course_signup.module in Course 7

File

modules/course_signup/course_signup.module

<?php

/**
 * Signup course admin form.
 */
function course_signup_admin($form, &$form_state) {
  $form = array();
  $form['signup_intro']['#markup'] = t("Course uses Signup's built-in functionality to allow users to register for courses and for administrators to manage attendance.");
  $form['course_signup_bypass_checkout'] = array(
    '#title' => t('Bypass registration and checkout for free courses.'),
    '#type' => 'checkbox',
    '#default_value' => variable_get('course_signup_bypass_checkout', 1),
    '#description' => t("Turning this on will allow registered users to immediately begin free courses without going through any kind of course registration or checkout when Ubercart Signup is used."),
  );
  return system_settings_form($form);
}

/**
 * Implements hook_menu().
 */
function course_signup_menu() {
  $items = array();
  $items['admin/course/signup'] = array(
    'access arguments' => array(
      'administer courses',
    ),
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'course_signup_admin',
    ),
    'type' => MENU_LOCAL_TASK,
    'title' => 'Signup',
  );
  return $items;
}

/**
 * Do a quick registration.
 *
 * @param stdClass $node
 *   A signup enabled course node.
 * @param stdClass $user
 *   A user.
 * @param bool $notify
 *   Notify the user of this signup. This is passed to signup_sign_up_user().
 */
function course_signup_quick_register($node, $account, $notify = TRUE) {
  if (!($signup = db_query('SELECT * FROM {signup_log} WHERE nid = :nid AND uid = :uid', array(
    ':nid' => $node->nid,
    ':uid' => $account->uid,
  ))
    ->fetch())) {

    // Save a new signup.
    if ($node->signup_status && $notify) {

      // Signup is open so we can use signup's function.
      signup_sign_up_user(array(
        'nid' => $node->nid,
        'uid' => $account->uid,
      ), $notify);
    }
    else {

      // The signup was closed. Do it silently. We can't use
      // signup_sign_up_user() because this would result in a
      // drupal_access_denied() call.
      $signup = new stdClass();
      $signup->nid = $node->nid;
      $signup->uid = $account->uid;
      $signup->signup_time = REQUEST_TIME;
      $signup->form_data = array();
      $signup->count_towards_limit = 1;
      signup_save_signup($signup);
      $signup = signup_load_signup($signup->sid);
      if ($node->signup_send_confirmation) {
        signup_send_confirmation_mail($signup, $node);
      }
    }
  }
  else {

    // Maybe we are "approving" an enrollment.
    $signup->count_towards_limit = 1;
    signup_save_signup($signup);
  }
}

/**
 * Implements hook_signup_insert().
 *
 * Enroll a user in the course if they sign up for a course.
 */
function course_signup_signup_insert($signup) {
  course_signup_signup_enroll($signup);
}

/**
 * Implements hook_signup_update().
 *
 * Enroll a user in criteria passes when the sign up gets updated (status etc).
 */
function course_signup_signup_update($signup) {
  course_signup_signup_enroll($signup);
}

/**
 * Implements hook_signup_delete().
 *
 * Un-enroll the user.
 */
function course_signup_signup_delete($signup) {
  $node = node_load($signup->nid);
  $user = user_load($signup->uid);
  course_unenroll($node, $user);
}

/**
 * Helper signup course enroll criteria function for insert & update.
 *
 * @see course_signup_signup_insert()
 * @see course_signup_signup_update()
 */
function course_signup_signup_enroll($signup) {
  if ($enrollment = course_enrollment_load($signup->nid, $signup->uid)) {

    // Found an enrollment already.
    if (!$enrollment->status) {

      // Don't process this enrollment, because it was marked as inactive.
      return;
    }
  }
  if ($signup->uid && $signup->nid && $signup->count_towards_limit && empty($signup->anon_mail)) {
    $node = node_load($signup->nid);
    if (course_node_is_course($node)) {
      $user = user_load($signup->uid);
      course_enroll($node, $user, 'course_signup');
    }
  }
}

/**
 * Implements hook_signup_cancel().
 *
 * Un-enroll user from course on signup cancellation.
 */
function course_signup_signup_cancel($signup, $node) {

  // TODO Convert "user_load" to "user_load_multiple" if "$signup->uid" is other than a uid.
  // To return a single user object, wrap "user_load_multiple" with "array_shift" or equivalent.
  // Example: array_shift(user_load_multiple(array(), $signup->uid))
  $user = user_load($signup->uid);
  course_unenroll($node, $user);
}

/**
 * Implements hook_init().
 *
 * Override signup admin VBO to use course VBO. Enroll user in course before the
 * access checks happen if the user can quick register.
 */
function course_signup_init() {
  $node = node_load(arg(1));
  global $conf;
  global $user;
  if (course_node_is_course($node)) {
    global $conf;

    // Switch courses to our view with enrollments and bulk operations.

    //$conf['signup_admin_list_view'] = variable_get('signup_admin_list_view_course_override', 'course_signup_user_vbo_admin');
    $conf['signup_ignore_default_fields'] = 1;
    $conf['signup_fieldset_collapsed'] = 0;
    $conf['uc_signup_add_cart_text'] = t('Register');
    $conf['uc_signup_signups_closed_text'] = t('Registration is closed for this activity.');
  }
}

/**
 * Implements hook_form_FORMID_alter().
 *
 * Pre-fill user email to signup email. We'll probably kill this step in the
 * future anyway.
 */
function course_signup_form_uc_signup_attendees_form_alter(&$form, &$form_state) {
  global $user;
  if (!empty($user->mail)) {
    foreach ($form as $key => $element) {
      if ($element['#type'] == 'fieldset') {
        $form[$key][0]['#default_value'] = $user->mail;
        $form[$key][0]['#value'] = $user->mail;
        $form[$key][0]['#disabled'] = TRUE;
        $form[$key][0]['#description'] = t('Your email has been pre-filled from your account.');
      }
    }
  }
}

/**
 * Implements hook_add_to_cart().
 *
 * Skip the uc_signup screens for course signups.
 */
function course_signup_add_to_cart($nid, $qty, $data) {
  global $user;
  $node = node_load($nid);
  if (course_node_is_course($node) && $node->signup) {

    // Node is a course and a signup.
    $_SESSION['uc_signup']['nids'][$nid][0] = $user->mail;
  }
}

/**
 * Implements hook_course_enroll().
 *
 * If a user is enrolled outside of signup, sign them up as well.
 */
function course_signup_course_enrollment_insert($enrollment) {

  // Check if uc_signup is enabled and this enrollment is from ubercart. If it
  // is, we don't want to sign the user up, because uc_signup will convert the
  // temporary signup and create a duplicate.
  $uc_signup = module_exists('uc_signup') && $from == 'ubercart' && isset($_SESSION['uc_signup']);
  $uc_sid = FALSE;
  if ($uc_signup) {
    $uc_sid = db_query("SELECT ucsl.sid FROM {uc_signup_log} ucsl\n      LEFT JOIN {signup_log} sl USING (sid)\n      WHERE sl.nid = :sl.nid AND sl.uid = :sl.uid", array(
      ':sl.nid' => $enrollment->nid,
      ':sl.uid' => $enrollment->uid,
    ))
      ->fetchField();
  }
  if ($enrollment->enrollmenttype != 'course_signup' && !$uc_sid) {
    $node = node_load($enrollment->nid);
    $account = user_load($enrollment->uid);
    course_signup_quick_register($node, $account);
  }
}

/**
 * Implements hook_course_unenroll().
 *
 * Delete the signup after unenroll.
 */
function course_signup_course_enrollment_delete($enrollment) {
  db_query("DELETE FROM {signup_log} WHERE nid = :nid and uid = :uid", array(
    ':nid' => $enrollment->nid,
    ':uid' => $enrollment->uid,
  ));
}

/**
 * Implements hook_course_access().
 */
function course_signup_course_access($op, $node, $user) {
  if ($op == 'enroll') {
    $hooks = array();

    // We depend on Signup Restrict by Role for enrollment access per role.
    if (module_exists('signup_restrict_by_role')) {
      $check = signup_restrict_by_role_access_signup($node, $user);
      $check['message'] = str_replace('signup', 'course enrollment', $check['message']);
      $hooks[] = $check;
    }
    if (!empty($node->signup)) {
      if (!empty($node->signup_status)) {
        module_load_include('inc', 'signup', 'includes/date');
        if (($field = signup_date_field($node->type)) && $field != 'none') {
          $items = field_get_items('node', $node, $field['field_name']);
          if (!empty($items[0]['value'])) {

            // This node is signup-enabled and closed by date.
            $close_stamp = strtotime($items[0]['value'] . ' UTC');
            $signup_close_early = variable_get('signup_close_early', 0);
            $close_stamp -= $signup_close_early * 3600;
            if (REQUEST_TIME > $close_stamp) {
              $hooks['course_signup'] = array(
                'header' => t(''),
                'success' => FALSE,
                'message' => t('Enrollments closed on @date.', array(
                  '@date' => format_date($close_stamp, 'long'),
                )),
                'weight' => 100,
              );
            }
          }
        }
      }
      else {

        // This node is signup-enabled and closed.
        $hooks['course_signup'] = array(
          'header' => t(''),
          'success' => FALSE,
          'message' => t('Enrollments are closed.'),
          'weight' => 100,
        );
      }
    }
    return $hooks;
  }
}

/**
 * Implements hook_views_api().
 */
function course_signup_views_api() {
  return array(
    'api' => '3.0',
  );
}

/**
 * Implements hook_course_handlers().
 */
function course_signup_course_handlers() {
  return array(
    'object' => array(
      'signup_attendance' => array(
        'name' => t('Attendance'),
        'class' => 'CourseObjectSignup',
        'description' => t('An attendance course object.'),
      ),
    ),
  );
}

/**
 * Track attendance.
 *
 * @todo, find a better way? looking at you, @see signup_mark_attended_action
 */
function course_signup_watchdog($watchdog) {
  if (preg_match('/Marked signup @signup_id attended./', $watchdog['message'])) {
    $sid = reset($watchdog['variables']);
    $signup = signup_load_signup($sid);
    $account = user_load($signup->uid);
    $complete = strpos($watchdog['message'], 'did not') === FALSE;
    if ($courseObject = course_get_course_object('course_signup', 'signup_attendance', $signup->nid, $account)) {
      $courseObject
        ->getFulfillment()
        ->setComplete($complete)
        ->save();
    }
  }
}

/**
 * Create a signup for every enrollment.
 */
function course_signup_migrate_enrollments() {
  if (db_table_exists('course_enrollment') && db_table_exists('signup_log')) {

    // Ensure a signup exists for each full course enrollment.
    $sql = "SELECT ce.* FROM {course_enrollment} ce\n    LEFT JOIN {signup_log} sl ON (ce.nid = sl.nid AND ce.uid = sl.uid)\n    where sid is null and ce.status";
    $result = db_query($sql);
    while ($row = $result
      ->fetch()) {
      $row->signup_time = $row->timestamp;
      drupal_write_record('signup_log', $row);
    }
  }
}

/**
 * Get a signup from a course enrollment.
 */
function course_signup_get_signup_from_enrollment($enrollment) {
  $signup = db_query("SELECT * FROM {signup_log} WHERE nid = :nid AND uid = :uid", array(
    ':nid' => $enrollment->nid,
    ':uid' => $enrollment->uid,
  ));
  return $signup
    ->fetch();
}

/**
 * Implements hook_action_info().
 */
function course_signup_action_info() {
  $actions = array();
  $actions['course_signup_mark_attended_action'] = array(
    'type' => 'course_enrollment',
    'label' => t('Mark user attended'),
    'configurable' => FALSE,
    'vbo_configurable' => FALSE,
  );
  $actions['course_signup_mark_not_attended_action'] = array(
    'type' => 'course_enrollment',
    'label' => t('Mark user not attended'),
    'configurable' => FALSE,
    'vbo_configurable' => FALSE,
  );
  return $actions;
}

/**
 * Action to mark a signup attended from an enrollment.
 */
function course_signup_mark_attended_action(&$enrollment, $context) {
  if ($signup = course_signup_get_signup_from_enrollment($enrollment)) {
    signup_mark_attended_action($signup);
  }
}

/**
 * Action to mark a signup not attended from an enrollment.
 */
function course_signup_mark_not_attended_action(&$enrollment, $context) {
  if ($signup = course_signup_get_signup_from_enrollment($enrollment)) {
    signup_mark_not_attended_action($signup);
  }
}

/**
 * Implements hook_form_alter().
 */
function course_signup_form_alter(&$form, &$form_state, $form_id) {
  if (in_array($form_id, array(
    'signup_form',
  ))) {
    $node = node_load(arg(1));
    if (course_node_is_course($node)) {
      $form['#access'] = FALSE;
    }
  }
}

/**
 * Implements hook_signup_suppress().
 */
function course_signup_signup_suppress($node) {
  if (course_node_is_course($node)) {
    return TRUE;
  }
}

Functions

Name	Description
course_signup_action_info	Implements hook_action_info().
course_signup_add_to_cart	Implements hook_add_to_cart().
course_signup_admin	Signup course admin form.
course_signup_course_access	Implements hook_course_access().
course_signup_course_enrollment_delete	Implements hook_course_unenroll().
course_signup_course_enrollment_insert	Implements hook_course_enroll().
course_signup_course_handlers	Implements hook_course_handlers().
course_signup_form_alter	Implements hook_form_alter().
course_signup_form_uc_signup_attendees_form_alter	Implements hook_form_FORMID_alter().
course_signup_get_signup_from_enrollment	Get a signup from a course enrollment.
course_signup_init	Implements hook_init().
course_signup_mark_attended_action	Action to mark a signup attended from an enrollment.
course_signup_mark_not_attended_action	Action to mark a signup not attended from an enrollment.
course_signup_menu	Implements hook_menu().
course_signup_migrate_enrollments	Create a signup for every enrollment.
course_signup_quick_register	Do a quick registration.
course_signup_signup_cancel	Implements hook_signup_cancel().
course_signup_signup_delete	Implements hook_signup_delete().
course_signup_signup_enroll	Helper signup course enroll criteria function for insert & update.
course_signup_signup_insert	Implements hook_signup_insert().
course_signup_signup_suppress	Implements hook_signup_suppress().
course_signup_signup_update	Implements hook_signup_update().
course_signup_views_api	Implements hook_views_api().
course_signup_watchdog	Track attendance.