mirrored from git://git.moodle.org/moodle.git
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essay.php
373 lines (314 loc) · 17.6 KB
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essay.php
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<?php // $Id$
/**
* Provides the interface for grading essay questions
*
* @version $Id$
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
* @package lesson
**/
require_once('../../config.php');
require_once('locallib.php');
require_once('lib.php');
$id = required_param('id', PARAM_INT); // Course Module ID
$mode = optional_param('mode', 'display', PARAM_ALPHA);
list($cm, $course, $lesson) = lesson_get_basics($id);
require_login($course->id, false, $cm);
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
require_capability('mod/lesson:edit', $context);
/// Handle any preprocessing before header is printed - based on $mode
switch ($mode) {
case 'display': // Default view - get the necessary data
// Get lesson pages that are essay
if ($pages = get_records_select('lesson_pages', "lessonid = $lesson->id AND qtype = ".LESSON_ESSAY)) {
// Get only the attempts that are in response to essay questions
if ($essayattempts = get_records_select('lesson_attempts', 'pageid IN('.implode(',', array_keys($pages)).')')) {
// Get all the users who have taken this lesson, order by their last name
if (!empty($CFG->enablegroupings) && !empty($cm->groupingid)) {
$sql = "SELECT u.*
FROM {$CFG->prefix}user u
JOIN (
SELECT DISTINCT u.id
FROM {$CFG->prefix}lesson_attempts a
JOIN {$CFG->prefix}user u ON u.id = a.userid
JOIN {$CFG->prefix}groups_members gm ON gm.userid = u.id
JOIN {$CFG->prefix}groupings_groups gg ON gm.groupid = {$cm->groupingid}
WHERE a.lessonid = '$lesson->id') ui ON u.id = ui.id
ORDER BY u.lastname";
} else {
$sql = "SELECT u.*
FROM {$CFG->prefix}user u,
{$CFG->prefix}lesson_attempts a
WHERE a.lessonid = '$lesson->id' and
u.id = a.userid
ORDER BY u.lastname";
}
if (!$users = get_records_sql($sql)) {
$mode = 'none'; // not displaying anything
lesson_set_message(get_string('noonehasanswered', 'lesson'));
}
} else {
$mode = 'none'; // not displaying anything
lesson_set_message(get_string('noonehasanswered', 'lesson'));
}
} else {
$mode = 'none'; // not displaying anything
lesson_set_message(get_string('noessayquestionsfound', 'lesson'));
}
break;
case 'grade': // Grading form - get the necessary data
require_sesskey();
$attemptid = required_param('attemptid', PARAM_INT);
if (!$attempt = get_record('lesson_attempts', 'id', $attemptid)) {
error('Error: could not find attempt');
}
if (!$page = get_record('lesson_pages', 'id', $attempt->pageid)) {
error('Error: could not find lesson page');
}
if (!$user = get_record('user', 'id', $attempt->userid)) {
error('Error: could not find users');
}
if (!$answer = get_record('lesson_answers', 'lessonid', $lesson->id, 'pageid', $page->id)) {
error('Error: could not find answer');
}
break;
case 'update':
if (confirm_sesskey() and $form = data_submitted($CFG->wwwroot.'/mod/lesson/essay.php')) {
if (optional_param('cancel', 0)) {
redirect("$CFG->wwwroot/mod/lesson/essay.php?id=$cm->id");
}
$attemptid = required_param('attemptid', PARAM_INT);
if (!$attempt = get_record('lesson_attempts', 'id', $attemptid)) {
error('Error: could not find essay');
}
if (!$grades = get_records_select('lesson_grades', "lessonid = $lesson->id and userid = $attempt->userid", 'completed', '*', $attempt->retry, 1)) {
error('Error: could not find grades');
}
$essayinfo = new stdClass;
$essayinfo = unserialize($attempt->useranswer);
$essayinfo->graded = 1;
$essayinfo->score = clean_param($form->score, PARAM_INT);
$essayinfo->response = stripslashes_safe(clean_param($form->response, PARAM_RAW));
$essayinfo->sent = 0;
if (!$lesson->custom && $essayinfo->score == 1) {
$attempt->correct = 1;
} else {
$attempt->correct = 0;
}
$attempt->useranswer = addslashes(serialize($essayinfo));
if (!update_record('lesson_attempts', $attempt)) {
error('Could not update essay score');
}
// Get grade information
$grade = current($grades);
$gradeinfo = lesson_grade($lesson, $attempt->retry, $attempt->userid);
// Set and update
$updategrade->id = $grade->id;
$updategrade->grade = $gradeinfo->grade;
if(update_record('lesson_grades', $updategrade)) {
// Log it
add_to_log($course->id, 'lesson', 'update grade', "essay.php?id=$cm->id", $lesson->name, $cm->id);
lesson_set_message(get_string('changessaved'), 'notifysuccess');
} else {
lesson_set_message(get_string('updatefailed', 'lesson'));
}
// update central gradebook
lesson_update_grades($lesson, $grade->userid);
redirect("$CFG->wwwroot/mod/lesson/essay.php?id=$cm->id");
} else {
error('Something is wrong with the form data');
}
break;
case 'email': // Sending an email(s) to a single user or all
require_sesskey();
// Get our users (could be singular)
if ($userid = optional_param('userid', 0, PARAM_INT)) {
$queryadd = " AND userid = $userid";
if (! $users = get_records('user', 'id', $userid)) {
error('Error: could not find users');
}
} else {
$queryadd = '';
if (!$users = get_records_sql("SELECT u.*
FROM {$CFG->prefix}user u,
{$CFG->prefix}lesson_attempts a
WHERE a.lessonid = '$lesson->id' and
u.id = a.userid
ORDER BY u.lastname")) {
error('Error: could not find users');
}
}
// Get lesson pages that are essay
if (!$pages = get_records_select('lesson_pages', "lessonid = $lesson->id AND qtype = ".LESSON_ESSAY)) {
error('Error: could not find lesson pages');
}
// Get only the attempts that are in response to essay questions
$pageids = implode(',', array_keys($pages)); // all the pageids in comma seperated list
if (!$attempts = get_records_select('lesson_attempts', "pageid IN($pageids)".$queryadd)) {
error ('No one has answered essay questions yet...');
}
// Get the answers
if (!$answers = get_records_select('lesson_answers', "lessonid = $lesson->id AND pageid IN($pageids)", '', 'pageid, score')) {
error ('Could not find answer records.');
}
$options = new stdClass;
$options->noclean = true;
foreach ($attempts as $attempt) {
$essayinfo = unserialize($attempt->useranswer);
if ($essayinfo->graded and !$essayinfo->sent) {
// Holds values for the essayemailsubject string for the email message
$a = new stdClass;
// Set the grade
$grades = get_records_select('lesson_grades', "lessonid = $lesson->id and userid = $attempt->userid", 'completed', '*', $attempt->retry, 1);
$grade = current($grades);
$a->newgrade = $grade->grade;
// Set the points
if ($lesson->custom) {
$a->earned = $essayinfo->score;
$a->outof = $answers[$attempt->pageid]->score;
} else {
$a->earned = $essayinfo->score;
$a->outof = 1;
}
// Set rest of the message values
$a->question = format_text($pages[$attempt->pageid]->contents, FORMAT_MOODLE, $options);
$a->response = s(stripslashes_safe($essayinfo->answer));
$a->teacher = $course->teacher;
$a->comment = s($essayinfo->response);
// Fetch message HTML and plain text formats
$message = get_string('essayemailmessage', 'lesson', $a);
$plaintxt = format_text_email($message, FORMAT_HTML);
// Subject
$subject = get_string('essayemailsubject', 'lesson', format_string($pages[$attempt->pageid]->title,true));
if(email_to_user($users[$attempt->userid], $USER, $subject, $plaintxt, $message)) {
$essayinfo->sent = 1;
$attempt->useranswer = addslashes(serialize($essayinfo));
update_record('lesson_attempts', $attempt);
// Log it
add_to_log($course->id, 'lesson', 'update email essay grade', "essay.php?id=$cm->id", format_string($pages[$attempt->pageid]->title,true).': '.fullname($users[$attempt->userid]), $cm->id);
} else {
error('Emailing Failed');
}
}
}
lesson_set_message(get_string('emailsuccess', 'lesson'), 'notifysuccess');
redirect("$CFG->wwwroot/mod/lesson/essay.php?id=$cm->id");
break;
}
// Log it
add_to_log($course->id, 'lesson', 'view grade', "essay.php?id=$cm->id", get_string('manualgrading', 'lesson'), $cm->id);
lesson_print_header($cm, $course, $lesson, 'essay');
switch ($mode) {
case 'display':
// Expects $user, $essayattempts and $pages to be set already
// Group all the essays by userid
$studentessays = array();
foreach ($essayattempts as $essay) {
// Not very nice :) but basically
// this organizes the essays so we know how many
// times a student answered an essay per try and per page
$studentessays[$essay->userid][$essay->pageid][$essay->retry][] = $essay;
}
// Setup table
$table = new stdClass;
$table->head = array($course->students, get_string('essays', 'lesson'), get_string('email', 'lesson'));
$table->align = array('left', 'left', 'left');
$table->wrap = array('nowrap', 'nowrap', 'nowrap');
// Get the student ids of the users who have answered the essay question
$userids = array_keys($studentessays);
// Cycle through all the students
foreach ($userids as $userid) {
$studentname = fullname($users[$userid], true);
$essaylinks = array();
// Number of attempts on the lesson
$attempts = count_records('lesson_grades', 'userid', $userid, 'lessonid', $lesson->id);
// Go through each essay page
foreach ($studentessays[$userid] as $page => $tries) {
$count = 0;
// Go through each attempt per page
foreach($tries as $try) {
if ($count == $attempts) {
break; // Stop displaying essays (attempt not completed)
}
$count++;
// Make sure they didn't answer it more than the max number of attmepts
if (count($try) > $lesson->maxattempts) {
$essay = $try[$lesson->maxattempts-1];
} else {
$essay = end($try);
}
// Start processing the attempt
$essayinfo = unserialize($essay->useranswer);
// Different colors for all the states of an essay (graded, if sent, not graded)
if (!$essayinfo->graded) {
$class = ' class="graded"';
} elseif (!$essayinfo->sent) {
$class = ' class="sent"';
} else {
$class = ' class="ungraded"';
}
// link for each essay
$essaylinks[] = "<a$class href=\"$CFG->wwwroot/mod/lesson/essay.php?id=$cm->id&mode=grade&attemptid=$essay->id&sesskey=".sesskey().'">'.userdate($essay->timeseen, get_string('strftimedatetime')).' '.format_string($pages[$essay->pageid]->title,true).'</a>';
}
}
// email link for this user
$emaillink = "<a href=\"$CFG->wwwroot/mod/lesson/essay.php?id=$cm->id&mode=email&userid=$userid&sesskey=".sesskey().'">'.get_string('emailgradedessays', 'lesson').'</a>';
$table->data[] = array(print_user_picture($userid, $course->id, $users[$userid]->picture, 0, true).$studentname, implode("<br />\n", $essaylinks), $emaillink);
}
// email link for all users
$emailalllink = "<a href=\"$CFG->wwwroot/mod/lesson/essay.php?id=$cm->id&mode=email&sesskey=".sesskey().'">'.get_string('emailallgradedessays', 'lesson').'</a>';
$table->data[] = array(' ', ' ', $emailalllink);
print_table($table);
break;
case 'grade':
// Grading form
// Expects the following to be set: $attemptid, $answer, $user, $page, $attempt
echo '<div class="grade">
<form id="essaygrade" method="post" action="'.$CFG->wwwroot.'/mod/lesson/essay.php">
<input type="hidden" name="id" value="'.$cm->id.'" />
<input type="hidden" name="mode" value="update" />
<input type="hidden" name="attemptid" value="'.$attemptid.'" />
<input type="hidden" name="sesskey" value="'.sesskey().'" />';
// All tables will have these settings
$table = new stdClass;
$table->align = array('left');
$table->wrap = array();
$table->width = '50%';
$table->size = array('100%');
$table->class = 'generaltable gradetable';
// Print the question
$table->head = array(get_string('question', 'lesson'));
$options = new stdClass;
$options->noclean = true;
$table->data[] = array(format_text($page->contents, FORMAT_MOODLE, $options));
print_table($table);
unset($table->data);
// Now the user's answer
$essayinfo = unserialize($attempt->useranswer);
$table->head = array(get_string('studentresponse', 'lesson', fullname($user, true)));
$table->data[] = array(s(stripslashes_safe($essayinfo->answer)));
print_table($table);
unset($table->data);
// Now a response box and grade drop-down for grader
$table->head = array(get_string('comments', 'lesson'));
$table->data[] = array(print_textarea(false, 15, 60, 0, 0, 'response', $essayinfo->response, $course->id, true));
$options = array();
if ($lesson->custom) {
for ($i=$answer->score; $i>=0; $i--) {
$options[$i] = $i;
}
} else {
$options[0] = get_string('nocredit', 'lesson');
$options[1] = get_string('credit', 'lesson');
}
$table->data[] = array(get_string('essayscore', 'lesson').': '.choose_from_menu($options, 'score', $essayinfo->score, '', '', '', true));
print_table($table);
echo '<div class="buttons">
<input type="submit" name="cancel" value="'.get_string('cancel').'" />
<input type="submit" value="'.get_string('savechanges').'" />
</div>
</form>
</div>';
break;
}
print_footer($course);
?>