function opigno_quiz_app_get_next_lesson_from_course in Opigno Quiz App 7

Returns the next lesson NID for a course.

Return value

int|null The next lesson or NULL if no more lesson

1 call to opigno_quiz_app_get_next_lesson_from_course()

theme_opigno_quiz_take_summary in ./opigno_quiz_app.module

File

./opigno_quiz_app.module, line 2143

Module file. Defines module hooks.

Code

function opigno_quiz_app_get_next_lesson_from_course($course_nid, $current_lesson_nid) {

  // From the current course, get the next lesson.
  // Get all the lessons from the course. If no lesson, return NULL.
  $lessons = opigno_quiz_app_course_lessons($course_nid);
  if (empty($lessons[$course_nid])) {
    return NULL;
  }

  // Loop through all lessons. If we arrive to the current lesson, do a
  //   loop more and return the next lesson NID.
  //   If there is no more loop, it means there is no more lesson. Return NULL.
  $return_next_lesson = false;
  foreach ($lessons[$course_nid] as $lesson_nid => $lesson_vid) {
    if ($return_next_lesson) {
      return $lesson_nid;
    }
    if ($lesson_nid == $current_lesson_nid) {
      $return_next_lesson = true;
    }
  }

  // If no more lesson in this course, return NULL
  return NULL;
}