/**
* Masquerades the current user as a given user.
*
* Access to masquerade as the target user account has to checked by all callers
* via masquerade_target_user_access() already.
*
* @param \Drupal\user\UserInterface $user
* The user account object to masquerade as.
*
* @return \Symfony\Component\HttpFoundation\RedirectResponse
* Redirect to previous page.
*
* @see this::getRedirectResponse()
*/
public function switchTo(UserInterface $user)
{
// Store current user for messages.
$account = $this->currentUser;
$error = masquerade_switch_user_validate($user);
if (empty($error)) {
if ($this->masquerade->switchTo($user)) {
drupal_set_message($this->t('You are now masquerading as @user.', array('@user' => $account->getDisplayName())));
}
} else {
drupal_set_message($error, 'error');
}
return $this->getRedirectResponse();
}
/**
* {@inheritdoc}
*/
public function validateForm(array &$form, FormStateInterface $form_state)
{
$user_id = $form_state->getValue('masquerade_as');
if (empty($user_id)) {
$form_state->setErrorByName('masquerade_as', $this->t('The user does not exist. Please enter a valid username.'));
return;
}
$target_account = $this->entityManager->getStorage('user')->load($user_id);
if ($error = masquerade_switch_user_validate($target_account)) {
$form_state->setErrorByName('masquerade_as', $error);
} else {
$form_state->setValue('masquerade_target_account', $target_account);
}
}