Uploading dwg files to wordpress

Question

I'm trying to upload files with dwg extension to media but when I do that I get an error telling me that uploading files with this extension is not allowed. I tried to upload them via ftp but I cannot see them in my panel afterwards. I've looked for a solution online and tried adding this to my functions.php:

function custom_upload_mimes ( $existing_mimes=array() ) {
    $existing_mimes[‘dwg’] = ‘application/dwg’;
    return $existing_mimes;
}
add_filter(‘upload_mimes’,’custom_upload_mimes’);

But it didn't change anything. Is there any other way to bypass this file restriction?

Answer 1

Your code should work just fine. The only problem in there is that you’ve set incorrect mime type, I guess...

It should be image/vnd.dwg.

So this one should work:

function custom_upload_mimes ( $existing_mimes=array() ) {
    $existing_mimes['dwg'] = 'image/vnd.dwg';
    return $existing_mimes;
}
add_filter('upload_mimes', 'custom_upload_mimes');

Answer 2

If it can help: to fix the Due to safety reasons this file type is not allowed error

you need to add this in the wp-config.php :

define('ALLOW_UNFILTERED_UPLOADS', true);

The dwg mimes are multiple, you should add all these:

function custom_upload_mimes ( $existing_mimes=array() ) {
    $existing_mimes['dwg'] = 'image/vnd.dwg';
    $existing_mimes['dwg'] = 'application/acad';
    $existing_mimes['dwg'] = 'application/autocad';
    $existing_mimes['dwg'] = 'application/autocaddwg';
    $existing_mimes['dwg'] = 'application/dwg';
    $existing_mimes['dwg'] = 'drawing/dwg';
    $existing_mimes['dwg'] = 'image/dwg';

    return $existing_mimes;
}
add_filter('upload_mimes', 'custom_upload_mimes');