course)) {
error("Course is misconfigured");
}
if (! $lesson = get_record("lesson", "id", $cm->instance)) {
error("Course module is incorrect");
}
require_login($course->id);
add_to_log($course->id, "lesson", "view", "view.php?id=$cm->id", "$lesson->id");
/// Print the page header
if ($course->category) {
$navigation = "id\">$course->shortname ->";
}
$strlessons = get_string("modulenameplural", "lesson");
$strlesson = get_string("modulename", "lesson");
print_header("$course->shortname: $lesson->name", "$course->fullname",
"$navigation id>$strlessons -> id\">$lesson->name",
"", "", true, update_module_button($cm->id, $course->id, $strlesson),
navmenu($course, $cm));
// set up some general variables
$usehtmleditor = can_use_html_editor();
$path = "$CFG->wwwroot/course";
if (empty($THEME->custompix)) {
$pixpath = "$path/../pix";
} else {
$pixpath = "$path/../theme/$CFG->theme/pix";
}
if (empty($action)) {
if (isteacher($course->id)) {
$action = 'teacherview';
} else {
$action = 'navigation';
}
}
/************** navigation **************************************/
if ($action == 'navigation') {
// display individual pages and their sets of answers
// if pageid is EOL then the end of the lesson has been reached
print_heading($lesson->name);
if (empty($_GET['pageid'])) {
// if no pageid given see if the lesson has been started
if ($grades = get_records_select("lesson_grades", "lessonid = $lesson->id AND userid = $USER->id",
"grade DESC")) {
$retries = count($grades);
} else {
$retries = 0;
}
if ($retries) {
print_heading(get_string("attempt", "lesson", $retries + 1));
}
// if there are any questions have been answered correctly in this attempt
if ($attempts = get_records_select("lesson_attempts",
"lessonid = $lesson->id AND userid = $USER->id AND retry = $retries AND
correct = 1", "timeseen DESC")) {
// get the first page
if (!$firstpageid = get_field("lesson_pages", "id", "lessonid", $lesson->id,
"prevpageid", 0)) {
error("Navigation: first page not found");
}
foreach ($attempts as $attempt) {
$jumpto = get_field("lesson_answers", "jumpto", "id", $attempt->answerid);
// convert the jumpto to a proper page id
if ($jumpto == 0) { // unlikely value!
$lastpageseen = $attempt->pageid;
} elseif ($jumpto == NEXTPAGE) {
if (!$lastpageseen = get_field("lesson_pages", "nextpageid", "id",
$attempt->pageid)) {
// no nextpage go to end of lesson
$lastpageseen = EOL;
}
} else {
$lastpageseen = $jumpto;
}
break; // only look at the latest correct attempt
}
if ($lastpageseen != $firstpageid) {
notice_yesno(get_string("youhaveseen","lesson"),
"view.php?id=$cm->id&action=navigation&pageid=$lastpageseen",
"view.php?id=$cm->id&action=navigation&pageid=$firstpageid");
print_footer($course);
exit();
}
}
if ($grades) {
foreach ($grades as $grade) {
$bestgrade = $grade->grade;
break;
}
if (!$lesson->retake) {
redirect("../../course/view.php?id=$course->id", get_string("alreadytaken", "lesson"));
// allow student to retake course even if they have the maximum grade
// } elseif ($bestgrade == 100) {
// redirect("../../course/view.php?id=$course->id", get_string("maximumgradeachieved",
// "lesson"));
}
}
// start at the first page
if (!$pageid = get_field("lesson_pages", "id", "lessonid", $lesson->id, "prevpageid", 0)) {
error("Navigation: first page not found");
}
} else {
$pageid = $_GET['pageid'];
}
if ($pageid != EOL) {
if (!$page = get_record("lesson_pages", "id", $pageid)) {
error("Navigation: the page record not found");
}
echo "\n";
print_heading($page->title);
print_simple_box(format_text($page->contents), 'center');
echo "
\n";
if ($answers = get_records("lesson_answers", "pageid", $page->id)) {
shuffle($answers);
echo "\n";
} else {
// a page without answers - find the next (logical) page
if (!$newpageid = get_field("lesson_pages", "nextpageid", "id", $pageid)) {
// this is the last page - flag end of lesson
$newpageid = EOL;
}
print_continue("view.php?id=$cm->id&action=navigation&pageid=$newpageid");
}
echo " |
\n";
} else {
// end of lesson reached work out grade
print_heading(get_string("congratulations", "lesson"));
print_simple_box_start("center");
$ntries = count_records("lesson_grades", "lessonid", $lesson->id, "userid", $USER->id);
if (isstudent($course->id)) {
$ncorrect = count_records_select("lesson_attempts", "lessonid = $lesson->id AND
userid = $USER->id AND retry = $ntries AND correct = 1");
$nviewed = count_records("lesson_attempts", "lessonid", $lesson->id, "userid", $USER->id,
"retry", $ntries);
if ($nviewed) {
$thegrade = intval(100 * $ncorrect / $nviewed);
} else {
$thegrade = 0;
}
echo "".get_string("numberofpagesviewed", "lesson", $nviewed)."
\n";
echo "".get_string("numberofcorrectanswers", "lesson", $ncorrect).
"
\n";
echo "".get_string("gradeis", "lesson",
number_format($thegrade * $lesson->grade / 100, 1)).
" (".get_string("outof", "lesson", $lesson->grade).")
\n";
$grade->lessonid = $lesson->id;
$grade->userid = $USER->id;
$grade->grade = $thegrade;
$grade->completed = time();
if (!$newgradeid = insert_record("lesson_grades", $grade)) {
error("Navigation: grade not inserted");
}
} else {
// display for teacher
echo "".get_string("displayofgrade", "lesson")."
\n";
}
print_simple_box_end();
print_continue("../../course/view.php?id=$course->id");
}
}
/*******************teacher view **************************************/
elseif ($action == 'teacherview') {
print_heading_with_help($lesson->name, "overview", "lesson");
// get number of pages
if ($page = get_record_select("lesson_pages", "lessonid = $lesson->id AND prevpageid = 0")) {
$npages = 1;
while (true) {
if ($page->nextpageid) {
if (!$page = get_record("lesson_pages", "id", $page->nextpageid)) {
error("Teacher view: Next page not found!");
}
} else {
// last page reached
break;
}
$npages++;
}
}
if (!$page = get_record_select("lesson_pages", "lessonid = $lesson->id AND prevpageid = 0")) {
// if there are no pages give teacher a blank proforma
?>
\n";
echo "| id&action=addpage&pageid=0\">".
get_string("addpagehere", "lesson")." |
\n";
while (true) {
echo "cellheading2\" colspan=\"2\">$page->title \n";
if ($npages > 1) {
echo "id&action=move&pageid=$page->id\">\n".
"![](\"$pixpath/t/move.gif\") \n";
}
echo "id&action=editpage&pageid=$page->id\">\n".
"![](\"$pixpath/t/edit.gif\") \n".
"id&action=confirmdelete&pageid=$page->id\">\n".
"![](\"$pixpath/t/delete.gif\") ".
" | \n";
echo "| \n";
print_simple_box(format_text($page->contents), "center");
echo " | \n";
if ($answers = get_records("lesson_answers", "pageid", $page->id, "id")) {
$i = 1;
foreach ($answers as $answer) {
echo "| cellheading2\" colspan=\"2\"> | \n";
echo "| \n";
if (lesson_iscorrect($page->id, $answer->jumpto)) {
// underline correct answers
echo "".get_string("answer", "lesson")." $i: \n";
} else {
echo "".get_string("answer", "lesson")." $i: \n";
}
echo " | \n";
echo format_text($answer->answer);
echo " | \n";
echo "| ".get_string("response", "lesson")." $i: \n";
echo " | \n";
echo format_text($answer->response);
echo " | \n";
if ($answer->jumpto == 0) {
$jumptitle = get_string("thispage", "lesson");
} elseif ($answer->jumpto == NEXTPAGE) {
$jumptitle = get_string("nextpage", "lesson");
} elseif ($answer->jumpto == EOL) {
$jumptitle = get_string("endoflesson", "lesson");
} else {
if (!$jumptitle = get_field("lesson_pages", "title", "id", $answer->jumpto)) {
$jumptitle = "".get_string("notdefined", "lesson")."";
}
}
echo "| ".get_string("jumpto", "lesson").": \n";
echo " | \n";
echo "$jumptitle | \n";
$i++;
}
// print_simple_box_end();
}
echo "
|
| id&action=addpage&pageid=$page->id\">".
get_string("addpagehere", "lesson")." |
| \n";
if ($page->nextpageid) {
if (!$page = get_record("lesson_pages", "id", $page->nextpageid)) {
error("Teacher view: Next page not found!");
}
} else {
// last page reached
break;
}
}
echo " |
\n";
print_heading("id&action=navigation\">".get_string("checknavigation",
"lesson")."\n");
}
}
/*************** no man's land **************************************/
else {
error("Fatal Error: Unknown Action: ".$action."\n");
}
/// Finish the page
print_footer($course);
?>