Contact form doesn’t submit on pages with query string

I have the same problem using Polylang plugin.

Can I see the site?

I temporarily put back one of the contact forms for you to see: https://fleishmanhillard.de/contact/general-inquiries/?lang=en

Okay. It’s obviously WPML’s problem. Wait for them to fix it.

So you’re saying when CF7 builds the URL to submit the contact form via ajax, it builds it correctly without the query string, but you saw WPML add it prior to submission?

Or is that query string already present when CF7 builds the URL?

The API route URL is built with this function call:

rest_url( 'contact-form-7/v1' )

This is the correct output:

https://fleishmanhillard.de/wp-json/contact-form-7/v1

This is what you see when WPML interferes:

https://fleishmanhillard.de/wp-json/?lang=en/contact-form-7/v1

I solved it by adding a filter to the REST URL that moves the query string to the end.

add_filter('rest_url', function($url) {
    $result = preg_match('/(\?.+)\//U', $url, $matches);
    if (!$result || !isset($matches[0]) || !isset($matches[1])) {
        return $url;
    }
    $url = str_replace($matches[0], '', $url);

    return $url . $matches[1];
});

• This reply was modified 7 years, 6 months ago by Ryan Sechrest.