有没有一种方法可以在没有插件的情况下在结账完成前上传图像 - Is there a way to upload an image before checkout completion without a plugin?

Is there a way to upload an image before checkout completion without a plugin?

我制作了这个插件，用于在订单完成前上传图像，但就我而言，我无法上传图像$_FILES总是不会返回任何内容，但我不知道为什么。我希望在上传图像之前不会完成结账，这可能吗？*有人告诉我，wooccommerce使用ajax作为购物车

<?php
    /*
        @package            UploadTest
        @wordpress_plugin
        Plugin Name:            UploadTest
        Plugin URI:             null
        Description:            
        Author:                 Goodship
        Version:                0.0.2
        Author URI:             www.Goodship.co.za
    */
    function add_image(){
        $testLog = fopen(plugin_dir_path( __FILE__ )."testicle.txt","w") or exit ("Unable to open file!");
        //if they DID upload a file...
        if($_FILES['testUpload']['name']){
            //if no errors...
            if(!$_FILES['testUpload']['error']){
                //now is the time to modify the future file name and validate the file
                $new_file_name = strtolower($_FILES['testUpload']['tmp_name']); //rename file
                if($_FILES['testUpload']['size'] > (1024000)) //can't be larger than 1 MB
                {
                    $valid_file = false;
                    $message = 'Oops!  Your file''s size is to large.';
                }
                //if the file has passed the test
                if($valid_file){
                    //move it to where we want it to be
                    move_uploaded_file($_FILES['testUpload']['tmp_name'], plugin_dir_path( __FILE__ ).'uploads/'.$new_file_name);
                    $message = 'Congratulations!  Your file was accepted.';
                }
            }
            //if there is an error...
            else
            {
                //set that to be the returned message
                $message = 'Ooops!  Your upload triggered the following error:  '.$_FILES['testUpload']['error'];
            }
        }
        fwrite ($testLog ,$message);
        fwrite ($testLog ,var_dump($_FILES));
        fclose ($testLog);
    }
    add_action( 'woocommerce_checkout_update_order_meta', 'add_image');

    function add_checkout_notice() {
        echo    '<input type="file" name="testUpload" />';
    }
    add_action( 'woocommerce_checkout_before_customer_details', 'add_checkout_notice');
    ?>

您需要在子主题中调用以下函数。

function add_image($order_id){
  // Do your code of upload image.
} 
add_action( 'woocommerce_checkout_order_processed', 'add_image',  1, 1  );

Wooccommerce结账总是通过Ajax进行（我不确定是什么版本）

PLUGIN-DIR/woocommerce/assets/frontend/checkout.js这是负责签出操作的文件。

因此，除非您打算自己修改checkout.js文件，否则无法从签出页面上传文件。

如果您仍然喜欢从结账页面上传文件，您可以参考这个答案。

您看过高级自定义字段吗？https://www.advancedcustomfields.com/

你可以很容易地实现你想要做的事情。

看看这个https://www.advancedcustomfields.com/resources/acfupload_prefilter/