moodle/mod/forum/rate.php
2008-04-04 02:54:20 +00:00

104 lines
3.6 KiB
PHP

<?php // $Id$
// Collect ratings, store them, then return to where we came from
require_once('../../config.php');
require_once('lib.php');
$forumid = required_param('forumid', PARAM_INT); // The forum the rated posts are from
if (!$forum = get_record('forum', 'id', $forumid)) {
print_error("Course ID was incorrect");
}
if (!$course = get_record('course', 'id', $forum->course)) {
print_error("Course ID was incorrect");
}
if (!$cm = get_coursemodule_from_instance('forum', $forum->id)) {
print_error("Course Module ID was incorrect");
} else {
$forum->cmidnumber = $cm->id; //MDL-12961
}
require_login($course, false, $cm);
if (isguestuser()) {
print_error("Guests are not allowed to rate entries.");
}
if (!$forum->assessed) {
print_error("Rating of items not allowed!");
}
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
require_capability('mod/forum:rate', $context);
if ($data = data_submitted()) {
$discussionid = false;
foreach ((array)$data as $postid => $rating) {
if (!is_numeric($postid)) {
continue;
}
// following query validates the submitted postid too
$sql = "SELECT fp.*
FROM {$CFG->prefix}forum_posts fp, {$CFG->prefix}forum_discussions fd
WHERE fp.id = '$postid' AND fp.discussion = fd.id AND fd.forum = $forum->id";
if (!$post = get_record_sql($sql)) {
print_error("Incorrect postid - $postid");
}
$discussionid = $post->discussion;
if ($forum->assesstimestart and $forum->assesstimefinish) {
if ($post->created < $forum->assesstimestart or $post->created > $forum->assesstimefinish) {
// we can not rate this, ignore it - this should not happen anyway unless teacher changes setting
continue;
}
}
if ($rating == FORUM_UNSET_POST_RATING) {
delete_records('forum_ratings', 'post', $postid, 'userid', $USER->id);
forum_update_grades($forum, $post->userid);
} else if ($oldrating = get_record('forum_ratings', 'userid', $USER->id, 'post', $post->id)) {
if ($rating != $oldrating->rating) {
$oldrating->rating = $rating;
$oldrating->time = time();
if (! update_record('forum_ratings', $oldrating)) {
print_error("Could not update an old rating ($post->id = $rating)");
}
forum_update_grades($forum, $post->userid);
}
} else {
$newrating = new object();
$newrating->userid = $USER->id;
$newrating->time = time();
$newrating->post = $post->id;
$newrating->rating = $rating;
if (! insert_record('forum_ratings', $newrating)) {
print_error("Could not insert a new rating ($postid = $rating)");
}
forum_update_grades($forum, $post->userid);
}
}
if ($forum->type == 'single' or !$discussionid) {
redirect("$CFG->wwwroot/mod/forum/view.php?id=$cm->id", get_string('ratingssaved', 'forum'));
} else {
redirect("$CFG->wwwroot/mod/forum/discuss.php?d=$discussionid", get_string('ratingssaved', 'forum'));
}
} else {
print_error("This page was not accessed correctly");
}
?>