以编程方式在 Woocommerce 可下载产品中添加下载 [英] Add downloads in Woocommerce downloadable product programmatically

问题描述

我正在创建一个 Woocommerce 网站，我想让供应商从他们的前端上传产品.但我坚持要尝试添加 woocommerce 可下载产品.

I am creating a Woocommerce site where I wanna give vendors to upload products from their front end. But I stuck on a point where I am trying to add woocommerce downloadable products.

这是我当前的代码:

//Let's upload the download file Zip 
    $zipattachment_id = upload_music_files($music_ID, $musicZip); //This is my custom function which returns attachment id after file upload

    $download_file_name = $musicZip['name'];
    $download_file_url  = wp_get_attachment_url($zipattachment_id);
    $md5_download_num = md5( $download_file_url );

    //creating array of download product
    $downloadable_file[$md5_download_num] = array(
        'id'   =>  $md5_download_num,
        'name'   =>  $download_file_name,
        'file'   =>  $download_file_url,
        'previous_hash' => ''
    );
    $downloadMusic = serialize($downloadable_file);

    // adding downloadble file with the new array
    add_post_meta( $music_ID, '_downloadable_files', $downloadMusic );

但是当我从后端打开产品编辑时，没有可下载的文件退出.

But when I open the product edit from backend no downloadable files exits.

这是序列化数组的返回示例:

Here is example return of the seriallized array :

a:1:{s:32:"22618d7f028803f57f98ab6b21277387";a:4:{s:2:"id";s:32:"22618d7f028803f57f98ab6b21277387";s:4:"name";s:5:"1.zip";s:4:"file";s:71:"http://mydomain/wp-content/uploads/2017/12/5a2e22cecaca6_1.zip";s:13:"previous_hash";s:0:"";}}

我正在使用最新版本的 woocommerce，有人可以告诉我我做错了什么以及什么是正确的方法吗?

I am working with the latest version of woocommerce, can anybody suggest me what I am doing wrong and what can be the right way?

推荐答案

你最好使用 WC_Product 和 WC_Product_Download 方法.我重新审视了您的代码，重命名/缩短了您的变量名称.

You should better use WC_Product and WC_Product_Download methods. I have revisited your code renaming/shortening a bit your variables names.

代码:

//This is my custom function which returns attachment id after file upload
$zip_attachment_id = upload_music_files( $music_id, $music_zip ); 

$file_name = $music_zip['name'];
$file_url  = wp_get_attachment_url( $zip_attachment_id );
$download_id = md5( $file_url );

// Creating an empty instance of a WC_Product_Download object
$pd_object = new WC_Product_Download();

// Set the data in the WC_Product_Download object
$pd_object->set_id( $download_id );
$pd_object->set_name( $file_name );
$pd_object->set_file( $file_url );

// Get an instance of the WC_Product object (from a defined product ID)
$product = wc_get_product( $music_id ); // <=== Be sure it's the product ID

// Get existing downloads (if they exist)
$downloads = $product->get_downloads();

// Add the new WC_Product_Download object to the array
$downloads[$download_id] = $pd_object;

// Set the complete downloads array in the product
$product->set_downloads($downloads);
$product->save(); // Save the data in database

经过测试并有效

现在您必须确保您的 $music_id 变量是产品 ID:

Now you have to be sure that your $music_id variable is the product ID in:

$product = wc_get_product( $music_id );

如果不是，您应该直接从 global $product;

If not you should get directly the WC_Product object from global $product;

OR 来自 global $post; 和 $product_id = $post->ID; 的产品 ID，在代码:

OR the product ID from global $post; and $product_id = $post->ID;, making some changes in the code:

global $post;
$product = wc_get_product( $post->ID );

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