Question 9959 in Wordpress Question posted in
The official Wordpress documentation can be found here.

How to make a check in the wordpress library: did the user or the function upload the image to the admin panel?

I have the website on wordpress and function replace_uploaded_image in functions.php which uploads images from external url and transforms their original sizes to thumbnail sizes.

But I wouldn’t like to made this transformations when I directly upload images in admin library.

What condition do I need to supplement the function or on which hook to hang?

function replace_uploaded_image($image_data) {

  if (!isset($image_data['sizes']['thumbnail'])) return $image_data;

  // paths to the uploaded image and the thumbnail image
  $upload_dir = wp_upload_dir();
  $uploaded_image_location = $upload_dir['basedir'] . '/' .$image_data['file'];

  $current_subdir = substr($image_data['file'],0,strrpos($image_data['file'],"/"));
  $thumbnail_image_location = $upload_dir['basedir'] . '/'.$current_subdir.'/'.$image_data['sizes']['thumbnail']['file'];

  // delete the uploaded image
  unlink($uploaded_image_location);

  // rename the thumbnail image
  rename($thumbnail_image_location,$uploaded_image_location);

  // update image metadata and return them
  $image_data['width'] = $image_data['sizes']['thumbnail']['width'];
  $image_data['height'] = $image_data['sizes']['thumbnail']['height'];
  unset($image_data['sizes']['thumbnail']);

  return $image_data;
}

add_filter('wp_generate_attachment_metadata','replace_uploaded_image');
Tags:

2

Answers


  1. Chosen as BEST ANSWER
    0

    To resolve this issue first I was need to add second parametr $attachment_id to function replace_uploaded_image and then find out if the attachment has post_author.

    Full code:

    function replace_uploaded_image($image_data, $attachment_id) {

  // Check if the image was uploaded via the WordPress admin panel
  $attachment = get_post( $attachment_id );

  if (isset($attachment->post_author)) {
    return $image_data; // Return the unmodified image data
  }

  // if there is no thumbnail image : return
  if (!isset($image_data['sizes']['thumbnail'])) return $image_data;

  // paths to the uploaded image and the thumbnail image
  $upload_dir = wp_upload_dir();
  $uploaded_image_location = $upload_dir['basedir'] . '/' .$image_data['file'];
  // $thumbnail_image_location = $upload_dir['path'] . '/'.$image_data['sizes']['thumbnail']['file']; // ** This only works for new image uploads - fixed for older images below.
  $current_subdir = substr($image_data['file'],0,strrpos($image_data['file'],"/"));
  $thumbnail_image_location = $upload_dir['basedir'] . '/'.$current_subdir.'/'.$image_data['sizes']['thumbnail']['file'];

  // delete the uploaded image
  unlink($uploaded_image_location);

  // rename the thumbnail image
  rename($thumbnail_image_location,$uploaded_image_location);

  // update image metadata and return them
  $image_data['width'] = $image_data['sizes']['thumbnail']['width'];
  $image_data['height'] = $image_data['sizes']['thumbnail']['height'];
  unset($image_data['sizes']['thumbnail']);

  return $image_data;
}

add_filter('wp_generate_attachment_metadata','replace_uploaded_image', 10, 2 );

  2. 0

    You can add a condition that checks whether the image’s metadata contains a post_parent value. This value is only set when an image is uploaded via the admin panel. The post_parent value, the function can determine whether an image was uploaded via the admin panel or not, and only modify images that were uploaded from external URLs.

    Here’s the modified code:

    function replace_uploaded_image($image_data) {

  // Check if the image was uploaded via the WordPress admin panel
  if (isset($image_data['post_parent'])) {
    return $image_data; // Return the unmodified image data
  }

  // Continue with the rest of the function if the image was uploaded from an external URL
  if (!isset($image_data['sizes']['thumbnail'])) return $image_data;

  // Rest of the function code
  // ...
}

    The function will only modify images that were uploaded from external URLs and not via the admin panel.

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search