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<?PHP // $Id: view.php,v 1.65.2.4 2005/01/22 09:05:49 martinlanghoff Exp $
// Display the course home page.
require_once('../config.php');
require_once('lib.php');
require_once($CFG->libdir.'/blocklib.php');
optional_variable($id);
optional_variable($name);
if (!$id and !$name) {
error("Must specify course id or short name");
}
if (!empty($_GET['name'])) {
if (! ($course = get_record("course", "shortname", $name)) ) {
error("That's an invalid short course name");
}
} else {
if (! ($course = get_record("course", "id", $id)) ) {
error("That's an invalid course id");
}
}
require_login($course->id);
require_once($CFG->dirroot.'/calendar/lib.php'); /// This is after login because it needs $USER
add_to_log($course->id, "course", "view", "view.php?id=$course->id", "$course->id");
$course->format = clean_param($course->format, PARAM_ALPHA);
if (!file_exists($CFG->dirroot.'/course/format/'.$course->format.'/format.php')) {
$course->format = 'weeks'; // Default format is weeks
}
// Doing this now so we can pass the results to block_action()
// and dodge the overhead of doing the same work twice.
$blocks = $course->blockinfo;
$delimpos = strpos($blocks, ':');
if($delimpos === false) {
// No ':' found, we have all left blocks
$leftblocks = explode(',', $blocks);
$rightblocks = array();
}
else if($delimpos === 0) {
// ':' at start of string, we have all right blocks
$blocks = substr($blocks, 1);
$leftblocks = array();
$rightblocks = explode(',', $blocks);
}
else {
// Both left and right blocks
$leftpart = substr($blocks, 0, $delimpos);
$rightpart = substr($blocks, $delimpos + 1);
$leftblocks = explode(',', $leftpart);
$rightblocks = explode(',', $rightpart);
}
if (!isset($USER->editing)) {
$USER->editing = false;
}
$editing = false;
if (isteacheredit($course->id)) {
if (isset($edit)) {
if ($edit == "on") {
$USER->editing = true;
} else if ($edit == "off") {
$USER->editing = false;
}
}
$editing = $USER->editing;
if (isset($hide) and confirm_sesskey()) {
set_section_visible($course->id, $hide, '0');
}
if (isset($show) and confirm_sesskey()) {
set_section_visible($course->id, $show, '1');
}
if (isset($_GET['blockaction']) and confirm_sesskey()) {
if (isset($_GET['blockid'])) {
block_action($course, $leftblocks, $rightblocks, strtolower($_GET['blockaction']), intval($_GET['blockid']));
}
}
// This has to happen after block_action() has possibly updated the two arrays
$allblocks = array_merge($leftblocks, $rightblocks);
$missingblocks = array();
$recblocks = get_records('blocks','visible','1');
// Note down which blocks are going to get displayed
blocks_used($allblocks, $recblocks);
if($editing && $recblocks) {
foreach($recblocks as $recblock) {
// If it's not hidden or displayed right now...
if(!in_array($recblock->id, $allblocks) && !in_array(-($recblock->id), $allblocks)) {
// And if it's applicable for display in this format...
$formats = block_method_result($recblock->name, 'applicable_formats');
if( isset($formats[$course->format]) ? $formats[$course->format] : !empty($formats['all'])) {
// Translation: if the course format is explicitly accepted/rejected, use
// that setting. Otherwise, fallback to the 'all' format. The empty() test
// uses the trick that empty() fails if 'all' is either !isset() or false.
// Add it to the missing blocks
$missingblocks[] = $recblock->id;
}
}
}
}
if (!empty($section)) {
if (!empty($move) and confirm_sesskey()) {
if (!move_section($course, $section, $move)) {
notify("An error occurred while moving a section");
}
}
}
} else {
$USER->editing = false;
// Note down which blocks are going to get displayed
$allblocks = array_merge($leftblocks, $rightblocks);
$recblocks = get_records('blocks','visible','1');
blocks_used($allblocks, $recblocks);
}
$SESSION->fromdiscussion = "$CFG->wwwroot/course/view.php?id=$course->id";
if ($course->id == SITEID) { // This course is not a real course.
redirect("$CFG->wwwroot/");
}
$strcourse = get_string("course");
$loggedinas = "<p class=\"logininfo\">".user_login_string($course, $USER)."</p>";
print_header("$strcourse: $course->fullname", "$course->fullname", "$course->shortname",
"", "", true, update_course_icon($course->id), $loggedinas);
get_all_mods($course->id, $mods, $modnames, $modnamesplural, $modnamesused);
if (! $sections = get_all_sections($course->id)) { // No sections found
// Double-check to be extra sure
if (! $section = get_record("course_sections", "course", $course->id, "section", 0)) {
$section->course = $course->id; // Create a default section.
$section->section = 0;
$section->visible = 1;
$section->id = insert_record("course_sections", $section);
}
if (! $sections = get_all_sections($course->id) ) { // Try again
error("Error finding or creating section structures for this course");
}
}
if (empty($course->modinfo)) { // Course cache was never made
rebuild_course_cache($course->id);
if (! $course = get_record("course", "id", $course->id) ) {
error("That's an invalid course id");
}
}
// If the block width cache is not set, set it
if(!isset($SESSION->blockcache->width->{$course->id}) || $editing) {
// This query might be optimized away if we 're in editing mode
if(!isset($recblocks)) {
$recblocks = get_records('blocks','visible','1');
}
$preferred_width_left = blocks_preferred_width($leftblocks, $recblocks);
$preferred_width_right = blocks_preferred_width($rightblocks, $recblocks);
// This may be kind of organizational overkill, granted...
// But is there any real need to simplify the structure?
$SESSION->blockcache->width->{$course->id}->left = $preferred_width_left;
$SESSION->blockcache->width->{$course->id}->right = $preferred_width_right;
}
else {
$preferred_width_left = $SESSION->blockcache->width->{$course->id}->left;
$preferred_width_right = $SESSION->blockcache->width->{$course->id}->right;
}
require("$CFG->dirroot/course/format/$course->format/format.php"); // Include the actual course format
print_footer(NULL, $course);
?>
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