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Randomize File Name in Document Upload

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Viewing 7 posts - 1 through 7 (of 7 total)
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    Posts
  • February 21, 2023 at 10:05 PM #40648
    lighterdayzlighterdayz
    Participant

    Hi, I am setting up a user profile where the user will upload their resume/cv document or pdf to /uploads/resume/. I would like to randomize the name of the file so that it can't be guessed. I'd like to use something like below, but only for this "/uploads/resume/" directory. How can I target that directory? And would the below code work?

    // randomize upload filenames 
function ajf_randomize_uploaded_filename( $filename ) {

	// Add extension
    $ext  = empty( pathinfo( $filename )['extension'] ) ? '' : '.' . pathinfo( $filename )['extension'];

    // return the first 10 characters of the MD5 hash of the name, along with the extension
    return substr(md5($filename), 0, 10) . $ext;
}

add_filter( 'sanitize_file_name', 'ajf_randomize_uploaded_filename', 10 );

    Thanks!

    February 22, 2023 at 6:29 PM #40667
    PeterPeter
    Moderator

    Hello,

    You can use the field file to use the custom upload folder for uploaded files. Please read more on the documentation https://docs.metabox.io/fields/file/

    For example: 

    'upload_dir' => WP_CONTENT_DIR . '/uploads/resume/',

    If you want to create a custom callback function to generate a unique file name, please refer to this topic https://support.metabox.io/topic/dynamic-uploaded-filename

    February 23, 2023 at 1:01 AM #40685
    lighterdayzlighterdayz
    Participant

    Do you mean unique does what I need? It will create a hash instead of the actual file name plus 1, 2, etc?

    I've already set up the field in the builder and already created/directed to the directory.

    I need a randomized file name based on MD5 hash so people can't guess it. Doesn't "unique" mean that is just adds a number to the end. I need the original file name sanitized and added as the md5 hash.

    Can you help with that?

    February 23, 2023 at 5:43 PM #40696
    PeterPeter
    Moderator

    Hello,

    Yes, I think it is what you need. You can add md5() hash function or anything to the file name like this reply https://support.metabox.io/topic/dynamic-uploaded-filename/?swcfpc=1#post-34422

    The setting unique_filename_callback helps you to execute a callback function like your function ajf_randomize_uploaded_filename()

    February 28, 2023 at 7:27 AM #40753
    lighterdayzlighterdayz
    Participant

    I'm still not completely clear how to do this. (read I don't know what I'm doing here.) I'm using the builder.

    The file field is a User Profile field.(So, "Post Meta" and "post-meta"?)
    I don't see a text domain. (is that field group?)

    Field title is "resume".

    Can you correct this?
    Thanks!

    ---------------------------------

    function ajf_unique_filename_callback( $dir, $name, $ext ) {
    $name = $name;
    return substr(md5($filename), 0, 10) . $ext;

}

add_filter( 'rwmb_meta_boxes', 'ajf_randomize_uploaded_filename' );
function ajf_randomize_uploaded_filename( $meta_boxes ) {

    $meta_boxes[] = [
<strong>        'title'  => __( 'Post Meta', 'your-text-domain' ),
        'id'     => 'post-meta',</strong>
        'fields' => [
            [
                'name'                     => __( 'File', 'resume' ),
                'id'                       => 'file',
                'type'                     => 'file',
                'upload_dir'               => WP_CONTENT_DIR . '/uploads/resumes/',
                'unique_filename_callback' => 'my_unique_filename_callback',
            ],
        ],
    ];
    return $meta_boxes;
}
    February 28, 2023 at 6:27 PM #40756
    PeterPeter
    Moderator

    Hello,

    Please check this code for example:

    function my_unique_filename_callback( $dir, $name, $ext ) {
    $name = substr(md5($name), 0, 10);
    return $name . $ext;
}

add_filter( 'rwmb_meta_boxes', 'ajf_randomize_uploaded_filename' );
function ajf_randomize_uploaded_filename( $meta_boxes ) {

    $meta_boxes[] = [
        'title'  => __( 'My User Meta', 'your-text-domain' ),
        'id'     => 'my-user-meta',
        'type'   => 'user',
        'fields' => [
            [
                'name'                     => __( 'File', 'resume' ),
                'id'                       => 'file',
                'type'                     => 'file',
                'upload_dir'               => WP_CONTENT_DIR . '/uploads/resumes/',
                'unique_filename_callback' => 'my_unique_filename_callback',
            ],
        ],
    ];
    return $meta_boxes;
}

    If you don't know how to use the code to register custom fields and meta box, please read more on the documentation https://docs.metabox.io/creating-fields-with-code/

    February 28, 2023 at 9:34 PM #40759
    lighterdayzlighterdayz
    Participant

    Thank you! I was able to create the text domain on the "get php code" button on the field group. I will try this.

    I appreciate the help very much!

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