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<?PHP // $Id$
/// This page prints a particular instance of lesson
/// (Replace lesson with the name of your module)
require_once("../../config.php");
require_once("lib.php");
require_variable($id); // Course Module ID
if (! $cm = get_record("course_modules", "id", $id)) {
error("Course Module ID was incorrect");
}
if (! $course = get_record("course", "id", $cm->course)) {
error("Course is misconfigured");
}
if (! $lesson = get_record("lesson", "id", $cm->instance)) {
error("Course module is incorrect");
}
require_login($course->id);
/// Print the page header
if ($course->category) {
$navigation = "<a href=\"../../course/view.php?id=$course->id\">$course->shortname</a> ->";
}
$strlessons = get_string("modulenameplural", "lesson");
$strlesson = get_string("modulename", "lesson");
print_header("$course->shortname: $lesson->name", "$course->fullname",
"$navigation <A HREF=index.php?id=$course->id>$strlessons</A> -> <a href=\"view.php?id=$cm->id\">$lesson->name</a>",
"", "", true, update_module_button($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($lesson->name);
if (empty($_POST['pageid'])) {
add_to_log($course->id, "lesson", "start", "view.php?id=$cm->id", "$lesson->id", $cm->id);
// if no pageid given see if the lesson has been started
if ($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 = $_POST['pageid'];
}
if ($pageid != EOL) {
add_to_log($course->id, "lesson", "view", "view.php?id=$cm->id&action=navigation&pageid=$pageid", "$pageid", $cm->id);
if (!$page = get_record("lesson_pages", "id", $pageid)) {
error("Navigation: the page record not found");
}
echo "<table align=\"center\" width=\"80%\" border=\"0\"><tr><td>\n";
print_heading($page->title);
print_simple_box(format_text($page->contents), 'center');
echo "<br />\n";
if ($answers = get_records("lesson_answers", "pageid", $page->id)) {
shuffle($answers);
echo "<form name=\"pageform\" method =\"post\" action=\"lesson.php\">\n";
echo "<input type=\"hidden\" name=\"id\" value=\"$cm->id\">\n";
echo "<input type=\"hidden\" name=\"action\" value=\"continue\">\n";
echo "<input type=\"hidden\" name=\"pageid\" value=\"$pageid\">\n";
print_simple_box_start("center");
echo '<table width="100%">';
foreach ($answers as $answer) {
echo "<tr><td><input type=\"radio\" name=\"answerid\" value=\"{$answer->id}\"></td>\n";
echo "<td>\n";
$options->para = false; // no <p></p>
echo format_text(trim($answer->answer), FORMAT_MOODLE, $options);
echo "</td></tr>\n";
}
echo '</table>';
print_simple_box_end();
echo "<p align=\"center\"><input type=\"submit\" name=\"continue\" value=\"".
get_string("pleasecheckoneanswer", "lesson")."\"></p>\n";
echo "</form>\n";
} else {
// a page without answers - find the next (logical) page
echo "<form name=\"pageform\" method =\"post\" action=\"view.php\">\n";
echo "<input type=\"hidden\" name=\"id\" value=\"$cm->id\">\n";
echo "<input type=\"hidden\" name=\"action\" value=\"navigation\">\n";
if (!$newpageid = get_field("lesson_pages", "nextpageid", "id", $pageid)) {
// this is the last page - flag end of lesson
$newpageid = EOL;
}
echo "<input type=\"hidden\" name=\"pageid\" value=\"$newpageid\">\n";
echo "<p align=\"center\"><input type=\"submit\" name=\"continue\" value=\"".
get_string("continue", "lesson")."\"></p>\n";
echo "</form>\n";
}
echo "</table>\n";
} else {
// end of lesson reached work out grade
add_to_log($course->id, "lesson", "end", "view.php?id=$cm->id", "$lesson->id", $cm->id);
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)) {
// do a sanity check on the user's path through the lesson
if ($attempts = get_records_select("lesson_attempts", "lessonid = $lesson->id AND
userid = $USER->id AND retry = $ntries", "timeseen ASC")) {
$check = true;
if (!$thispageid = get_field("lesson_pages", "id", "lessonid", $lesson->id,
"prevpageid", 0)) {
error("Navigation Check: first page not found");
}
foreach ($attempts as $attempt) {
// skip any page without answers
while (!$answers = get_records("lesson_answers", "pageid", $thispageid)) {
if (!$thispageid = get_field("lesson_pages", "nextpageid", "id", $thispageid)) {
error("Navigation Check: nextpageid not found");
}
}
if ($attempt->pageid != $thispageid) {
// something odd
// echo "<p>\$thispageid: $thispageid; \$attempt->pageid: $attempt->pageid</p>\n";
$check = false;
break;
}
if (!$answer = get_record("lesson_answers", "id", $attempt->answerid)) {
error("Navigation Check: answer not found");
}
if ($answer->jumpto) {
if ($answer->jumpto == NEXTPAGE) {
if (!$thispageid = get_field("lesson_pages", "nextpageid", "id",
$thispageid)) {
$thispageid = EOL; // end of foreach loop should have been reached
}
} else {
$thispageid = $answer->jumpto;
}
}
}
if ($check) {
$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 "<p align=\"center\">".get_string("numberofpagesviewed", "lesson", $nviewed).
"</p>\n";
echo "<p align=\"center\">".get_string("numberofcorrectanswers", "lesson", $ncorrect).
"</p>\n";
echo "<p align=\"center\">".get_string("gradeis", "lesson",
number_format($thegrade * $lesson->grade / 100, 1)).
" (".get_string("outof", "lesson", $lesson->grade).")</p>\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 {
print_string("sanitycheckfailed", "lesson");
delete_records("lesson_attempts", "lessonid", $lesson->id, "userid", $USER->id,
"retry", $ntries);
}
} else {
print_string("noattemptrecordsfound", "lesson");
}
} else {
// display for teacher
echo "<p align=\"center\">".get_string("displayofgrade", "lesson")."</p>\n";
}
print_simple_box_end();
print_continue("../../course/view.php?id=$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
?>
<form name="form" method="post" action="lesson.php">
<input type="hidden" name="id" value="<?PHP echo $cm->id ?>">
<input type="hidden" name="action" value="insertpage">
<input type="hidden" name="pageid" value="0">
<center><table cellpadding=5 border=1>
<tr><td align="center">
<tr valign="top">
<td><p><b><?php print_string("pagetitle", "lesson"); ?>:</b></p></td></tr>
<tr><td><input type="text" name="title" size="80" maxsize="255" value=""></td></tr>
<?PHP
echo "<tr><td><b>";
echo get_string("pagecontents", "lesson").":</b><br />\n";
print_textarea($usehtmleditor, 25, 70, 630, 400, "contents");
echo "</td></tr>\n";
for ($i = 0; $i < $lesson->maxanswers; $i++) {
$iplus1 = $i + 1;
echo "<tr><td><b>".get_string("answer", "lesson")." $iplus1:</b><br />\n";
print_textarea($usehtmleditor, 20, 70, 630, 100, "answer[$i]");
echo "</td></tr>\n";
echo "<tr><td><b>".get_string("response", "lesson")." $iplus1:</b><br />\n";
print_textarea($usehtmleditor, 20, 70, 630, 100, "response[$i]");
echo "</td></tr>\n";
if ($i) {
// answers 2,3,4... jump to this page
echo "<input type=\"hidden\" name=\"jumpto[$i]\" value =\"0\">\n";
} else {
// answer 1 jumps to next page
echo "<input type=\"hidden\" name=\"jumpto[$i]\" value =\"".NEXTPAGE."\">\n";
}
}
use_html_editor();
// close table and form
?>
</table><br />
<input type="submit" value="<?php print_string("savepage", "lesson") ?>">
<input type="submit" name="cancel" value="<?php print_string("cancel") ?>">
</center>
</form>
<?PHP
} else {
// print the pages
echo "<center><table cellpadding=\"5\" border=\"0\" width=\"80%\">\n";
if (isteacheredit($course->id)) {
echo "<tr><td align=\"right\"><a href=\"lesson.php?id=$cm->id&action=addpage&pageid=0\"><small>".
get_string("addpagehere", "lesson")."</small></a></td></tr>\n";
}
echo "<tr><td>\n";
while (true) {
echo "<table width=\"100%\" border=\"1\"><tr><td bgcolor=\"$THEME->cellheading2\" colspan=\"2\"><b>$page->title</b>&nbsp;&nbsp;\n";
if (isteacheredit($course->id)) {
if ($npages > 1) {
echo "<a title=\"".get_string("move")."\" href=\"lesson.php?id=$cm->id&action=move&pageid=$page->id\">\n".
"<img src=\"$pixpath/t/move.gif\" hspace=\"2\" height=11 width=11 border=0></a>\n";
}
echo "<a title=\"".get_string("update")."\" href=\"lesson.php?id=$cm->id&action=editpage&pageid=$page->id\">\n".
"<img src=\"$pixpath/t/edit.gif\" hspace=\"2\" height=11 width=11 border=0></a>\n".
"<a title=\"".get_string("delete")."\" href=\"lesson.php?id=$cm->id&action=confirmdelete&pageid=$page->id\">\n".
"<img src=\"$pixpath/t/delete.gif\" hspace=\"2\" height=11 width=11 border=0></a>\n";
}
echo "</td></tr>\n";
echo "<tr><td colspan=\"2\">\n";
print_simple_box(format_text($page->contents), "center");
echo "</td></tr>\n";
if ($answers = get_records("lesson_answers", "pageid", $page->id, "id")) {
$i = 1;
foreach ($answers as $answer) {
echo "<tr><td bgcolor=\"$THEME->cellheading2\" colspan=\"2\">&nbsp;</td></tr>\n";
echo "<tr><td align=\"right\" valign=\"top\" width=\"20%\">\n";
if (lesson_iscorrect($page->id, $answer->jumpto)) {
// underline correct answers
echo "<b><u>".get_string("answer", "lesson")." $i:</u></b> \n";
} else {
echo "<b>".get_string("answer", "lesson")." $i:</b> \n";
}
echo "</td><td width=\"80%\">\n";
echo format_text($answer->answer);
echo "</td></tr>\n";
echo "<tr><td align=\"right\" valign=\"top\"><b>".get_string("response", "lesson")." $i:</b> \n";
echo "</td><td>\n";
echo format_text($answer->response);
echo "</td></tr>\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)) {
$jumptitle = "<b>".get_string("notdefined", "lesson")."</b>";
}
}
echo "<tr><td align=\"right\"><b>".get_string("jumpto", "lesson").": </b>\n";
echo "</td><td>\n";
echo "$jumptitle</td></tr>\n";
$i++;
}
// print_simple_box_end();
}
echo "</td></tr></table></td></tr>\n";
if (isteacheredit($course->id)) {
echo "<tr><td align=\"right\"><a href=\"lesson.php?id=$cm->id&action=addpage&pageid=$page->id\"><small>".
get_string("addpagehere", "lesson")."</small></a></td></tr>\n";
}
echo "<tr><td>\n";
if ($page->nextpageid) {
if (!$page = get_record("lesson_pages", "id", $page->nextpageid)) {
error("Teacher view: Next page not found!");
}
} else {
// last page reached
break;
}
}
echo "</table>\n";
print_heading("<a href=\"view.php?id=$cm->id&action=navigation\">".get_string("checknavigation",
"lesson")."</a>\n");
}
}
/*************** no man's land **************************************/
else {
error("Fatal Error: Unknown Action: ".$action."\n");
}
/// Finish the page
print_footer($course);
?>
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