Tom has a good point. I wouldn’t suggest anyone to do this.
However… Here’s how I previously did it 😉
It’s quite extensive, though.
Step 1 – Cut a hole in the box
- Add a file called ‘custom-upload-file.php’ in your WordPress theme-folder, and add this to it:
<?php
// Getting the header to get WordPress-functions available
require_once( $_SERVER['DOCUMENT_ROOT'] . '/wp-load.php' );
$errors = [];
$confirmation = [];
$post_id = '';
if( is_user_logged_in() ):
// Check that post_id is set
if( ! empty( $_POST['post_id'] ) ):
$post_id = $_POST['post_id'];
$docs_folder = $_SERVER['DOCUMENT_ROOT'] . '/wp-content/uploads/custom-uploaded-files';
// Check that the doc-folder exists
if( file_exists( $docs_folder ) ):
// Create the folder, if it doesn't exist
if( ! file_exists( $docs_folder . '/post' . $post_id ) ):
$folder_created = mkdir( $docs_folder . '/post' . $post_id );
if( ! $folder_created ):
$errors[] = 'Destination folder didnt exists and couldnt be created.';
endif; // if( $folder_created ):
endif; // if( file_exists( $docs_folder . '/post' . $post_id ) ):
// Check that the folder exists (which it always will, now)
if( file_exists( $docs_folder . '/post' . $post_id ) ):
// Check that the file aren't empty
if( ! empty( $_FILES['files']['name'][0] ) ):
$sanitized_filename = filter_var( $_FILES['files']['name'][0], FILTER_SANITIZE_URL );
$approved_formats = array(
'jpg',
'jpeg',
'png',
'gif',
// 'mov',
// 'avi',
'mpg',
// '3gp',
// '3g2',
// 'midi',
// 'mid',
'pdf',
'doc',
'ppt',
'odt',
'pptx',
'docx',
// 'pps',
// 'ppsx',
'xls',
'xlsx',
// 'key',
// 'mp3',
// 'ogg',
// 'flac',
// 'm4a',
// 'wav',
// 'mp4',
// 'm4v',
// 'webm',
// 'ogv',
// 'flv'
);
$fileinfo = pathinfo( $sanitized_filename );
$extension = $fileinfo['extension'];
if( in_array( $extension, $approved_formats ) ):
// Determining the filename
$counter = 1;
$file_name_path_not_available = true;
$filename = $fileinfo['filename'];
$filename_modification = '';
while( $file_name_path_not_available ):
if( file_exists( $docs_folder . '/post' . $post_id . "https://wordpress.stackexchange.com/" . $filename . $filename_modification . '.' . $extension ) ):
$filename_modification = '-' . $counter;
$counter ++;
else:
$file_name_path_not_available = false;
endif; // if( file_exists( $docs_folder . '/post' . $post_id . "https://wordpress.stackexchange.com/" . $fileinfo['basename'] ) ):
endwhile; // while( $file_name_path_not_available ):
// Saving the file
$file_uploaded = move_uploaded_file( $_FILES['files']['tmp_name'][0], $docs_folder . '/post' . $post_id . "https://wordpress.stackexchange.com/" . $filename . $filename_modification . '.' . $extension );
if( $file_uploaded ):
$file_info_array = array(
'uploaded_by' => get_current_user_id(),
'file_name' => $filename . $filename_modification . '.' . $extension
);
add_post_meta( $post_id, 'fileupload', serialize( $file_info_array ) );
$confirmation[] = 'Filen blev gemt.';
else:
$errors[] = 'Error. File was not saved.';
endif; // if( $file_saved ):
else:
$errors[] = 'Error. The format of the uploaded file wasnt allowed. Please try another format.';
endif; // if( in_array( $extension, $approved_formats ) ):
else:
$errors[] = 'No file was selected.';
endif; // if( !empty( $_POST['file'] ) ):
endif; // if( file_exists( $docs_folder . '/post' . $post_id ) ):
else:
$errors[] = 'The destination-folder didnt exists and couldnt be created.';
endif; // if( file_exists( $folder ) ):
else:
$errors[] = "The Post-ID was empty, so it couldnt be determined where it should be saved.";
endif; // if( !empty( $_POST['post_id'] ) ):
else:
$errors[] = "You are not logged in.";
endif; // if( ! is_user_logged_in() ):
$_SESSION['display_messages'] = true;
$_SESSION['upload_errors'] = $errors;
$_SESSION['upload_confirmation'] = $confirmation;
header( 'Location: ' . $_SERVER['HTTP_REFERER'] );
exit();
?>
It checks for a bunch of things. I tried added some good comments.
Step 2 – Put your junk in the box
Now create a custom page-template, again in your theme-folder and call it page-upload-file.php. Then put this inside that file:
<?php
/**
* Template Name: Upload file template
*/
get_header(); ?>
<main>
<div class="container-fluid">
<div class="container">
<div class="row">
<div class="col-8">
<h1>
<?php the_title(); ?>
</h1>
<div class="entry-content">
<?php the_content(); ?>
</div>
</div>
<!-- /.col-8 -->
<div class="col-4">
<form action="<?php echo get_stylesheet_directory_uri() . '/custom-upload-file.php'; ?>" method="post" enctype="multipart/form-data">
<input class="upload__file-button" type="file" name="files[]">
<!-- /.upload__files-label -->
<input type="hidden" name="post_id" value="<?php echo get_the_id(); ?>">
<input type="submit" value="Upload">
</form>
</div>
<!-- /.col-4 -->
</div>
<!-- /.row -->
</div>
<!-- /.container -->
</div>
<!-- /.container-fluid -->
</main>
<?php get_footer(); ?>
Step 3 – Make her open the box
Then create a new page and set the new page-template. And try it out.
I haven’t tested it though, but the code is pulled and modified a bit from a previous solution that is in production. So I know that I got it working at some point.