FOS\UserBundle\Form\UserForm::bind PHP Method

    public function bind(Request $request, $data = null)
    {
        if (!$this->getName()) {
            throw new FormException('You cannot bind anonymous forms. Please give this form a name');
        }
        // Store object from which to read the default values and where to
        // write the submitted values
        if (null !== $data) {
            $this->setData($data);
        }
        // Store the submitted data in case of a post request
        if ('POST' == $request->getMethod()) {
            $values = $request->request->get($this->getName(), array());
            $files = $request->files->get($this->getName(), array());
            $this->submit(self::deepArrayUnion($values, $files));
            $this->userManager->updateCanonicalFields($this->getData());
            $this->validate();
        }
    }