在Wordpress中上传Ajax文件-无法通过FormData [英] Ajax file upload in Wordpress - can't pass FormData

问题描述

我制作了一个脚本，该脚本使用$ .ajax和FormData将两个表单对象传递给PHP.一个表单对象是文本，另一个是文件. 它作为独立脚本运行良好.但是，当我将其作为插件添加到Wordpress后，它一直给我"Uncaught TypeError: Illegal invocation".

I've made a script which uses $.ajax and FormData to pass two form objects to PHP. One form object is a text and the other is a file. It worked well as a stand-alone script. However, after I added it to Wordpress, as a plugin, it keeps giving me "Uncaught TypeError: Illegal invocation".

我不能序列化表单数据，仅仅是因为那样一来，我将无法将文件传递给PHP中的回调函数.

I can't afford to serialize the formdata, simply because then I won't be able to pass the file to the callback function in PHP.

在ajax调用之前涉及FormData的JS:

JS involving FormData before ajax call:

var fd = new FormData();
var file = jQuery(this).find('input[type="file"]');
var caption = jQuery(this).find('input[name=img_caption]');
var individual_file = file[0].files[0];
fd.append("file", individual_file);
var individual_capt = caption.val();
fd.append("caption", individual_capt);

上面的这一部分是100％正确的.

This part above is 100% correct.

Ajax调用:

jQuery.ajax({
    type: 'POST',
    url: fiuajax.ajaxurl,
    data: {
        action: 'fiu_upload_file',
        security: fiuajax.security,
        data: fd,
        contentType: false,
        processData: false,
    },
    success: function(response){
        var dataObj = jQuery.parseJSON(response);
        if(dataObj.message == 'error') {
            jQuery('.fiu_validation').html('The following error occured: '+dataObj.desc);
        }
        else if(dataObj.message == 'success') {
            jQuery('.fiu_file').val('');
        }
        console.log(response);
    }
});

这令人难以置信，因为它在Wordpress之外效果很好.我曾尝试注销Wordpress的jQuery并加入最新的jQuery版本，但这没什么区别.

This is incredibly frustrating since it worked perfectly fine outside of Wordpress. I've tried de-registering Wordpress' jQuery and enqueueing the latest jQuery version, but it made no difference.

回顾:
1)Ajax/jQuery拒绝将表单对象传递给PHP
2)无法序列化对象，因为我需要保留文件对象
3)脚本在Wordpress之外运行
4)尝试更新到最新的jQuery版本，无变化

To recap:
1) Ajax/jQuery is refusing to pass a form object to PHP
2) Can't serialize the object because I need to preserve the file object
3) Script works outside of Wordpress
4) Tried updating to the newest jQuery version, no change

推荐答案

尝试一下:

jQuery(document).on('click', '#submit', function(e){
    e.preventDefault();

    var fd = new FormData();
    var file = jQuery(document).find('input[type="file"]');
    var caption = jQuery(this).find('input[name=img_caption]');
    var individual_file = file[0].files[0];
    fd.append("file", individual_file);
    var individual_capt = caption.val();
    fd.append("caption", individual_capt);  
    fd.append('action', 'fiu_upload_file');  

    jQuery.ajax({
        type: 'POST',
        url: fiuajax.ajaxurl,
        data: fd,
        contentType: false,
        processData: false,
        success: function(response){

            console.log(response);
        }
    });
});

php

function fiu_upload_file(){

    var_dump($_FILES);
    exit();
}

add_action('wp_ajax_fiu_upload_file', 'fiu_upload_file');
add_action('wp_ajax_nopriv_fiu_upload_file', 'fiu_upload_file');

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