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Adding the Lesson module to the main CVS. Nice job Ray!
Still needs PostgreSQL support and wider testing
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moodler
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18 changed files with 2370 additions and 0 deletions
342
mod/lesson/view.php
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342
mod/lesson/view.php
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<?PHP // $Id$
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/// This page prints a particular instance of lesson
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/// (Replace lesson with the name of your module)
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require_once("../../config.php");
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require_once("lib.php");
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require_variable($id); // Course Module ID, or
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if (! $cm = get_record("course_modules", "id", $id)) {
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error("Course Module ID was incorrect");
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}
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if (! $course = get_record("course", "id", $cm->course)) {
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error("Course is misconfigured");
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}
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if (! $lesson = get_record("lesson", "id", $cm->instance)) {
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error("Course module is incorrect");
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}
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require_login($course->id);
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add_to_log($course->id, "lesson", "view", "view.php?id=$cm->id", "$lesson->id");
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/// Print the page header
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if ($course->category) {
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$navigation = "<A HREF=\"../../course/view.php?id=$course->id\">$course->shortname</A> ->";
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}
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$strlessons = get_string("modulenameplural", "lesson");
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$strlesson = get_string("modulename", "lesson");
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print_header("$course->shortname: $lesson->name", "$course->fullname",
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"$navigation <A HREF=index.php?id=$course->id>$strlessons</A> -> <a href=\"view.php?id=$cm->id\">$lesson->name</a>",
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"", "", true, update_module_button($cm->id, $course->id, $strlesson),
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navmenu($course, $cm));
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// set up some general variables
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$usehtmleditor = can_use_html_editor();
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$path = "$CFG->wwwroot/course";
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if (empty($THEME->custompix)) {
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$pixpath = "$path/../pix";
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} else {
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$pixpath = "$path/../theme/$CFG->theme/pix";
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}
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if (empty($action)) {
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if (isteacher($course->id)) {
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$action = 'teacherview';
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} else {
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$action = 'navigation';
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}
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}
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/************** navigation **************************************/
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if ($action == 'navigation') {
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// display individual pages and their sets of answers
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// if pageid is EOL then the end of the lesson has been reached
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print_heading($lesson->name);
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if (empty($_GET['pageid'])) {
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// if no pageid given see if the lesson has been started
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if ($grades = get_records_select("lesson_grades", "lessonid = $lesson->id AND userid = $USER->id",
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"grade DESC")) {
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$retries = count($grades);
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} else {
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$retries = 0;
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}
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if ($retries) {
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print_heading(get_string("attempt", "lesson", $retries + 1));
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}
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// if there are any questions have been answered correctly in this attempt
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if ($attempts = get_records_select("lesson_attempts",
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"lessonid = $lesson->id AND userid = $USER->id AND retry = $retries AND
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correct = 1", "timeseen DESC")) {
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// get the first page
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if (!$firstpageid = get_field("lesson_pages", "id", "lessonid", $lesson->id,
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"prevpageid", 0)) {
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error("Navigation: first page not found");
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}
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foreach ($attempts as $attempt) {
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$jumpto = get_field("lesson_answers", "jumpto", "id", $attempt->answerid);
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// convert the jumpto to a proper page id
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if ($jumpto == 0) { // unlikely value!
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$lastpageseen = $attempt->pageid;
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} elseif ($jumpto == NEXTPAGE) {
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if (!$lastpageseen = get_field("lesson_pages", "nextpageid", "id",
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$attempt->pageid)) {
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// no nextpage go to end of lesson
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$lastpageseen = EOL;
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}
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} else {
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$lastpageseen = $jumpto;
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}
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break; // only look at the latest correct attempt
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}
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if ($lastpageseen != $firstpageid) {
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notice_yesno(get_string("youhaveseen","lesson"),
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"view.php?id=$cm->id&action=navigation&pageid=$lastpageseen",
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"view.php?id=$cm->id&action=navigation&pageid=$firstpageid");
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print_footer($course);
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exit();
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}
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}
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if ($grades) {
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foreach ($grades as $grade) {
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$bestgrade = $grade->grade;
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break;
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}
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if (!$lesson->retake) {
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redirect("../../course/view.php?id=$course->id", get_string("alreadytaken", "lesson"));
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// allow student to retake course even if they have the maximum grade
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// } elseif ($bestgrade == 100) {
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// redirect("../../course/view.php?id=$course->id", get_string("maximumgradeachieved",
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// "lesson"));
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}
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}
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// start at the first page
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if (!$pageid = get_field("lesson_pages", "id", "lessonid", $lesson->id, "prevpageid", 0)) {
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error("Navigation: first page not found");
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}
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} else {
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$pageid = $_GET['pageid'];
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}
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if ($pageid != EOL) {
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if (!$page = get_record("lesson_pages", "id", $pageid)) {
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error("Navigation: the page record not found");
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}
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echo "<table align=\"center\" width=\"80%\" border=\"0\"><tr><td>\n";
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print_heading($page->title);
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print_simple_box(format_text($page->contents), 'center');
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echo "<br />\n";
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if ($answers = get_records("lesson_answers", "pageid", $page->id)) {
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shuffle($answers);
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echo "<form name=\"pageform\" method =\"post\" action=\"lesson.php\">\n";
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echo "<input type=\"hidden\" name=\"id\" value=\"$cm->id\">\n";
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echo "<input type=\"hidden\" name=\"action\" value=\"continue\">\n";
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echo "<input type=\"hidden\" name=\"pageid\" value=\"$pageid\">\n";
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print_simple_box_start("center");
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foreach ($answers as $answer) {
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echo "<p><input type=\"radio\" name=\"answerid\" value=\"{$answer->id}\"> \n";
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$options->para = false; // no <p></p>
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echo format_text(trim($answer->answer), FORMAT_MOODLE, $options);
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echo "</p>\n";
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}
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print_simple_box_end();
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echo "<p align=\"center\"><input type=\"submit\" name=\"continue\" value=\"".
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get_string("pleasecheckoneanswer", "lesson")."\"></p>\n";
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echo "</form>\n";
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} else {
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// a page without answers - find the next (logical) page
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if (!$newpageid = get_field("lesson_pages", "nextpageid", "id", $pageid)) {
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// this is the last page - flag end of lesson
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$newpageid = EOL;
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}
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print_continue("view.php?id=$cm->id&action=navigation&pageid=$newpageid");
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}
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echo "</table>\n";
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} else {
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// end of lesson reached work out grade
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print_heading(get_string("congratulations", "lesson"));
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print_simple_box_start("center");
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$ntries = count_records("lesson_grades", "lessonid", $lesson->id, "userid", $USER->id);
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if (isstudent($course->id)) {
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$ncorrect = count_records_select("lesson_attempts", "lessonid = $lesson->id AND
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userid = $USER->id AND retry = $ntries AND correct = 1");
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$nviewed = count_records("lesson_attempts", "lessonid", $lesson->id, "userid", $USER->id,
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"retry", $ntries);
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if ($nviewed) {
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$thegrade = intval(100 * $ncorrect / $nviewed);
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} else {
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$thegrade = 0;
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}
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echo "<p align=\"center\">".get_string("numberofpagesviewed", "lesson", $nviewed)."</p>\n";
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echo "<p align=\"center\">".get_string("numberofcorrectanswers", "lesson", $ncorrect).
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"</p>\n";
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echo "<p align=\"center\">".get_string("gradeis", "lesson",
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number_format($thegrade * $lesson->grade / 100, 1)).
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" (".get_string("outof", "lesson", $lesson->grade).")</p>\n";
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$grade->lessonid = $lesson->id;
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$grade->userid = $USER->id;
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$grade->grade = $thegrade;
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$grade->completed = time();
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if (!$newgradeid = insert_record("lesson_grades", $grade)) {
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error("Navigation: grade not inserted");
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}
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} else {
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// display for teacher
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echo "<p align=\"center\">".get_string("displayofgrade", "lesson")."</p>\n";
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}
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print_simple_box_end();
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print_continue("../../course/view.php?id=$course->id");
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}
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}
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/*******************teacher view **************************************/
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elseif ($action == 'teacherview') {
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print_heading_with_help($lesson->name, "overview", "lesson");
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// get number of pages
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if ($page = get_record_select("lesson_pages", "lessonid = $lesson->id AND prevpageid = 0")) {
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$npages = 1;
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while (true) {
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if ($page->nextpageid) {
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if (!$page = get_record("lesson_pages", "id", $page->nextpageid)) {
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error("Teacher view: Next page not found!");
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}
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} else {
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// last page reached
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break;
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}
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$npages++;
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}
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}
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if (!$page = get_record_select("lesson_pages", "lessonid = $lesson->id AND prevpageid = 0")) {
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// if there are no pages give teacher a blank proforma
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?>
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<form name="form" method="post" action="lesson.php">
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<input type="hidden" name="id" value="<?PHP echo $cm->id ?>">
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<input type="hidden" name="action" value="insertpage">
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<input type="hidden" name="pageid" value="0">
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<center><table cellpadding=5 border=1>
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<tr><td align="center">
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<tr valign="top">
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<td><p><b><?php print_string("pagetitle", "lesson"); ?>:</b></p></td></tr>
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<tr><td><input type="text" name="title" size="80" maxsize="255" value=""></td></tr>
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<?PHP
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echo "<tr><td><b>";
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echo get_string("pagecontents", "lesson").":</b><br />\n";
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print_textarea($usehtmleditor, 25, 70, 630, 400, "contents");
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echo "</td></tr>\n";
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for ($i = 0; $i < $lesson->maxanswers; $i++) {
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$iplus1 = $i + 1;
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echo "<tr><td><b>".get_string("answer", "lesson")." $iplus1:</b><br />\n";
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print_textarea($usehtmleditor, 20, 70, 630, 100, "answer[$i]");
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echo "</td></tr>\n";
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echo "<tr><td><b>".get_string("response", "lesson")." $iplus1:</b><br />\n";
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print_textarea($usehtmleditor, 20, 70, 630, 100, "response[$i]");
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echo "</td></tr>\n";
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if ($i) {
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// answers 2,3,4... jump to this page
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echo "<input type=\"hidden\" name=\"jumpto[$i]\" value =\"0\">\n";
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} else {
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// answer 1 jumps to next page
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echo "<input type=\"hidden\" name=\"jumpto[$i]\" value =\"".NEXTPAGE."\">\n";
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}
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}
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use_html_editor();
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// close table and form
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?>
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</table><br />
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<input type="submit" value="<?php print_string("savepage", "lesson") ?>">
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<input type="submit" name="cancel" value="<?php print_string("cancel") ?>">
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</center>
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</form>
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<?PHP
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} else {
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// print the pages
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echo "<center><table cellpadding=\"5\" border=\"0\" width=\"80%\">\n";
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echo "<tr><td align=\"right\"><a href=\"lesson.php?id=$cm->id&action=addpage&pageid=0\"><small>".
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get_string("addpagehere", "lesson")."</small></a></td></tr><tr><td>\n";
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while (true) {
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echo "<table width=\"100%\" border=\"1\"><tr><td bgcolor=\"$THEME->cellheading2\" colspan=\"2\"><b>$page->title</b> \n";
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if ($npages > 1) {
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echo "<a title=\"".get_string("move")."\" href=\"lesson.php?id=$cm->id&action=move&pageid=$page->id\">\n".
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"<img src=\"$pixpath/t/move.gif\" hspace=\"2\" height=11 width=11 border=0></a>\n";
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}
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echo "<a title=\"".get_string("update")."\" href=\"lesson.php?id=$cm->id&action=editpage&pageid=$page->id\">\n".
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"<img src=\"$pixpath/t/edit.gif\" hspace=\"2\" height=11 width=11 border=0></a>\n".
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"<a title=\"".get_string("delete")."\" href=\"lesson.php?id=$cm->id&action=confirmdelete&pageid=$page->id\">\n".
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"<img src=\"$pixpath/t/delete.gif\" hspace=\"2\" height=11 width=11 border=0></a>".
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"</td></tr>\n";
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echo "<tr><td colspan=\"2\">\n";
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print_simple_box(format_text($page->contents), "center");
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echo "</td></tr>\n";
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if ($answers = get_records("lesson_answers", "pageid", $page->id, "id")) {
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$i = 1;
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foreach ($answers as $answer) {
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echo "<tr><td bgcolor=\"$THEME->cellheading2\" colspan=\"2\"> </td></tr>\n";
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echo "<tr><td align=\"right\" valign=\"top\" width=\"20%\">\n";
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if (lesson_iscorrect($page->id, $answer->jumpto)) {
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// underline correct answers
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echo "<b><u>".get_string("answer", "lesson")." $i:</u></b> \n";
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} else {
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echo "<b>".get_string("answer", "lesson")." $i:</b> \n";
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}
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echo "</td><td width=\"80%\">\n";
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echo format_text($answer->answer);
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echo "</td></tr>\n";
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echo "<tr><td align=\"right\" valign=\"top\"><b>".get_string("response", "lesson")." $i:</b> \n";
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echo "</td><td>\n";
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echo format_text($answer->response);
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echo "</td></tr>\n";
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if ($answer->jumpto == 0) {
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$jumptitle = get_string("thispage", "lesson");
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} elseif ($answer->jumpto == NEXTPAGE) {
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$jumptitle = get_string("nextpage", "lesson");
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} elseif ($answer->jumpto == EOL) {
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$jumptitle = get_string("endoflesson", "lesson");
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} else {
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if (!$jumptitle = get_field("lesson_pages", "title", "id", $answer->jumpto)) {
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$jumptitle = "<b>".get_string("notdefined", "lesson")."</b>";
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}
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}
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echo "<tr><td align=\"right\"><b>".get_string("jumpto", "lesson").": </b>\n";
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echo "</td><td>\n";
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echo "$jumptitle</td></tr>\n";
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$i++;
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}
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// print_simple_box_end();
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}
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echo "</td></tr></table></td></tr><tr><td align=\"right\"><a href=\"lesson.php?id=$cm->id&action=addpage&pageid=$page->id\"><small>".
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get_string("addpagehere", "lesson")."</small></a></td></tr><tr><td>\n";
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if ($page->nextpageid) {
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if (!$page = get_record("lesson_pages", "id", $page->nextpageid)) {
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error("Teacher view: Next page not found!");
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}
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} else {
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// last page reached
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break;
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}
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}
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echo "</table>\n";
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print_heading("<a href=\"view.php?id=$cm->id&action=navigation\">".get_string("checknavigation",
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"lesson")."</a>\n");
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}
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}
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/*************** no man's land **************************************/
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else {
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error("Fatal Error: Unknown Action: ".$action."\n");
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}
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/// Finish the page
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print_footer($course);
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?>
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