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

• iamrobertandrews

• September 16, 2021 at 12:01 pm

Interestingly, get_source_field() is in a different place in my version of ACF Pro – media.php – and it’s a <em>private</em> function (any way around that?)

1)

So, if I straight-up attempt to get the source field using that inside my WP upload pre-filter…

add_filter('wp_handle_upload_prefilter', 'custom_upload_filter' );
 
function custom_upload_filter( $file ) {

    // Attempt to get the ACF field
    $field = get_source_field();

    // Begin testing rename - not the finished article
    $file['name'] = 'and-everything-is-awesome-' . $file['name'];
    return $file;

}

… then the Media uploader warns:

“Post-processing of the image likely failed because the server is busy or does not have enough resources. Uploading a smaller image may help. Suggested maximum size is 2500 pixels.”

2)

But, if I ostensibly copy the function code into my filter function…

add_filter('wp_handle_upload_prefilter', 'custom_upload_filter' );
 
function custom_upload_filter( $file ) {

    // 1. GET SOURCE FIELD, FROM MEDIA.PHP

    $field = false;
    // Search for field key within available data.
    // Case 1) Media modal query.
    if ( isset( $_POST['query']['_acfuploader'] ) ) {
        $field_key = (string) $_POST['query']['_acfuploader'];

        // Case 2) Media modal upload.
    } elseif ( isset( $_POST['_acfuploader'] ) ) {
        $field_key = (string) $_POST['_acfuploader'];
    }

    // Attempt to load field.
    // Note the <code>acf_get_field()</code> function will return false if not found.
    if ( isset( $field_key ) ) {
        $field = acf_get_field( $field_key );
    }

    // 2. GET USER'S ID AND USERNAME
 

    // TEST RENAME
    $file['name'] = $user_id . 'and-everything-is-awesome-' . $file['name'];
    return $file;

}

… it successfully gets the field key at that point, and therefore supports getting the field, too.

So, let me think, what logic should I be using here… ?

* If this is an ACF field with the specified key (since wp_handle_upload_prefilter will otherwise fire on every upload),
* Get the User ID for the User in the current Edit page
* Get User object and then Username slug
* Use that to recompose the filename, but retain the original extension

If so, I’m now hitting a non-ACF snag actually obtaining the current user from user-edit.php

ie. the following and another method…

    // 2. GET USER'S ID AND USERNAME

    // If is current user's profile (profile.php)
    if ( defined('IS_PROFILE_PAGE') && IS_PROFILE_PAGE ) {
        $user_id = get_current_user_id();
    // If is another user's profile page
    } elseif (! empty($_GET['user_id']) && is_numeric($_GET['user_id']) ) {
        $user_id = $_GET['user_id'];
    // Otherwise something is wrong.
    } else {
        die( 'No user id defined.' );
    }

… provoke “An error occurred in the upload. Please try again later.” in the upload window… maybe because, the browser is still on the same page, user_id is not available at the point the “Select Image” modal has appeared?? Hmm…