'Construct a URL to the page within the course.'

@property
def url(self):

    default_store = os.environ.get('DEFAULT_STORE', 'draft')
    course_key = CourseLocator(self.course_info['course_org'], self.course_info['course_num'], self.course_info['course_run'], deprecated=(default_store == 'draft'))
    url = '/'.join([BASE_URL, self.url_path, urllib.quote_plus(unicode(course_key))])
    return (url if (url[(-1)] is '/') else (url + '/'))
