"user.php", "name" => get_lang("ToolUser"));
Display :: display_header($tool_name, "User");
api_display_tool_title($tool_name);
if (api_is_allowed_to_edit()) {
echo ''.get_lang("AddClassesToACourse").'
';
}
/* MAIN SECTION*/
if(api_is_allowed_to_edit()) {
if (isset ($_GET['unsubscribe'])) {
ClassManager::unsubscribe_from_course($_GET['class_id'],$_course['sysCode']);
Display::display_normal_message(get_lang('ClassesUnSubscribed'));
}
if (isset ($_POST['action'])) {
switch ($_POST['action']) {
case 'unsubscribe' :
if (is_array($_POST['class']))
{
foreach ($_POST['class'] as $index => $class_id)
{
ClassManager::unsubscribe_from_course($class_id,$_course['sysCode']);
}
Display::display_normal_message(get_lang('ClassesUnSubscribed'));
}
break;
}
}
}
/*
SHOW LIST OF CLASSES
*/
/**
* * Get the number of classes to display on the current page.
*/
function get_number_of_classes()
{
$class_table = Database :: get_main_table(TABLE_MAIN_CLASS);
$course_class_table = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
$sql = "SELECT c.id FROM $class_table c, $course_class_table cc WHERE cc.class_id = c.id AND cc.course_code ='".$_SESSION['_course']['id']."'";
if (isset ($_GET['keyword']))
{
$keyword = Database::escape_string(trim($_GET['keyword']));
$sql .= " AND (c.name LIKE '%".$keyword."%')";
}
$res = Database::query($sql);
$result = Database::num_rows($res);
return $result;
}
/**
* Get the classes to display on the current page.
*/
function get_class_data($from, $number_of_items, $column, $direction)
{
$class_table = Database :: get_main_table(TABLE_MAIN_CLASS);
$course_class_table = Database :: get_main_table(TABLE_MAIN_COURSE_CLASS);
$class_user_table = Database :: get_main_table(TABLE_MAIN_CLASS_USER);
$sql = "SELECT c.id AS col0, c.name AS col1, COUNT(cu.user_id) AS col2";
if (api_is_allowed_to_edit()) {
$sql .= " ,c.id AS col3";
}
// '(' and ')' in next query is necessary (see http://bugs.mysql.com/bug.php?id=19053)
$sql .= " FROM ($class_table c, $course_class_table cc)";
$sql .= " LEFT JOIN $class_user_table cu ON cu.class_id = c.id";
$sql .= " WHERE c.id = cc.class_id AND cc.course_code = '".$_SESSION['_course']['id']."'";
if (isset ($_GET['keyword']))
{
$keyword = Database::escape_string(trim($_GET['keyword']));
$sql .= " AND (c.name LIKE '%".$keyword."%')";
}
$sql .= " GROUP BY c.id, c.name ";
$sql .= " ORDER BY col$column $direction ";
$sql .= " LIMIT $from,$number_of_items";
$res = Database::query($sql);
$classes = array ();
while ($class = Database::fetch_row($res))
{
$classes[] = $class;
}
return $classes;
}
/**
* Build the reg-column of the table
* @param int $class_id The class id
* @return string Some HTML-code
*/
function reg_filter($class_id) {
global $charset;
$result = '
';
return $result;
}
// Build search-form
$form = new FormValidator('search_class', 'get','','', array('class' => 'well form-inline'),false);
$form->add_textfield('keyword', '', false);
$form->addElement('button', 'submit', get_lang('SearchButton'));
// Build table
$table = new SortableTable('user_class', 'get_number_of_classes', 'get_class_data', 1);
$parameters['keyword'] = $_GET['keyword'];
$table->set_additional_parameters($parameters);
$col = 0;
$table->set_header($col ++, '', false);
$table->set_header($col ++, get_lang('ClassName'));
$table->set_header($col ++, get_lang('NumberOfUsers'));
if (api_is_allowed_to_edit()) {
$table->set_header($col ++, '', false);
$table->set_column_filter($col -1, 'reg_filter');
$table->set_form_actions(array ('unsubscribe' => get_lang('Unreg')), 'class');
}
// Display form & table
echo '
';
$form->display();
echo '
';
$table->display();
Display :: display_footer();