Reply To: Force an Image/File upload to a particular directory

• iamrobertandrews

• September 27, 2021 at 4:19 pm

John, thanks for the add_attachment tip.

I also found similar code at https://wordpress.stackexchange.com/a/310689/39300

Whilst it assumes Post is the connected object, it also works for User.

The following code now takes the connected User’s name and uses that also for Title and Alt fields.

All told, now I have:

• Filter avatars uploads to a specific folder
• Rename uploaded avatar to match username
• Use User’s name as attached image’s Title and Alt fields

Thanks!

/**
 * ==============================================================================
 *             ALSO SET IMAGE TITLE & ALT TO USER/POST NAME
 *    When an image is uploaded, use the attached Post (User) edtails
 *    to set Title, Alt fields etc.
 *    cf. https://wordpress.stackexchange.com/a/310689/39300
 *    cf. https://support.advancedcustomfields.com/forums/topic/force-an-image-file-upload-to-a-particular-directory/page/2/
 * ==============================================================================
 */

// https://wordpress.stackexchange.com/a/310689/39300
function my_set_image_meta_upon_image_upload( $post_ID ) {

    // "the first thing that your action should do is to remove
    // itself so that it does not run again."
    remove_filter('add_attachment', 'your_function_name_here');

    // Check if uploaded file is an image, else do nothing

    if ( wp_attachment_is_image( $post_ID ) ) {

        $my_image_title = get_post( $post_ID )->post_title;

        // Added by Robert Andrews
        // Get user name to use in image details
        $user = get_user_by( 'slug', $my_image_title );
        $user_name = $user->display_name;
        $my_image_title = $user_name;

        // Sanitize the title:  remove hyphens, underscores & extra spaces:
        // $my_image_title = preg_replace( '%[-_]+%', ' ',  $my_image_title );

        // Sanitize the title:  capitalize first letter of every word (other letters lower case):
        // $my_image_title = ucwords( strtolower( $my_image_title ) );

        // Create an array with the image meta (Title, Caption, Description) to be updated
        // Note:  comment out the Excerpt/Caption or Content/Description lines if not needed
        $my_image_meta = array(
            'ID'        => $post_ID,            // Specify the image (ID) to be updated
            'post_title'    => $my_image_title,     // Set image Title to sanitized title
            // 'post_excerpt'  => $my_image_title,     // Set image Caption (Excerpt) to sanitized title
            // 'post_content'  => $my_image_title,     // Set image Description (Content) to sanitized title
        );

        // Set the image Alt-Text
        update_post_meta( $post_ID, '_wp_attachment_image_alt', 'Photo of '.$my_image_title );

        // Set the image meta (e.g. Title, Excerpt, Content)
        wp_update_post( $my_image_meta );

    } 
}