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This is part two to this question: Post Specific Uploader

I am using an upload filter to put files in a location based on post_id. Now when the file uploads, the URL path in the meta is wrong and the image preview is broken (missing the post_id).

the URL shows as: http://foo.com/blog/wp-content/uploads/icon_jpeg.png but should (in this case) be: http://foo.com/blog/wp-content/uploads/571/icon_jpeg.png

This part is truly magic to me. Should the path be correct if those were the value when the file was uploaded? Is there a query param I need to change?

Thanks for helping a WP noob!


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up vote 1 down vote accepted

untested, but it should work theoretically:

add_filter('get_attached_file', function($path, $file, $attachment_id){

  // get the post object of the current attachment
  $att = get_post($attachment_id);

  // prepend attachment post parent ID to the file name
  return substr_replace($path, "{$att->post_parent}/{$file}", -strlen($file));

Another filter, attempts to "fix" the path returned by WP's upload handler:

add_filter('wp_handle_upload', function($results){
  global $post;

    return $results;


  $uploads = wp_upload_dir();

  $file = str_replace($uploads['basedir'], "{$uploads['basedir']}/{$post->ID}", $file);
  $url = str_replace($uploads['baseurl'], "{$uploads['baseurl']}/{$post->ID}", $url);

  return compact('file', 'url', 'type');

This will not work if the media uploader doesn't expose the current post inside the global $post variable.

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Ill give it a shot! So it looks as if i am grabbing the post var in transit? Here is the odd thing, if i close the result window, and open it again, the preview path is right, and the image IS there! – roberthuttinger Apr 5 '12 at 3:31
before I give this a shot can you walk thru this or comment? does get_attached_file only affect the file path immediately after upload? .. sigh 15 rep to upvote... – roberthuttinger Apr 5 '12 at 13:47
That function should be called every time you request an image from an attachment. It will get the file name of the image (which is a meta value of the attachment), then it appends it to the wp upload path to generate the full image path. What function are you using to display these images? – onetrickpony Apr 5 '12 at 14:55
it only needs to be fixed immediately after the upload. Right after I upload, the uploader shows the image and the path, but they are both wrong. BUT, if I close the media uploader window, then reopen it, the path and the thumbnail do appear. I guess I could strstr() for the presence of the post_id and if not there, then alter. I think my question is, why is it happening only immediately after the download. Thanks for your help! – roberthuttinger Apr 5 '12 at 15:19
This is because the uploader will update the current page based on the paths returned by the upload handler. I added another filter for that, it probably won't work though... – onetrickpony Apr 5 '12 at 15:44

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