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62eda6ea18
NEW: Display Left Menu IF. The left menu will only display if the student has a grade better than the one set in the lesson settings. This is nice to allow only students who are reviewing the lesson to have access to the left menu. BUG FIX: In Windows IE, the content was being aligned center. Now, the content is explicitly aligned to left as default. BUG FIX: High Scores variable was not spelled correctly at the End of Lesson. ADDED: Div tags around branch tables. This will allow users to choose to display them or not or move them around CHANGED: converted more of the links to the stylized button. Also, removed a lot of forms and javascript and replaced it with links with the variables in the href. CHANGED: the slide show styles have been moved to the style sheet. CHANGED: removed the CDC comments Other minor changes have been made to the code as well.
474 lines
17 KiB
PHP
474 lines
17 KiB
PHP
<?PHP // $Id$
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// modified by mnielsen
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/// Update: The lib.php now contains only the functions that are
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/// used outside of the lesson module. All functions (I hope) that are only local
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/// are now in locallib.php.
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/// Library of functions and constants for module lesson
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define("LESSON_MAX_EVENT_LENGTH", "432000"); // 5 days maximum
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/// (replace lesson with the name of your module and delete this line)
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/*******************************************************************/
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function lesson_add_instance($lesson) {
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/// Given an object containing all the necessary data,
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/// (defined by the form in mod.html) this function
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/// will create a new instance and return the id number
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/// of the new instance.
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global $SESSION;
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$lesson->timemodified = time();
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$lesson->available = make_timestamp($lesson->availableyear,
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$lesson->availablemonth, $lesson->availableday, $lesson->availablehour,
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$lesson->availableminute);
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$lesson->deadline = make_timestamp($lesson->deadlineyear,
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$lesson->deadlinemonth, $lesson->deadlineday, $lesson->deadlinehour,
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$lesson->deadlineminute);
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if(empty($lesson->timespent) or !is_numeric($lesson->timespent) or $lesson->timespent < 0) {
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$lesson->timespent = 0;
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}
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if(!isset($lesson->completed)) {
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$lesson->completed = 0;
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}
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if(empty($lesson->gradebetterthan) or !is_numeric($lesson->timespent) or $lesson->gradebetterthan < 0) {
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$lesson->gradebetterthan = 0;
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} else if ($lesson->gradebetterthan > 100) {
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$lesson->gradebetterthan = 100;
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}
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// conditions for dependency
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$conditions = new stdClass;
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$conditions->timespent = $lesson->timespent;
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$conditions->completed = $lesson->completed;
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$conditions->gradebetterthan = $lesson->gradebetterthan;
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$lesson->conditions = addslashes(serialize($conditions));
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unset($lesson->timespent);
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unset($lesson->completed);
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unset($lesson->gradebetterthan);
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if (!empty($lesson->password)) {
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$lesson->password = md5($lesson->password);
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} else {
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unset($lesson->password);
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}
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if (!$lesson->id = insert_record("lesson", $lesson)) {
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return false; // bad
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}
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if ($lesson->lessondefault) {
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$lessondefault = $lesson;
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unset($lessondefault->lessondefault);
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unset($lessondefault->name);
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unset($lessondefault->timemodified);
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unset($lessondefault->available);
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unset($lessondefault->deadline);
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if ($lessondefault->id = get_field("lesson_default", "id", "course", $lessondefault->course)) {
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update_record("lesson_default", $lessondefault);
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} else {
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insert_record("lesson_default", $lessondefault);
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}
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} else {
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unset($lesson->lessondefault);
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}
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// got this code from quiz, thanks quiz!!!
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delete_records('event', 'modulename', 'lesson', 'instance', $lesson->id); // Just in case
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$event = new stdClass;
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$event->name = $lesson->name;
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$event->description = $lesson->name;
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$event->courseid = $lesson->course;
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$event->groupid = 0;
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$event->userid = 0;
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$event->modulename = 'lesson';
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$event->instance = $lesson->id;
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$event->eventtype = 'open';
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$event->timestart = $lesson->available;
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$event->visible = instance_is_visible('lesson', $lesson);
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$event->timeduration = ($lesson->deadline - $lesson->available);
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if ($event->timeduration > LESSON_MAX_EVENT_LENGTH) { /// Long durations create two events
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$event2 = $event;
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$event->name .= ' ('.get_string('lessonopens', 'lesson').')';
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$event->timeduration = 0;
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$event2->timestart = $lesson->deadline;
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$event2->eventtype = 'close';
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$event2->timeduration = 0;
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$event2->name .= ' ('.get_string('lessoncloses', 'lesson').')';
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add_event($event2);
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}
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add_event($event);
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return $lesson->id;
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}
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/*******************************************************************/
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function lesson_update_instance($lesson) {
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/// Given an object containing all the necessary data,
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/// (defined by the form in mod.html) this function
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/// will update an existing instance with new data.
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$lesson->timemodified = time();
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$lesson->available = make_timestamp($lesson->availableyear,
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$lesson->availablemonth, $lesson->availableday, $lesson->availablehour,
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$lesson->availableminute);
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$lesson->deadline = make_timestamp($lesson->deadlineyear,
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$lesson->deadlinemonth, $lesson->deadlineday, $lesson->deadlinehour,
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$lesson->deadlineminute);
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$lesson->id = $lesson->instance;
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if(empty($lesson->timespent) or !is_numeric($lesson->timespent) or $lesson->timespent < 0) {
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$lesson->timespent = 0;
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}
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if(!isset($lesson->completed)) {
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$lesson->completed = 0;
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}
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if(empty($lesson->gradebetterthan) or !is_numeric($lesson->timespent) or $lesson->gradebetterthan < 0) {
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$lesson->gradebetterthan = 0;
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} else if ($lesson->gradebetterthan > 100) {
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$lesson->gradebetterthan = 100;
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}
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// conditions for dependency
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$conditions = new stdClass;
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$conditions->timespent = $lesson->timespent;
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$conditions->completed = $lesson->completed;
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$conditions->gradebetterthan = $lesson->gradebetterthan;
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$lesson->conditions = addslashes(serialize($conditions));
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unset($lesson->timespent);
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unset($lesson->completed);
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unset($lesson->gradebetterthan);
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if (!empty($lesson->password)) {
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$lesson->password = md5($lesson->password);
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} else {
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unset($lesson->password);
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}
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if ($lesson->lessondefault) {
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$lessondefault = $lesson;
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unset($lessondefault->lessondefault);
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unset($lessondefault->name);
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unset($lessondefault->timemodified);
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unset($lessondefault->available);
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unset($lessondefault->deadline);
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if ($lessondefault->id = get_field("lesson_default", "id", "course", $lessondefault->course)) {
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update_record("lesson_default", $lessondefault);
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} else {
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insert_record("lesson_default", $lessondefault);
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}
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} else {
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unset($lesson->lessondefault);
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}
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// update the calendar events (credit goes to quiz module)
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if ($events = get_records_select('event', "modulename = 'lesson' and instance = '$lesson->id'")) {
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foreach($events as $event) {
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delete_event($event->id);
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}
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}
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$event = new stdClass;
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$event->name = $lesson->name;
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$event->description = $lesson->name;
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$event->courseid = $lesson->course;
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$event->groupid = 0;
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$event->userid = 0;
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$event->modulename = 'lesson';
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$event->instance = $lesson->id;
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$event->eventtype = 'open';
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$event->timestart = $lesson->available;
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$event->visible = instance_is_visible('lesson', $lesson);
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$event->timeduration = ($lesson->deadline - $lesson->available);
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if ($event->timeduration > LESSON_MAX_EVENT_LENGTH) { /// Long durations create two events
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$event2 = $event;
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$event->name .= ' ('.get_string('lessonopens', 'lesson').')';
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$event->timeduration = 0;
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$event2->timestart = $lesson->deadline;
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$event2->eventtype = 'close';
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$event2->timeduration = 0;
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$event2->name .= ' ('.get_string('lessoncloses', 'lesson').')';
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add_event($event2);
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}
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add_event($event);
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if (!empty($lesson->deleteattempts)) {
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$subject = "Delete User Attempts";
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$message = "";
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if ($userid = get_field("user", "id", "username", $lesson->deleteattempts)) {
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if (delete_records("lesson_attempts", "lessonid", $lesson->id, "userid", $userid)) {
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// email good
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$message .= "Successfully deleted attempts from \"".format_string($lesson->name)."\" lesson!<br />";
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} else {
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// email couldnt delete
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$message .= "Failed to delete attempts from \"".format_string($lesson->name)."\" lesson!<br />";
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}
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if (delete_records("lesson_grades", "lessonid", $lesson->id, "userid", $userid)) {
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// email good
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$message .= "Successfully deleted grades from \"".format_string($lesson->name)."\" lesson!<br />";
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} else {
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// email couldnt delete
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$message .= "Failed to delete grades from \"".format_string($lesson->name)."\" lesson!<br />";
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}
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if (delete_records("lesson_timer", "lessonid", $lesson->id, "userid", $userid)) {
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// email good
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$message .= "Successfully deleted time records from \"".format_string($lesson->name)."\" lesson!<br />";
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} else {
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// email couldnt delete
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$message .= "Failed to delete time records from \"".format_string($lesson->name)."\" lesson!<br />";
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}
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} else {
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// email couldnt find user
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$message .= "Could not find user in database.<br />";
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}
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$message .= "<br /> User ID used: $lesson->deleteattempts <br />";
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$txt = format_text_email($message, FORMAT_HTML);
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if ($currentuser = get_record("user", "id", $lesson->deleteattemptsid)) {
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email_to_user($currentuser, $currentuser, $subject, $txt, $message);
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}
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// unset lessondefault
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}
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unset($lesson->deleteattempts);
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unset($lesson->deleteattemptsid);
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return update_record("lesson", $lesson);
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}
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/*******************************************************************/
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function lesson_delete_instance($id) {
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/// Given an ID of an instance of this module,
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/// this function will permanently delete the instance
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/// and any data that depends on it.
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if (! $lesson = get_record("lesson", "id", "$id")) {
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return false;
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}
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$result = true;
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if (! delete_records("lesson", "id", "$lesson->id")) {
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$result = false;
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}
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if (! delete_records("lesson_pages", "lessonid", "$lesson->id")) {
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$result = false;
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}
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if (! delete_records("lesson_answers", "lessonid", "$lesson->id")) {
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$result = false;
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}
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if (! delete_records("lesson_attempts", "lessonid", "$lesson->id")) {
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$result = false;
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}
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if (! delete_records("lesson_grades", "lessonid", "$lesson->id")) {
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$result = false;
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}
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if (! delete_records("lesson_timer", "lessonid", "$lesson->id")) {
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$result = false;
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}
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if (! delete_records("lesson_branch", "lessonid", "$lesson->id")) {
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$result = false;
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}
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if (! delete_records("lesson_high_scores", "lessonid", "$lesson->id")) {
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$result = false;
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}
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if ($events = get_records_select('event', "modulename = 'lesson' and instance = '$lesson->id'")) {
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foreach($events as $event) {
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delete_event($event->id);
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}
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}
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return $result;
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}
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/*******************************************************************/
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function lesson_user_outline($course, $user, $mod, $lesson) {
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/// Return a small object with summary information about what a
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/// user has done with a given particular instance of this module
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/// Used for user activity reports.
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/// $return->time = the time they did it
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/// $return->info = a short text description
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if ($grades = get_records_select("lesson_grades", "lessonid = $lesson->id AND userid = $user->id",
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"grade DESC")) {
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foreach ($grades as $grade) {
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$max_grade = number_format($grade->grade * $lesson->grade / 100.0, 1);
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break;
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}
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$return->time = $grade->completed;
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if ($lesson->retake) {
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$return->info = get_string("gradeis", "lesson", $max_grade)." (".
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get_string("attempt", "lesson", count($grades)).")";
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} else {
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$return->info = get_string("gradeis", "lesson", $max_grade);
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}
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} else {
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$return->info = get_string("no")." ".get_string("attempts", "lesson");
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}
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return $return;
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}
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/*******************************************************************/
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function lesson_user_complete($course, $user, $mod, $lesson) {
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/// Print a detailed representation of what a user has done with
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/// a given particular instance of this module, for user activity reports.
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if ($attempts = get_records_select("lesson_attempts", "lessonid = $lesson->id AND userid = $user->id",
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"retry, timeseen")) {
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print_simple_box_start();
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$table->head = array (get_string("attempt", "lesson"), get_string("numberofpagesviewed", "lesson"),
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get_string("numberofcorrectanswers", "lesson"), get_string("time"));
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$table->width = "100%";
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$table->align = array ("center", "center", "center", "center");
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$table->size = array ("*", "*", "*", "*");
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$table->cellpadding = 2;
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$table->cellspacing = 0;
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$retry = 0;
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$npages = 0;
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$ncorrect = 0;
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foreach ($attempts as $attempt) {
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if ($attempt->retry == $retry) {
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$npages++;
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if ($attempt->correct) {
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$ncorrect++;
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}
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$timeseen = $attempt->timeseen;
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} else {
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$table->data[] = array($retry + 1, $npages, $ncorrect, userdate($timeseen));
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$retry++;
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$npages = 1;
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if ($attempt->correct) {
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$ncorrect = 1;
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} else {
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$ncorrect = 0;
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}
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}
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}
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if ($npages) {
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$table->data[] = array($retry + 1, $npages, $ncorrect, userdate($timeseen));
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}
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print_table($table);
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print_simple_box_end();
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// also print grade summary
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if ($grades = get_records_select("lesson_grades", "lessonid = $lesson->id AND userid = $user->id",
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"grade DESC")) {
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foreach ($grades as $grade) {
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$max_grade = number_format($grade->grade * $lesson->grade / 100.0, 1);
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break;
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}
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if ($lesson->retake) {
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echo "<p>".get_string("gradeis", "lesson", $max_grade)." (".
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get_string("attempts", "lesson").": ".count($grades).")</p>";
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} else {
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echo "<p>".get_string("gradeis", "lesson", $max_grade)."</p>";
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}
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}
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} else {
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echo get_string("no")." ".get_string("attempts", "lesson");
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}
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return true;
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}
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/*******************************************************************/
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function lesson_print_recent_activity($course, $isteacher, $timestart) {
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/// Given a course and a time, this module should find recent activity
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/// that has occurred in lesson activities and print it out.
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/// Return true if there was output, or false is there was none.
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global $CFG;
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return false; // True if anything was printed, otherwise false
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}
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/*******************************************************************/
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function lesson_cron () {
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/// Function to be run periodically according to the moodle cron
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/// This function searches for things that need to be done, such
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/// as sending out mail, toggling flags etc ...
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global $CFG;
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return true;
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}
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/*******************************************************************/
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function lesson_grades($lessonid) {
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/// Must return an array of grades for a given instance of this module,
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/// indexed by user. It also returns a maximum allowed grade.
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global $CFG;
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if (!$lesson = get_record("lesson", "id", $lessonid)) {
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return NULL;
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}
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if ($lesson->usemaxgrade) {
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$grades = get_records_sql_menu("SELECT userid,MAX(grade) FROM {$CFG->prefix}lesson_grades WHERE
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lessonid = $lessonid GROUP BY userid");
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} else {
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$grades = get_records_sql_menu("SELECT userid,AVG(grade) FROM {$CFG->prefix}lesson_grades WHERE
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lessonid = $lessonid GROUP BY userid");
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}
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// convert grades from percentages and tidy the numbers
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if (!$lesson->practice) { // dont display practice lessons
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if ($grades) {
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foreach ($grades as $userid => $grade) {
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$return->grades[$userid] = number_format($grade * $lesson->grade / 100.0, 1);
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}
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}
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$return->maxgrade = $lesson->grade;
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return $return;
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} else {
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return NULL;
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}
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}
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/*******************************************************************/
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function lesson_get_participants($lessonid) {
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//Must return an array of user records (all data) who are participants
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//for a given instance of lesson. Must include every user involved
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//in the instance, independient of his role (student, teacher, admin...)
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global $CFG;
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//Get students
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$students = get_records_sql("SELECT DISTINCT u.id, u.id
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FROM {$CFG->prefix}user u,
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{$CFG->prefix}lesson_attempts a
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WHERE a.lessonid = '$lessonid' and
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u.id = a.userid");
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//Return students array (it contains an array of unique users)
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return ($students);
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}
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function lesson_get_view_actions() {
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return array('view','view all');
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}
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function lesson_get_post_actions() {
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return array('end','start');
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}
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?>
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