Cannot post to root when root is subdirectory

[OhMyMndy]

It is not possible to send a POST request to the root of your application if your application is in a subdirectory (localhost/app/ for example) with a form generated by form_open.

The form action is /localhost/app which redirects to /localhost/app/ so the POST variables are lost...

I solved this temporarily to manually set the url for the form with a trailing slash, but this shouldn't be the way I guess...

This is the code I have used in my page
function onStart(){ $this['url'] = Request::url() ."/"; }

In my HTML/TWIG

{{ form_open({ 'files': 'true', 'url': url}) }} {{ form_close}}

[toome123]

Why you don't use ajax features to send data to server ...

http://octobercms.com/docs/cms/ajax
you can implement the same features with ajax.

or use virtual machine http://www.vagrantup.com/

[sulazix]

I can confirm this issue, can be problematic with fileupload which won't work with {{form_ajax()}} #1112

[daftspunk]

This is actually caused by your webserver adding the trailing slash because the public path is treated as a directory. This only occurs when the website exists in a subdirectory.

The solution used by @RoySchoep is the best workaround.