mod/lesson/essay.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Provides the interface for grading essay questions
  20  *
  21  * @package mod_lesson
  22  * @copyright  1999 onwards Martin Dougiamas  {@link http://moodle.com}
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  **/
  25
  26 require_once('../../config.php');
  27 require_once($CFG->dirroot.'/mod/lesson/locallib.php');
  28 require_once($CFG->dirroot.'/mod/lesson/pagetypes/essay.php');
  29 require_once($CFG->dirroot.'/mod/lesson/essay_form.php');
  30 require_once($CFG->libdir.'/eventslib.php');
  31
  32 $id   = required_param('id', PARAM_INT);             // Course Module ID
  33 $mode = optional_param('mode', 'display', PARAM_ALPHA);
  34
  35 $cm = get_coursemodule_from_id('lesson', $id, 0, false, MUST_EXIST);
  36 $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
  37 $dblesson = $DB->get_record('lesson', array('id' => $cm->instance), '*', MUST_EXIST);
  38 $lesson = new lesson($dblesson);
  39
  40 require_login($course, false, $cm);
  41 $context = context_module::instance($cm->id);
  42 require_capability('mod/lesson:grade', $context);
  43
  44 $url = new moodle_url('/mod/lesson/essay.php', array('id'=>$id));
  45 if ($mode !== 'display') {
  46     $url->param('mode', $mode);
  47 }
  48 $PAGE->set_url($url);
  49
  50 $currentgroup = groups_get_activity_group($cm, true);
  51
  52 $attempt = new stdClass();
  53 $user = new stdClass();
  54 $attemptid = optional_param('attemptid', 0, PARAM_INT);
  55
  56 $formattextdefoptions = new stdClass();
  57 $formattextdefoptions->noclean = true;
  58 $formattextdefoptions->para = false;
  59 $formattextdefoptions->context = $context;
  60
  61 if ($attemptid > 0) {
  62     $attempt = $DB->get_record('lesson_attempts', array('id' => $attemptid));
  63     $answer = $DB->get_record('lesson_answers', array('lessonid' => $lesson->id, 'pageid' => $attempt->pageid));
  64     $user = $DB->get_record('user', array('id' => $attempt->userid));
  65     // Apply overrides.
  66     $lesson->update_effective_access($user->id);
  67     $scoreoptions = array();
  68     if ($lesson->custom) {
  69         $i = $answer->score;
  70         while ($i >= 0) {
  71             $scoreoptions[$i] = (string)$i;
  72             $i--;
  73         }
  74     } else {
  75         $scoreoptions[0] = get_string('nocredit', 'lesson');
  76         $scoreoptions[1] = get_string('credit', 'lesson');
  77     }
  78 }
  79
  80 /// Handle any preprocessing before header is printed - based on $mode
  81 switch ($mode) {
  82     case 'grade':
  83         // Grading form - get the necessary data
  84         require_sesskey();
  85
  86         if (empty($attempt)) {
  87             print_error('cannotfindattempt', 'lesson');
  88         }
  89         if (empty($user)) {
  90             print_error('cannotfinduser', 'lesson');
  91         }
  92         if (empty($answer)) {
  93             print_error('cannotfindanswer', 'lesson');
  94         }
  95         break;
  96
  97     case 'update':
  98         require_sesskey();
  99
 100         if (empty($attempt)) {
 101             print_error('cannotfindattempt', 'lesson');
 102         }
 103         if (empty($user)) {
 104             print_error('cannotfinduser', 'lesson');
 105         }
 106
 107         $editoroptions = array('noclean' => true, 'maxfiles' => EDITOR_UNLIMITED_FILES,
 108                 'maxbytes' => $CFG->maxbytes, 'context' => $context);
 109         $essayinfo = lesson_page_type_essay::extract_useranswer($attempt->useranswer);
 110         $essayinfo = file_prepare_standard_editor($essayinfo, 'response', $editoroptions, $context,
 111                 'mod_lesson', 'essay_responses', $attempt->id);
 112         $mform = new essay_grading_form(null, array('scoreoptions' => $scoreoptions, 'user' => $user));
 113         $mform->set_data($essayinfo);
 114         if ($mform->is_cancelled()) {
 115             redirect("$CFG->wwwroot/mod/lesson/essay.php?id=$cm->id");
 116         }
 117         if ($form = $mform->get_data()) {
 118             if (!$grades = $DB->get_records('lesson_grades', array("lessonid"=>$lesson->id, "userid"=>$attempt->userid), 'completed', '*', $attempt->retry, 1)) {
 119                 print_error('cannotfindgrade', 'lesson');
 120             }
 121
 122             $essayinfo->graded = 1;
 123             $essayinfo->score = $form->score;
 124             $form = file_postupdate_standard_editor($form, 'response', $editoroptions, $context,
 125                                         'mod_lesson', 'essay_responses', $attempt->id);
 126             $essayinfo->response = $form->response;
 127             $essayinfo->responseformat = $form->responseformat;
 128             $essayinfo->sent = 0;
 129             if (!$lesson->custom && $essayinfo->score == 1) {
 130                 $attempt->correct = 1;
 131             } else {
 132                 $attempt->correct = 0;
 133             }
 134
 135             $attempt->useranswer = serialize($essayinfo);
 136
 137             $DB->update_record('lesson_attempts', $attempt);
 138
 139             // Get grade information
 140             $grade = current($grades);
 141             $gradeinfo = lesson_grade($lesson, $attempt->retry, $attempt->userid);
 142
 143             // Set and update
 144             $updategrade = new stdClass();
 145             $updategrade->id = $grade->id;
 146             $updategrade->grade = $gradeinfo->grade;
 147             $DB->update_record('lesson_grades', $updategrade);
 148
 149             $params = array(
 150                 'context' => $context,
 151                 'objectid' => $grade->id,
 152                 'courseid' => $course->id,
 153                 'relateduserid' => $attempt->userid,
 154                 'other' => array(
 155                     'lessonid' => $lesson->id,
 156                     'attemptid' => $attemptid
 157                 )
 158             );
 159             $event = \mod_lesson\event\essay_assessed::create($params);
 160             $event->add_record_snapshot('lesson', $dblesson);
 161             $event->trigger();
 162
 163             $lesson->add_message(get_string('changessaved'), 'notifysuccess');
 164
 165             // update central gradebook
 166             lesson_update_grades($lesson, $grade->userid);
 167
 168             redirect(new moodle_url('/mod/lesson/essay.php', array('id'=>$cm->id)));
 169         } else {
 170             print_error('invalidformdata');
 171         }
 172         break;
 173     case 'email':
 174         // Sending an email(s) to a single user or all
 175         require_sesskey();
 176
 177         // Get our users (could be singular)
 178         if ($userid = optional_param('userid', 0, PARAM_INT)) {
 179             $queryadd = " AND userid = ?";
 180             if (! $users = $DB->get_records('user', array('id' => $userid))) {
 181                 print_error('cannotfinduser', 'lesson');
 182             }
 183         } else {
 184             $queryadd = '';
 185
 186             // If group selected, only send to group members.
 187             list($esql, $params) = get_enrolled_sql($context, '', $currentgroup, true);
 188             list($sort, $sortparams) = users_order_by_sql('u');
 189             $params['lessonid'] = $lesson->id;
 190
 191             // Need to use inner view to avoid distinct + text
 192             if (!$users = $DB->get_records_sql("
 193                 SELECT u.*
 194                   FROM {user} u
 195                   JOIN (
 196                            SELECT DISTINCT userid
 197                              FROM {lesson_attempts}
 198                             WHERE lessonid = :lessonid
 199                        ) ui ON u.id = ui.userid
 200                   JOIN ($esql) ue ON ue.id = u.id
 201                   ORDER BY $sort", $params)) {
 202                 print_error('cannotfinduser', 'lesson');
 203             }
 204         }
 205
 206         $pages = $lesson->load_all_pages();
 207         foreach ($pages as $key=>$page) {
 208             if ($page->qtype != LESSON_PAGE_ESSAY) {
 209                 unset($pages[$key]);
 210             }
 211         }
 212
 213         // Get only the attempts that are in response to essay questions
 214         list($usql, $params) = $DB->get_in_or_equal(array_keys($pages));
 215         if (!empty($queryadd)) {
 216             $params[] = $userid;
 217         }
 218         if (!$attempts = $DB->get_records_select('lesson_attempts', "pageid $usql".$queryadd, $params)) {
 219             print_error('nooneansweredthisquestion', 'lesson');
 220         }
 221         // Get the answers
 222         list($answerUsql, $parameters) = $DB->get_in_or_equal(array_keys($pages));
 223         array_unshift($parameters, $lesson->id);
 224         if (!$answers = $DB->get_records_select('lesson_answers', "lessonid = ? AND pageid $answerUsql", $parameters, '', 'pageid, score')) {
 225             print_error('cannotfindanswer', 'lesson');
 226         }
 227
 228         foreach ($attempts as $attempt) {
 229             $essayinfo = lesson_page_type_essay::extract_useranswer($attempt->useranswer);
 230             if ($essayinfo->graded && !$essayinfo->sent) {
 231                 // Holds values for the essayemailsubject string for the email message
 232                 $a = new stdClass;
 233
 234                 // Set the grade
 235                 $grades = $DB->get_records('lesson_grades', array("lessonid"=>$lesson->id, "userid"=>$attempt->userid), 'completed', '*', $attempt->retry, 1);
 236                 $grade  = current($grades);
 237                 $a->newgrade = $grade->grade;
 238
 239                 // Set the points
 240                 if ($lesson->custom) {
 241                     $a->earned = $essayinfo->score;
 242                     $a->outof  = $answers[$attempt->pageid]->score;
 243                 } else {
 244                     $a->earned = $essayinfo->score;
 245                     $a->outof  = 1;
 246                 }
 247
 248                 // Set rest of the message values
 249                 $currentpage = $lesson->load_page($attempt->pageid);
 250                 $a->question = format_text($currentpage->contents, $currentpage->contentsformat, $formattextdefoptions);
 251                 $a->response = format_text($essayinfo->answer, $essayinfo->answerformat,
 252                         array('context' => $context, 'para' => true));
 253                 $a->comment = $essayinfo->response;
 254                 $a->comment = file_rewrite_pluginfile_urls($a->comment, 'pluginfile.php', $context->id,
 255                             'mod_lesson', 'essay_responses', $attempt->id);
 256                 $a->comment  = format_text($a->comment, $essayinfo->responseformat, $formattextdefoptions);
 257                 $a->lesson = format_string($lesson->name, true);
 258
 259                 // Fetch message HTML and plain text formats
 260                 $message  = get_string('essayemailmessage2', 'lesson', $a);
 261                 $plaintext = format_text_email($message, FORMAT_HTML);
 262
 263                 // Subject
 264                 $subject = get_string('essayemailsubject', 'lesson');
 265
 266                 // Context url.
 267                 $contexturl = new moodle_url('/grade/report/user/index.php', array('id' => $course->id));
 268
 269                 $eventdata = new \core\message\message();
 270                 $eventdata->courseid         = $course->id;
 271                 $eventdata->modulename       = 'lesson';
 272                 $eventdata->userfrom         = $USER;
 273                 $eventdata->userto           = $users[$attempt->userid];
 274                 $eventdata->subject          = $subject;
 275                 $eventdata->fullmessage      = $plaintext;
 276                 $eventdata->fullmessageformat = FORMAT_PLAIN;
 277                 $eventdata->fullmessagehtml  = $message;
 278                 $eventdata->smallmessage     = '';
 279                 $eventdata->contexturl       = $contexturl;
 280
 281                 // Required for messaging framework
 282                 $eventdata->component = 'mod_lesson';
 283                 $eventdata->name = 'graded_essay';
 284
 285                 message_send($eventdata);
 286                 $essayinfo->sent = 1;
 287                 $attempt->useranswer = serialize($essayinfo);
 288                 $DB->update_record('lesson_attempts', $attempt);
 289             }
 290         }
 291         $lesson->add_message(get_string('emailsuccess', 'lesson'), 'notifysuccess');
 292         redirect(new moodle_url('/mod/lesson/essay.php', array('id'=>$cm->id)));
 293         break;
 294     case 'display':  // Default view - get the necessary data
 295     default:
 296         // Get lesson pages that are essay
 297         $pages = $lesson->load_all_pages();
 298         foreach ($pages as $key=>$page) {
 299             if ($page->qtype != LESSON_PAGE_ESSAY) {
 300                 unset($pages[$key]);
 301             }
 302         }
 303         if (count($pages) > 0) {
 304             // Get only the attempts that are in response to essay questions
 305             list($usql, $parameters) = $DB->get_in_or_equal(array_keys($pages), SQL_PARAMS_NAMED);
 306             // If group selected, only get group members attempts.
 307             list($esql, $params) = get_enrolled_sql($context, '', $currentgroup, true);
 308             $parameters = array_merge($params, $parameters);
 309
 310             $sql = "SELECT a.*
 311                         FROM {lesson_attempts} a
 312                         JOIN ($esql) ue ON a.userid = ue.id
 313                         WHERE pageid $usql";
 314             if ($essayattempts = $DB->get_records_sql($sql, $parameters)) {
 315                 $ufields = user_picture::fields('u');
 316                 // Get all the users who have taken this lesson.
 317                 list($sort, $sortparams) = users_order_by_sql('u');
 318
 319                 $params['lessonid'] = $lesson->id;
 320                 $sql = "SELECT DISTINCT $ufields
 321                         FROM {user} u
 322                         JOIN {lesson_attempts} a ON u.id = a.userid
 323                         JOIN ($esql) ue ON ue.id = a.userid
 324                         WHERE a.lessonid = :lessonid
 325                         ORDER BY $sort";
 326                 if (!$users = $DB->get_records_sql($sql, $params)) {
 327                     $mode = 'none'; // not displaying anything
 328                     if (!empty($currentgroup)) {
 329                         $groupname = groups_get_group_name($currentgroup);
 330                         $lesson->add_message(get_string('noonehasansweredgroup', 'lesson', $groupname));
 331                     } else {
 332                         $lesson->add_message(get_string('noonehasanswered', 'lesson'));
 333                     }
 334                 }
 335             } else {
 336                 $mode = 'none'; // not displaying anything
 337                 if (!empty($currentgroup)) {
 338                     $groupname = groups_get_group_name($currentgroup);
 339                     $lesson->add_message(get_string('noonehasansweredgroup', 'lesson', $groupname));
 340                 } else {
 341                     $lesson->add_message(get_string('noonehasanswered', 'lesson'));
 342                 }
 343             }
 344         } else {
 345             $mode = 'none'; // not displaying anything
 346             $lesson->add_message(get_string('noessayquestionsfound', 'lesson'));
 347         }
 348         break;
 349 }
 350
 351 $lessonoutput = $PAGE->get_renderer('mod_lesson');
 352 echo $lessonoutput->header($lesson, $cm, 'essay', false, null, get_string('manualgrading', 'lesson'));
 353
 354 switch ($mode) {
 355     case 'display':
 356         groups_print_activity_menu($cm, $url);
 357         // Expects $user, $essayattempts and $pages to be set already
 358
 359         // Group all the essays by userid
 360         $studentessays = array();
 361         foreach ($essayattempts as $essay) {
 362             // Not very nice :) but basically
 363             //   this organizes the essays so we know how many
 364             //   times a student answered an essay per try and per page
 365             $studentessays[$essay->userid][$essay->pageid][$essay->retry][] = $essay;
 366         }
 367
 368         // Setup table
 369         $table = new html_table();
 370         $table->head = array(get_string('name'), get_string('essays', 'lesson'), get_string('email', 'lesson'));
 371         $table->attributes['class'] = 'standardtable generaltable';
 372         $table->align = array('left', 'left', 'left');
 373         $table->wrap = array('nowrap', 'nowrap', '');
 374
 375         // Cycle through all the students
 376         foreach (array_keys($studentessays) as $userid) {
 377             $studentname = fullname($users[$userid], true);
 378             $essaylinks = array();
 379
 380             // Number of attempts on the lesson
 381             $attempts = $DB->count_records('lesson_grades', array('userid'=>$userid, 'lessonid'=>$lesson->id));
 382
 383             // Go through each essay page
 384             foreach ($studentessays[$userid] as $page => $tries) {
 385                 $count = 0;
 386
 387                 // Go through each attempt per page
 388                 foreach($tries as $try) {
 389                     if ($count == $attempts) {
 390                         break;  // Stop displaying essays (attempt not completed)
 391                     }
 392                     $count++;
 393
 394                     // Make sure they didn't answer it more than the max number of attmepts
 395                     if (count($try) > $lesson->maxattempts) {
 396                         $essay = $try[$lesson->maxattempts-1];
 397                     } else {
 398                         $essay = end($try);
 399                     }
 400
 401                     // Start processing the attempt
 402                     $essayinfo = lesson_page_type_essay::extract_useranswer($essay->useranswer);
 403
 404                     // link for each essay
 405                     $url = new moodle_url('/mod/lesson/essay.php', array('id'=>$cm->id,'mode'=>'grade','attemptid'=>$essay->id,'sesskey'=>sesskey()));
 406                     $attributes = array();
 407                     // Different colors for all the states of an essay (graded, if sent, not graded)
 408                     if (!$essayinfo->graded) {
 409                         $attributes['class'] = "essayungraded";
 410                     } elseif (!$essayinfo->sent) {
 411                         $attributes['class'] = "essaygraded";
 412                     } else {
 413                         $attributes['class'] = "essaysent";
 414                     }
 415                     $essaylinks[] = html_writer::link($url, userdate($essay->timeseen, get_string('strftimedatetime')).' '.format_string($pages[$essay->pageid]->title,true), $attributes);
 416                 }
 417             }
 418             // email link for this user
 419             $url = new moodle_url('/mod/lesson/essay.php', array('id'=>$cm->id,'mode'=>'email','userid'=>$userid,'sesskey'=>sesskey()));
 420             $emaillink = html_writer::link($url, get_string('emailgradedessays', 'lesson'));
 421
 422             $table->data[] = array($OUTPUT->user_picture($users[$userid], array('courseid'=>$course->id)).$studentname, implode("<br />", $essaylinks), $emaillink);
 423         }
 424
 425         // email link for all users
 426         $url = new moodle_url('/mod/lesson/essay.php', array('id'=>$cm->id,'mode'=>'email','sesskey'=>sesskey()));
 427         $emailalllink = html_writer::link($url, get_string('emailallgradedessays', 'lesson'));
 428
 429         $table->data[] = array(' ', ' ', $emailalllink);
 430
 431         echo html_writer::table($table);
 432         break;
 433     case 'grade':
 434         // Trigger the essay grade viewed event.
 435         $event = \mod_lesson\event\essay_attempt_viewed::create(array(
 436             'objectid' => $attempt->id,
 437             'relateduserid' => $attempt->userid,
 438             'context' => $context,
 439             'courseid' => $course->id,
 440         ));
 441         $event->add_record_snapshot('lesson_attempts', $attempt);
 442         $event->trigger();
 443
 444         // Grading form
 445         // Expects the following to be set: $attemptid, $answer, $user, $page, $attempt
 446         $essayinfo = lesson_page_type_essay::extract_useranswer($attempt->useranswer);
 447         $currentpage = $lesson->load_page($attempt->pageid);
 448
 449         $mform = new essay_grading_form(null, array('scoreoptions'=>$scoreoptions, 'user'=>$user));
 450         $data = new stdClass;
 451         $data->id = $cm->id;
 452         $data->attemptid = $attemptid;
 453         $data->score = $essayinfo->score;
 454         $data->question = format_text($currentpage->contents, $currentpage->contentsformat, $formattextdefoptions);
 455         $data->studentanswer = format_text($essayinfo->answer, $essayinfo->answerformat,
 456                 array('context' => $context, 'para' => true));
 457         $data->response = $essayinfo->response;
 458         $data->responseformat = $essayinfo->responseformat;
 459         $editoroptions = array('noclean' => true, 'maxfiles' => EDITOR_UNLIMITED_FILES,
 460                 'maxbytes' => $CFG->maxbytes, 'context' => $context);
 461         $data = file_prepare_standard_editor($data, 'response', $editoroptions, $context,
 462                 'mod_lesson', 'essay_responses', $attempt->id);
 463         $mform->set_data($data);
 464
 465         $mform->display();
 466         break;
 467     default:
 468         groups_print_activity_menu($cm, $url);
 469         break;
 470 }
 471
 472 echo $OUTPUT->footer();