在WooCommerce中以编程方式为产品添加更多可下载文件 [英] Adding programatically more downloadable files for products in WooCommerce
问题描述
我正在尝试在woocommerce产品中再上传一个可下载文件。我的产品中已经有一个可下载文件,并且想要再添加一个。
I am trying to uploaded one more downloadable files in woocommerce product. I have already one downloadable file in my product and want to add one more.
为此,我正在使用以下代码:
For this I am using following code:
if($_FILES){
$attachment_id = media_handle_upload( 'abe_update_epub', $post_id );
if ( is_wp_error( $attachment_id ) ) {
$errors = $attachment_id->get_error_messages();
foreach( $errors as $error ){
echo $error;
}
echo 'There was an error uploading the image';
} else {
// to get exiting file/Old file
$abe_file = get_post_meta($abe_post_id, '_downloadable_files', true);
foreach($abe_file as $abe){
$name = $abe['name'];
$url = $abe['file'];
}
// This is my new file which i want to upload also
$file_name = 'Epub Files';
$file_url1 = wp_get_attachment_url($attachment_id);
$files[md5( $file_url )] = array(
'name' => $file_name,
'file' => $file_url
);
update_post_meta( $post_id, '_downloadable_files', $files );
echo 'The image was uploaded successfully!';
}
}
此功能以正确的方式上传文件,但是它将旧文件替换为新文件。
This function upload files in a correct way, But it replace the old file by the new one.
如何解决此问题?
这个脚本在做什么?
How I can solve this issue?
What am I doing wrong in this script?
谢谢
推荐答案
— 权威性更新3
其中存在很多错误您的代码:
在您的代码中, get_post_meta()
函数:
-替换了未定义 $ abe_post_id
通过定义的 $ post_id
。
-删除了第三个参数 true
,因为它是一个数组(不是字符串)。
In your code there is 2 mistakes in get_post_meta()
function:
- Replaced undefined $abe_post_id
by defined $post_id
.
- Removed third argument "true"
as it's an array (NOT a string).
$ abe_file
的输出数组是三维数组,其结构类似于以下示例:
The outputted array of $abe_file
is a tri-dimensional array with a structure similar to this example:
array(
0 => array(
"67f3fe902b6c55ac07b92ac804d1a9c8" => array(
"name" => "filename1"
"file" => "http://www.domain.tld/wp-content/uploads/woocommerce_uploads/2016/09/file1.pdf"
),
"95ce074e798b2e9d6d0d4cbce02f0497" => array(
"name" => "filename2"
"file" => "http://www.domain.tld/wp-content/uploads/woocommerce_uploads/2016/09/file2.pdf"
)
)
);
您无需在foreach循环中迭代此数组和以前一样,因为您只想在其中插入新文件。您必须确保 $ post_id
是产品的ID(如 $ abe_post_id
未定义)…
You don't need to iterate this array in a foreach loop as before, because you just want to insert your new file in it. You have to be sure that $post_id
is the ID of your product (as $abe_post_id
was undefined)…
这是工作中的更新代码:
This is the working updated code:
if($_FILES){
$attachment_id = media_handle_upload( 'abe_update_epub', $post_id );
if ( is_wp_error( $attachment_id ) ) {
$errors = $attachment_id->get_error_messages();
foreach( $errors as $error ){
echo $error;
}
echo 'There was an error uploading the image';
} else {
// Get exiting array of downloadable files. IMPORTANT:
// 1) => Removed "true" condition as it's an array (ot a string)
// 2) => As "$abe_post_id" is not defined, I have replace it with "$post_id"
$abe_file = get_post_meta($post_id, '_downloadable_files'); // removed "true"
// NEW FILE: Setting the name, getting the url and and Md5 hash number
$file_name = 'Epub Files';
$file_url = wp_get_attachment_url($attachment_id);
$md5_num = md5( $file_url );
// Inserting new file in the exiting array of downloadable files
$abe_file[0][$md5_num] = array(
'name' => $file_name,
'file' => $file_url
);
// Updating database with the new array
update_post_meta( $post_id, '_downloadable_files', $abe_file[0] );
// Displaying a success notice
echo 'The image was uploaded successfully!';
}
}
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