function antibot_form_validation in Antibot 8

Same name and namespace in other branches

1. 7 antibot.module \antibot_form_validation()

Validation callback for Antibot-enabled forms.

See also

antibot_form_alter()

1 string reference to 'antibot_form_validation'

antibot_protect_form in ./antibot.module

Helper function to enable Antibot protection for a given form.

File

./antibot.module, line 144

Implements the antibot module.

Code

function antibot_form_validation($form, FormStateInterface $form_state) {

  // Stop validation if the form was submitted programmatically.
  if ($form_state
    ->isProgrammed()) {
    return;
  }

  // Get the user input.
  $input = $form_state
    ->getUserInput();

  // Extract the submitted key.
  $submitted_key = isset($input['antibot_key']) ? $input['antibot_key'] : NULL;

  // Views exposed forms will initially load and submit without the key.
  if ($form['#form_id'] == 'views_exposed_form' && $submitted_key === NULL) {

    // We must allow this.
    return;
  }

  // Check if the key is missing or is not a match.
  if (!$submitted_key || $submitted_key != $form['#antibot_key']) {
    $form_state
      ->setErrorByName('', t('Submission failed. Please reload the page, ensure JavaScript is enabled and try again.'));
  }
}