signup_roles.module in Signup 7

The Signup roles module allows administrators to configure a site so that it grants one or more roles to users when they sign up to nodes.

File

modules/signup_roles/signup_roles.module

<?php

/**
 * @file
 * The Signup roles module allows administrators to configure a site so that it
 * grants one or more roles to users when they sign up to nodes.
 */

/**
 * Implements hook_signup_sign_up().
 */
function signup_roles_signup_sign_up($node, $account) {

  // We can't grant roles to anonymous users.
  if (empty($account->uid)) {
    return;
  }
  $grant_roles = variable_get('signup_roles_grant', array());

  // Filter down to only those roles that are selected.
  $grant_roles = array_filter($grant_roles);

  // If no roles are selected, there's nothing to do here.
  if (empty($grant_roles)) {
    return;
  }

  // Confirm only current roles are being granted.
  $site_roles = user_roles(TRUE);
  $grant_roles = array_intersect_key($site_roles, $grant_roles);
  $grant_roles_string = implode(', ', $grant_roles);

  // Make sure not to remove other roles in the process of granting new ones.
  $roles = $grant_roles;
  $roles += $account->roles;
  $success = user_save($account, array(
    'roles' => $roles,
  ));
  if ($success) {
    watchdog('signup_roles', 'Granted roles %roles to %name.', array(
      '%roles' => $grant_roles_string,
      '%name' => $account->name,
    ));
  }
  else {
    watchdog('signup_roles', 'Error granting roles %roles to %name', array(
      '%roles' => $grant_roles_string,
      '%name' => $account->name,
    ));
  }
}

/**
 * Implements hook_form_alter().
 */
function signup_roles_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'signup_settings_form') {

    // Only show them roles beyond the Authenticated.
    $roles = user_roles(TRUE);
    unset($roles[DRUPAL_AUTHENTICATED_RID]);
    $form['adv_settings']['signup_roles_grant'] = array(
      '#type' => 'checkboxes',
      '#title' => t('Grant these roles when a signup is created'),
      '#default_value' => variable_get('signup_roles_grant', array()),
      '#options' => $roles,
      '#weight' => 6,
    );

    // If they don't have roles beyond authenticated, advise them on what to do.
    if (empty($roles)) {
      $form['adv_settings']['signup_roles_grant']['#description'] = t('Your site has no roles beyond authenticated, <a href="!create_url">create a role</a> to use this feature', array(
        '!create_url' => url('admin/user/roles'),
      ));
      $form['adv_settings']['signup_roles_grant']['#disabled'] = TRUE;
    }
  }
}

/**
 * Public function for removing roles if a user cancels.
 *
 * This function is not automatically invoked by Signup. You should call this
 * function from your own code if you wish to remove roles.
 */
function signup_roles_cancel($account) {

  // We can't remove roles from anonymous users.
  if (empty($account->uid)) {
    return;
  }
  $remove_roles = variable_get('signup_roles_grant', array());

  // Filter down to only those roles that are selected.
  $remove_roles = array_filter($remove_roles);

  // If no roles are selected, there's nothing to do here.
  if (empty($remove_roles)) {
    return;
  }

  // Confirm only current roles are being removed.
  $site_roles = user_roles(TRUE);
  $remove_roles = array_intersect_key($site_roles, $remove_roles);
  $remove_roles_string = implode(', ', $remove_roles);

  // Make sure not to remove other roles in the process of removing these.
  $roles = array_diff_key($account->roles, $remove_roles);
  $success = user_save($account, array(
    'roles' => $roles,
  ));
  if ($success) {
    watchdog('signup_roles', 'Removed roles %roles from %name.', array(
      '%roles' => $remove_roles_string,
      '%name' => $account->name,
    ));
    return TRUE;
  }
  else {
    watchdog('signup_roles', 'Error removing roles %roles from %name', array(
      '%roles' => $remove_roles_string,
      '%name' => $account->name,
    ));
    return FALSE;
  }
}

Functions

Name	Description
signup_roles_cancel	Public function for removing roles if a user cancels.
signup_roles_form_alter	Implements hook_form_alter().
signup_roles_signup_sign_up	Implements hook_signup_sign_up().