
jQuery(\'#progressbox\').show();
jQuery(\'#statustxt\').show();
jQuery(\'#progressbar\').width(percentComplete + \'%\') //update progressbar percent complete
jQuery(\'#statustxt\').html(percentComplete + \'%\'); //update status text
if(percentComplete>50)
{
jQuery(\'#statustxt\').css(\'color\',\'#000\'); //change status text to white after 50%
}
}
});
以下是从子主题生成的表单：
//Nannie upload form
add_action("action_nannie_upload_form", "do_action_nannie_upload_form");
function do_action_nannie_upload_form()
{
$url = plugins_url();
$plugins_url = $url . "/nannie-app/";
?><br>
An Upload FORM!<br>
<form action="<?php echo admin_url(\'admin-ajax.php\'); ?>"
method="post" enctype="multipart/form-data" id="nannie_app_upload">
<br>
<?php wp_nonce_field(\'nannie_app_upload\',\'nannie_upload_ajax_nonce\'); ?>
<!-- Add new File -->
<span class="btn btn-file">Select file:
<input name="FileInput" id="FileInput" type="file" /></span>
<button type="submit" class="btn" id="submit-btn">Upload</button>
</form>
<img src="<?php echo $plugins_url; ?>images/ajax-loader.gif" id="loading-img"
style="display:none;" alt="Please Wait"/>
<div id="progressbox" style="display:none;"><div id="progressbar"></div >
<div id="statustxt">0%</div></div>
<div id="output"></div>
<br>
<br>
<hr/>
<script src="<?php echo get_stylesheet_directory_uri(); ?>/plugins/form/jquery.form.js"></script>
<script src="<?php echo get_stylesheet_directory_uri(); ?>/plugins/uload/ajaxFileUpload.js"></script>
<?php
}
下面是表单submit调用的操作。如果我删除对AJAX标题的检查，它会上载文件并将我重定向到空白页面。
add_action("wp_ajax_nopriv_nannie_app_upload", "nannie_app_upload");
function nannie_app_upload(){
global $wpdb;
if(isset($_FILES["FileInput"])){
log_me("nannie_app_upload: FileInput found");
if (!isset( $_POST[\'nannie_upload_ajax_nonce\']) ||
!wp_verify_nonce($_POST[\'nannie_upload_ajax_nonce\'], \'nannie_app_upload\')){
print \'Sorry, your nonce did not verify.\';
log_me("nannie_app_upload: nonce did not verify");
exit;
}
if (!isset($_SERVER[\'HTTP_X_REQUESTED_WITH\'])){
if(isset($_SESSION["naap_app_uid"])){
$app_uid = $_SESSION["naap_app_uid"];
}
log_me(\'nannie_app_upload: AJAX Not Called #\' . $app_uid);
die();
}
//Is file size is less than allowed size.
if ($_FILES["FileInput"]["size"] > 5242880) {
log_me(\'nannie_app_upload: File size is too big! #\' . $app_uid);
die("File size is too big!");
}
$_SESSION["naap_app_uid"] = $app_uid;
$UploadDirectory = WP_PLUGIN_DIR."/nannie-app/tmp/" . $app_uid . "/";
////////////////////////////////////////////////////
//http://www.saaraan.com/2012/06/ajax-file-upload-with-php-and-jquery
if (!@file_exists($UploadDirectory)) {
//destination folder does not exist
if(!is_dir($UploadDirectory)) {
mkdir($UploadDirectory);
if (!@file_exists($UploadDirectory)) {
log_me(\'nannie_app_upload: Upload directory missing for AJAX upload #\' . $app_uid);
die("Make sure Upload directory exist!");
}
}
}
//allowed file type Server side check
switch(strtolower($_FILES[\'FileInput\'][\'type\']))
{
//allowed file types
case \'image/png\': //png file
case \'image/gif\': //gif file
case \'image/jpeg\': //jpeg file
case \'application/pdf\': //PDF file
case \'application/msword\': //ms word file
case \'application/vnd.ms-excel\': //ms excel file
case \'application/x-zip-compressed\': //zip file
case \'text/plain\': //txt file
case \'text/html\': //html file
//File Title will be used as new File name
$FileName = strtolower($_FILES[\'FileInput\'][\'name\']); //uploaded file name
$ImageExt = substr($FileName, strrpos($FileName, \'.\')); //file extension
$NewFileName = substr($FileName, 0, strrpos($FileName, \'.\') ); //file name before random
$FileType = $_FILES[\'FileInput\'][\'type\']; //file type
$FileSize = $_FILES[\'FileInput\']["size"]; //file size
$RandNumber = rand(0, 9999999999); //Random number to make each filename unique.
$uploaded_date = date("Y-m-d H:i:s");
$NewFileName = preg_replace(array(\'/\\s/\', \'/\\.[\\.]+/\', \'/[^\\w_\\.\\-]/\'), array(\'_\', \'.\', \'\'), strtolower($NewFileName));
$NewFileName = $NewFileName.\'_\'.$RandNumber.$ImageExt;
//Rename and save uploded file to destination folder.
if(move_uploaded_file($_FILES[\'FileInput\']["tmp_name"], $UploadDirectory . $NewFileName )){
//future SQL Insert to record the files uploaded - new table napp_applications_files
log_me(\'nannie_app_upload: Success Upload #\' . $app_uid);
die(\'Success! File Uploaded.\');
break;
}else{
log_me(\'nannie_app_upload: Failed Upload #\' . $app_uid);
die(\'error uploading File!\');
break;
}
break;
default:
log_me(\'nannie_app_upload: Unsupported Upload #\' . $app_uid);
die(\'Unsupported File!\'); //output error enforcing file types
break;
}
}else{
log_me(\'nannie_app_upload: Something wrong with upload! Is "upload_max_filesize" set correctly? #\' . $app_uid);
die(\'Something wrong with upload! Is "upload_max_filesize" set correctly?\');
}
}
