mod/assign/gradingtable.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * This file contains the definition for the grading table which subclassses easy_table
  19  *
  20  * @package   mod_assign
  21  * @copyright 2012 NetSpot {@link http://www.netspot.com.au}
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 defined('MOODLE_INTERNAL') || die();
  26
  27 require_once($CFG->libdir.'/tablelib.php');
  28 require_once($CFG->libdir.'/gradelib.php');
  29 require_once($CFG->dirroot.'/mod/assign/locallib.php');
  30
  31 /**
  32  * Extends table_sql to provide a table of assignment submissions
  33  *
  34  * @package   mod_assign
  35  * @copyright 2012 NetSpot {@link http://www.netspot.com.au}
  36  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  37  */
  38 class assign_grading_table extends table_sql implements renderable {
  39     /** @var assign $assignment */
  40     private $assignment = null;
  41     /** @var int $perpage */
  42     private $perpage = 10;
  43     /** @var int $rownum (global index of current row in table) */
  44     private $rownum = -1;
  45     /** @var renderer_base for getting output */
  46     private $output = null;
  47     /** @var stdClass gradinginfo */
  48     private $gradinginfo = null;
  49     /** @var int $tablemaxrows */
  50     private $tablemaxrows = 10000;
  51     /** @var boolean $quickgrading */
  52     private $quickgrading = false;
  53     /** @var boolean $hasgrantextension - Only do the capability check once for the entire table */
  54     private $hasgrantextension = false;
  55     /** @var boolean $hasgrade - Only do the capability check once for the entire table */
  56     private $hasgrade = false;
  57     /** @var array $groupsubmissions - A static cache of group submissions */
  58     private $groupsubmissions = array();
  59     /** @var array $submissiongroups - A static cache of submission groups */
  60     private $submissiongroups = array();
  61     /** @var string $plugingradingbatchoperations - List of plugin supported batch operations */
  62     public $plugingradingbatchoperations = array();
  63     /** @var array $plugincache - A cache of plugin lookups to match a column name to a plugin efficiently */
  64     private $plugincache = array();
  65     /** @var array $scale - A list of the keys and descriptions for the custom scale */
  66     private $scale = null;
  67
  68     /**
  69      * overridden constructor keeps a reference to the assignment class that is displaying this table
  70      *
  71      * @param assign $assignment The assignment class
  72      * @param int $perpage how many per page
  73      * @param string $filter The current filter
  74      * @param int $rowoffset For showing a subsequent page of results
  75      * @param bool $quickgrading Is this table wrapped in a quickgrading form?
  76      * @param string $downloadfilename
  77      */
  78     public function __construct(assign $assignment,
  79                                 $perpage,
  80                                 $filter,
  81                                 $rowoffset,
  82                                 $quickgrading,
  83                                 $downloadfilename = null) {
  84         global $CFG, $PAGE, $DB, $USER;
  85         parent::__construct('mod_assign_grading');
  86         $this->is_persistent(true);
  87         $this->assignment = $assignment;
  88
  89         // Check permissions up front.
  90         $this->hasgrantextension = has_capability('mod/assign:grantextension',
  91                                                   $this->assignment->get_context());
  92         $this->hasgrade = $this->assignment->can_grade();
  93
  94         // Check if we have the elevated view capablities to see the blind details.
  95         $this->hasviewblind = has_capability('mod/assign:viewblinddetails',
  96                 $this->assignment->get_context());
  97
  98         foreach ($assignment->get_feedback_plugins() as $plugin) {
  99             if ($plugin->is_visible() && $plugin->is_enabled()) {
 100                 foreach ($plugin->get_grading_batch_operations() as $action => $description) {
 101                     if (empty($this->plugingradingbatchoperations)) {
 102                         $this->plugingradingbatchoperations[$plugin->get_type()] = array();
 103                     }
 104                     $this->plugingradingbatchoperations[$plugin->get_type()][$action] = $description;
 105                 }
 106             }
 107         }
 108         $this->perpage = $perpage;
 109         $this->quickgrading = $quickgrading && $this->hasgrade;
 110         $this->output = $PAGE->get_renderer('mod_assign');
 111
 112         $urlparams = array('action'=>'grading', 'id'=>$assignment->get_course_module()->id);
 113         $url = new moodle_url($CFG->wwwroot . '/mod/assign/view.php', $urlparams);
 114         $this->define_baseurl($url);
 115
 116         // Do some business - then set the sql.
 117         $currentgroup = groups_get_activity_group($assignment->get_course_module(), true);
 118
 119         if ($rowoffset) {
 120             $this->rownum = $rowoffset - 1;
 121         }
 122
 123         $users = array_keys( $assignment->list_participants($currentgroup, true));
 124         if (count($users) == 0) {
 125             // Insert a record that will never match to the sql is still valid.
 126             $users[] = -1;
 127         }
 128
 129         $params = array();
 130         $params['assignmentid1'] = (int)$this->assignment->get_instance()->id;
 131         $params['assignmentid2'] = (int)$this->assignment->get_instance()->id;
 132         $params['assignmentid3'] = (int)$this->assignment->get_instance()->id;
 133
 134         $extrauserfields = get_extra_user_fields($this->assignment->get_context());
 135
 136         $fields = user_picture::fields('u', $extrauserfields) . ', ';
 137         $fields .= 'u.id as userid, ';
 138         $fields .= 's.status as status, ';
 139         $fields .= 's.id as submissionid, ';
 140         $fields .= 's.timecreated as firstsubmission, ';
 141         $fields .= 's.timemodified as timesubmitted, ';
 142         $fields .= 's.attemptnumber as attemptnumber, ';
 143         $fields .= 'g.id as gradeid, ';
 144         $fields .= 'g.grade as grade, ';
 145         $fields .= 'g.timemodified as timemarked, ';
 146         $fields .= 'g.timecreated as firstmarked, ';
 147         $fields .= 'uf.mailed as mailed, ';
 148         $fields .= 'uf.locked as locked, ';
 149         $fields .= 'uf.extensionduedate as extensionduedate, ';
 150         $fields .= 'uf.workflowstate as workflowstate, ';
 151         $fields .= 'uf.allocatedmarker as allocatedmarker ';
 152
 153         $from = '{user} u
 154                          LEFT JOIN {assign_submission} s
 155                                 ON u.id = s.userid
 156                                AND s.assignment = :assignmentid1
 157                                AND s.latest = 1
 158                          LEFT JOIN {assign_grades} g
 159                                 ON u.id = g.userid
 160                                AND g.assignment = :assignmentid2 ';
 161
 162         // For group submissions we don't immediately create an entry in the assign_submission table for each user,
 163         // instead the userid is set to 0. In this case we use a different query to retrieve the grade for the user.
 164         if ($this->assignment->get_instance()->teamsubmission) {
 165             $params['assignmentid4'] = (int) $this->assignment->get_instance()->id;
 166             $grademaxattempt = 'SELECT mxg.userid, MAX(mxg.attemptnumber) AS maxattempt
 167                                   FROM {assign_grades} mxg
 168                                  WHERE mxg.assignment = :assignmentid4
 169                               GROUP BY mxg.userid';
 170             $from .= 'LEFT JOIN (' . $grademaxattempt . ') gmx
 171                              ON u.id = gmx.userid
 172                             AND g.attemptnumber = gmx.maxattempt ';
 173         } else {
 174             $from .= 'AND g.attemptnumber = s.attemptnumber ';
 175         }
 176
 177         $from .= 'LEFT JOIN {assign_user_flags} uf
 178                          ON u.id = uf.userid
 179                         AND uf.assignment = :assignmentid3';
 180
 181         $userparams = array();
 182         $userindex = 0;
 183
 184         list($userwhere, $userparams) = $DB->get_in_or_equal($users, SQL_PARAMS_NAMED, 'user');
 185         $where = 'u.id ' . $userwhere;
 186         $params = array_merge($params, $userparams);
 187
 188         // The filters do not make sense when there are no submissions, so do not apply them.
 189         if ($this->assignment->is_any_submission_plugin_enabled()) {
 190             if ($filter == ASSIGN_FILTER_SUBMITTED) {
 191                 $where .= ' AND (s.timemodified IS NOT NULL AND
 192                                  s.status = :submitted) ';
 193                 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;
 194
 195             } else if ($filter == ASSIGN_FILTER_NOT_SUBMITTED) {
 196                 $where .= ' AND (s.timemodified IS NULL OR s.status != :submitted) ';
 197                 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;
 198             } else if ($filter == ASSIGN_FILTER_REQUIRE_GRADING) {
 199                 $where .= ' AND (s.timemodified IS NOT NULL AND
 200                                  s.status = :submitted AND
 201                                  (s.timemodified >= g.timemodified OR g.timemodified IS NULL OR g.grade IS NULL))';
 202                 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;
 203
 204             } else if (strpos($filter, ASSIGN_FILTER_SINGLE_USER) === 0) {
 205                 $userfilter = (int) array_pop(explode('=', $filter));
 206                 $where .= ' AND (u.id = :userid)';
 207                 $params['userid'] = $userfilter;
 208             }
 209         }
 210
 211         if ($this->assignment->get_instance()->markingworkflow &&
 212             $this->assignment->get_instance()->markingallocation) {
 213             if (has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {
 214                 // Check to see if marker filter is set.
 215                 $markerfilter = (int)get_user_preferences('assign_markerfilter', '');
 216                 if (!empty($markerfilter)) {
 217                     if ($markerfilter == ASSIGN_MARKER_FILTER_NO_MARKER) {
 218                         $where .= ' AND (uf.allocatedmarker IS NULL OR uf.allocatedmarker = 0)';
 219                     } else {
 220                         $where .= ' AND uf.allocatedmarker = :markerid';
 221                         $params['markerid'] = $markerfilter;
 222                     }
 223                 }
 224             } else { // Only show users allocated to this marker.
 225                 $where .= ' AND uf.allocatedmarker = :markerid';
 226                 $params['markerid'] = $USER->id;
 227             }
 228         }
 229
 230         if ($this->assignment->get_instance()->markingworkflow) {
 231             $workflowstates = $this->assignment->get_marking_workflow_states_for_current_user();
 232             if (!empty($workflowstates)) {
 233                 $workflowfilter = get_user_preferences('assign_workflowfilter', '');
 234                 if ($workflowfilter == ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED) {
 235                     $where .= ' AND (uf.workflowstate = :workflowstate OR uf.workflowstate IS NULL OR '.
 236                         $DB->sql_isempty('assign_user_flags', 'workflowstate', true, true).')';
 237                     $params['workflowstate'] = $workflowfilter;
 238                 } else if (array_key_exists($workflowfilter, $workflowstates)) {
 239                     $where .= ' AND uf.workflowstate = :workflowstate';
 240                     $params['workflowstate'] = $workflowfilter;
 241                 }
 242             }
 243         }
 244
 245         $this->set_sql($fields, $from, $where, $params);
 246
 247         if ($downloadfilename) {
 248             $this->is_downloading('csv', $downloadfilename);
 249         }
 250
 251         $columns = array();
 252         $headers = array();
 253
 254         // Select.
 255         if (!$this->is_downloading() && $this->hasgrade) {
 256             $columns[] = 'select';
 257             $headers[] = get_string('select') .
 258                     '<div class="selectall"><label class="accesshide" for="selectall">' . get_string('selectall') . '</label>
 259                     <input type="checkbox" id="selectall" name="selectall" title="' . get_string('selectall') . '"/></div>';
 260         }
 261
 262         // User picture.
 263         if ($this->hasviewblind || !$this->assignment->is_blind_marking()) {
 264             if (!$this->is_downloading()) {
 265                 $columns[] = 'picture';
 266                 $headers[] = get_string('pictureofuser');
 267             } else {
 268                 $columns[] = 'recordid';
 269                 $headers[] = get_string('recordid', 'assign');
 270             }
 271
 272             // Fullname.
 273             $columns[] = 'fullname';
 274             $headers[] = get_string('fullname');
 275
 276             foreach ($extrauserfields as $extrafield) {
 277                 $columns[] = $extrafield;
 278                 $headers[] = get_user_field_name($extrafield);
 279             }
 280         } else {
 281             // Record ID.
 282             $columns[] = 'recordid';
 283             $headers[] = get_string('recordid', 'assign');
 284         }
 285
 286         // Submission status.
 287         $columns[] = 'status';
 288         $headers[] = get_string('status', 'assign');
 289
 290         // Team submission columns.
 291         if ($assignment->get_instance()->teamsubmission) {
 292             $columns[] = 'team';
 293             $headers[] = get_string('submissionteam', 'assign');
 294         }
 295         // Allocated marker.
 296         if ($this->assignment->get_instance()->markingworkflow &&
 297             $this->assignment->get_instance()->markingallocation &&
 298             has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {
 299             // Add a column for the allocated marker.
 300             $columns[] = 'allocatedmarker';
 301             $headers[] = get_string('marker', 'assign');
 302         }
 303         // Grade.
 304         $columns[] = 'grade';
 305         $headers[] = get_string('grade');
 306         if ($this->is_downloading()) {
 307             if ($this->assignment->get_instance()->grade >= 0) {
 308                 $columns[] = 'grademax';
 309                 $headers[] = get_string('maxgrade', 'assign');
 310             } else {
 311                 // This is a custom scale.
 312                 $columns[] = 'scale';
 313                 $headers[] = get_string('scale', 'assign');
 314             }
 315
 316             if ($this->assignment->get_instance()->markingworkflow) {
 317                 // Add a column for the marking workflow state.
 318                 $columns[] = 'workflowstate';
 319                 $headers[] = get_string('markingworkflowstate', 'assign');
 320             }
 321             // Add a column for the list of valid marking workflow states.
 322             $columns[] = 'gradecanbechanged';
 323             $headers[] = get_string('gradecanbechanged', 'assign');
 324         }
 325         if (!$this->is_downloading() && $this->hasgrade) {
 326             // We have to call this column userid so we can use userid as a default sortable column.
 327             $columns[] = 'userid';
 328             $headers[] = get_string('edit');
 329         }
 330
 331         // Submission plugins.
 332         if ($assignment->is_any_submission_plugin_enabled()) {
 333             $columns[] = 'timesubmitted';
 334             $headers[] = get_string('lastmodifiedsubmission', 'assign');
 335
 336             foreach ($this->assignment->get_submission_plugins() as $plugin) {
 337                 if ($this->is_downloading()) {
 338                     if ($plugin->is_visible() && $plugin->is_enabled()) {
 339                         foreach ($plugin->get_editor_fields() as $field => $description) {
 340                             $index = 'plugin' . count($this->plugincache);
 341                             $this->plugincache[$index] = array($plugin, $field);
 342                             $columns[] = $index;
 343                             $headers[] = $plugin->get_name();
 344                         }
 345                     }
 346                 } else {
 347                     if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 348                         $index = 'plugin' . count($this->plugincache);
 349                         $this->plugincache[$index] = array($plugin);
 350                         $columns[] = $index;
 351                         $headers[] = $plugin->get_name();
 352                     }
 353                 }
 354             }
 355         }
 356
 357         // Time marked.
 358         $columns[] = 'timemarked';
 359         $headers[] = get_string('lastmodifiedgrade', 'assign');
 360
 361         // Feedback plugins.
 362         foreach ($this->assignment->get_feedback_plugins() as $plugin) {
 363             if ($this->is_downloading()) {
 364                 if ($plugin->is_visible() && $plugin->is_enabled()) {
 365                     foreach ($plugin->get_editor_fields() as $field => $description) {
 366                         $index = 'plugin' . count($this->plugincache);
 367                         $this->plugincache[$index] = array($plugin, $field);
 368                         $columns[] = $index;
 369                         $headers[] = $description;
 370                     }
 371                 }
 372             } else if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 373                 $index = 'plugin' . count($this->plugincache);
 374                 $this->plugincache[$index] = array($plugin);
 375                 $columns[] = $index;
 376                 $headers[] = $plugin->get_name();
 377             }
 378         }
 379
 380         // Exclude 'Final grade' column in downloaded grading worksheets.
 381         if (!$this->is_downloading()) {
 382             // Final grade.
 383             $columns[] = 'finalgrade';
 384             $headers[] = get_string('finalgrade', 'grades');
 385         }
 386
 387         // Load the grading info for all users.
 388         $this->gradinginfo = grade_get_grades($this->assignment->get_course()->id,
 389                                               'mod',
 390                                               'assign',
 391                                               $this->assignment->get_instance()->id,
 392                                               $users);
 393
 394         if (!empty($CFG->enableoutcomes) && !empty($this->gradinginfo->outcomes)) {
 395             $columns[] = 'outcomes';
 396             $headers[] = get_string('outcomes', 'grades');
 397         }
 398
 399         // Set the columns.
 400         $this->define_columns($columns);
 401         $this->define_headers($headers);
 402         foreach ($extrauserfields as $extrafield) {
 403              $this->column_class($extrafield, $extrafield);
 404         }
 405         $this->no_sorting('recordid');
 406         $this->no_sorting('finalgrade');
 407         $this->no_sorting('userid');
 408         $this->no_sorting('select');
 409         $this->no_sorting('outcomes');
 410
 411         if ($assignment->get_instance()->teamsubmission) {
 412             $this->no_sorting('team');
 413         }
 414
 415         $plugincolumnindex = 0;
 416         foreach ($this->assignment->get_submission_plugins() as $plugin) {
 417             if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 418                 $submissionpluginindex = 'plugin' . $plugincolumnindex++;
 419                 $this->no_sorting($submissionpluginindex);
 420             }
 421         }
 422         foreach ($this->assignment->get_feedback_plugins() as $plugin) {
 423             if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 424                 $feedbackpluginindex = 'plugin' . $plugincolumnindex++;
 425                 $this->no_sorting($feedbackpluginindex);
 426             }
 427         }
 428
 429         // When there is no data we still want the column headers printed in the csv file.
 430         if ($this->is_downloading()) {
 431             $this->start_output();
 432         }
 433     }
 434
 435     /**
 436      * Before adding each row to the table make sure rownum is incremented.
 437      *
 438      * @param array $row row of data from db used to make one row of the table.
 439      * @return array one row for the table
 440      */
 441     public function format_row($row) {
 442         if ($this->rownum < 0) {
 443             $this->rownum = $this->currpage * $this->pagesize;
 444         } else {
 445             $this->rownum += 1;
 446         }
 447
 448         return parent::format_row($row);
 449     }
 450
 451     /**
 452      * Add a column with an ID that uniquely identifies this user in this assignment.
 453      *
 454      * @param stdClass $row
 455      * @return string
 456      */
 457     public function col_recordid(stdClass $row) {
 458         return get_string('hiddenuser', 'assign') .
 459                $this->assignment->get_uniqueid_for_user($row->userid);
 460     }
 461
 462
 463     /**
 464      * Add the userid to the row class so it can be updated via ajax.
 465      *
 466      * @param stdClass $row The row of data
 467      * @return string The row class
 468      */
 469     public function get_row_class($row) {
 470         return 'user' . $row->userid;
 471     }
 472
 473     /**
 474      * Return the number of rows to display on a single page.
 475      *
 476      * @return int The number of rows per page
 477      */
 478     public function get_rows_per_page() {
 479         return $this->perpage;
 480     }
 481
 482     /**
 483      * list current marking workflow state
 484      *
 485      * @param stdClass $row
 486      * @return string
 487      */
 488     public function col_workflowstatus(stdClass $row) {
 489         $o = '';
 490
 491         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 492         // The function in the assignment keeps a static cache of this list of states.
 493         $workflowstates = $this->assignment->get_marking_workflow_states_for_current_user();
 494         $workflowstate = $row->workflowstate;
 495         if (empty($workflowstate)) {
 496             $workflowstate = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED;
 497         }
 498         if ($this->quickgrading && !$gradingdisabled) {
 499             $notmarked = get_string('markingworkflowstatenotmarked', 'assign');
 500             $name = 'quickgrade_' . $row->id . '_workflowstate';
 501             $o .= html_writer::select($workflowstates, $name, $workflowstate, array('' => $notmarked));
 502             // Check if this user is a marker that can't manage allocations and doesn't have the marker column added.
 503             if ($this->assignment->get_instance()->markingworkflow &&
 504                 $this->assignment->get_instance()->markingallocation &&
 505                 !has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {
 506
 507                 $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 508                 $o .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => $name,
 509                         'value' => $row->allocatedmarker));
 510             }
 511         } else {
 512             $o .= $this->output->container(get_string('markingworkflowstate' . $workflowstate, 'assign'), $workflowstate);
 513         }
 514         return $o;
 515     }
 516
 517     /**
 518      * For download only - list current marking workflow state
 519      *
 520      * @param stdClass $row - The row of data
 521      * @return string The current marking workflow state
 522      */
 523     public function col_workflowstate($row) {
 524         $state = $row->workflowstate;
 525         if (empty($state)) {
 526             $state = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED;
 527         }
 528
 529         return get_string('markingworkflowstate' . $state, 'assign');
 530     }
 531
 532     /**
 533      * list current marker
 534      *
 535      * @param stdClass $row - The row of data
 536      * @return id the user->id of the marker.
 537      */
 538     public function col_allocatedmarker(stdClass $row) {
 539         static $markers = null;
 540         static $markerlist = array();
 541         if ($markers === null) {
 542             list($sort, $params) = users_order_by_sql();
 543             $markers = get_users_by_capability($this->assignment->get_context(), 'mod/assign:grade', '', $sort);
 544             $markerlist[0] = get_string('choosemarker', 'assign');
 545             foreach ($markers as $marker) {
 546                 $markerlist[$marker->id] = fullname($marker);
 547             }
 548         }
 549         if (empty($markerlist)) {
 550             // TODO: add some form of notification here that no markers are available.
 551             return '';
 552         }
 553         if ($this->is_downloading()) {
 554             if (isset($markers[$row->allocatedmarker])) {
 555                 return fullname($markers[$row->allocatedmarker]);
 556             } else {
 557                 return '';
 558             }
 559         }
 560
 561         if ($this->quickgrading && has_capability('mod/assign:manageallocations', $this->assignment->get_context()) &&
 562             (empty($row->workflowstate) ||
 563              $row->workflowstate == ASSIGN_MARKING_WORKFLOW_STATE_INMARKING ||
 564              $row->workflowstate == ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED)) {
 565
 566             $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 567             return  html_writer::select($markerlist, $name, $row->allocatedmarker, false);
 568         } else if (!empty($row->allocatedmarker)) {
 569             $output = '';
 570             if ($this->quickgrading) { // Add hidden field for quickgrading page.
 571                 $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 572                 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>$name, 'value'=>$row->allocatedmarker));
 573             }
 574             $output .= $markerlist[$row->allocatedmarker];
 575             return $output;
 576         }
 577     }
 578     /**
 579      * For download only - list all the valid options for this custom scale.
 580      *
 581      * @param stdClass $row - The row of data
 582      * @return string A list of valid options for the current scale
 583      */
 584     public function col_scale($row) {
 585         global $DB;
 586
 587         if (empty($this->scale)) {
 588             $dbparams = array('id'=>-($this->assignment->get_instance()->grade));
 589             $this->scale = $DB->get_record('scale', $dbparams);
 590         }
 591
 592         if (!empty($this->scale->scale)) {
 593             return implode("\n", explode(',', $this->scale->scale));
 594         }
 595         return '';
 596     }
 597
 598     /**
 599      * Display a grade with scales etc.
 600      *
 601      * @param string $grade
 602      * @param boolean $editable
 603      * @param int $userid The user id of the user this grade belongs to
 604      * @param int $modified Timestamp showing when the grade was last modified
 605      * @return string The formatted grade
 606      */
 607     public function display_grade($grade, $editable, $userid, $modified) {
 608         if ($this->is_downloading()) {
 609             if ($this->assignment->get_instance()->grade >= 0) {
 610                 if ($grade == -1 || $grade === null) {
 611                     return '';
 612                 }
 613                 return format_float($grade, 2);
 614             } else {
 615                 // This is a custom scale.
 616                 $scale = $this->assignment->display_grade($grade, false);
 617                 if ($scale == '-') {
 618                     $scale = '';
 619                 }
 620                 return $scale;
 621             }
 622         }
 623         return $this->assignment->display_grade($grade, $editable, $userid, $modified);
 624     }
 625
 626     /**
 627      * Get the team info for this user.
 628      *
 629      * @param stdClass $row
 630      * @return string The team name
 631      */
 632     public function col_team(stdClass $row) {
 633         $submission = false;
 634         $group = false;
 635         $this->get_group_and_submission($row->id, $group, $submission, -1);
 636         if ($group) {
 637             return $group->name;
 638         } else if ($this->assignment->get_instance()->preventsubmissionnotingroup) {
 639             $usergroups = $this->assignment->get_all_groups($row->id);
 640             if (count($usergroups) > 1) {
 641                 return get_string('multipleteamsgrader', 'assign');
 642             } else {
 643                 return get_string('noteamgrader', 'assign');
 644             }
 645         }
 646         return get_string('defaultteam', 'assign');
 647     }
 648
 649     /**
 650      * Use a static cache to try and reduce DB calls.
 651      *
 652      * @param int $userid The user id for this submission
 653      * @param int $group The groupid (returned)
 654      * @param stdClass|false $submission The stdClass submission or false (returned)
 655      * @param int $attemptnumber Return a specific attempt number (-1 for latest)
 656      */
 657     protected function get_group_and_submission($userid, &$group, &$submission, $attemptnumber) {
 658         $group = false;
 659         if (isset($this->submissiongroups[$userid])) {
 660             $group = $this->submissiongroups[$userid];
 661         } else {
 662             $group = $this->assignment->get_submission_group($userid, false);
 663             $this->submissiongroups[$userid] = $group;
 664         }
 665
 666         $groupid = 0;
 667         if ($group) {
 668             $groupid = $group->id;
 669         }
 670
 671         // Static cache is keyed by groupid and attemptnumber.
 672         // We may need both the latest and previous attempt in the same page.
 673         if (isset($this->groupsubmissions[$groupid . ':' . $attemptnumber])) {
 674             $submission = $this->groupsubmissions[$groupid . ':' . $attemptnumber];
 675         } else {
 676             $submission = $this->assignment->get_group_submission($userid, $groupid, false, $attemptnumber);
 677             $this->groupsubmissions[$groupid . ':' . $attemptnumber] = $submission;
 678         }
 679     }
 680
 681     /**
 682      * Format a list of outcomes.
 683      *
 684      * @param stdClass $row
 685      * @return string
 686      */
 687     public function col_outcomes(stdClass $row) {
 688         $outcomes = '';
 689         foreach ($this->gradinginfo->outcomes as $index => $outcome) {
 690             $options = make_grades_menu(-$outcome->scaleid);
 691
 692             $options[0] = get_string('nooutcome', 'grades');
 693             if ($this->quickgrading && !($outcome->grades[$row->userid]->locked)) {
 694                 $select = '<select name="outcome_' . $index . '_' . $row->userid . '" class="quickgrade">';
 695                 foreach ($options as $optionindex => $optionvalue) {
 696                     $selected = '';
 697                     if ($outcome->grades[$row->userid]->grade == $optionindex) {
 698                         $selected = 'selected="selected"';
 699                     }
 700                     $select .= '<option value="' . $optionindex . '"' . $selected . '>' . $optionvalue . '</option>';
 701                 }
 702                 $select .= '</select>';
 703                 $outcomes .= $this->output->container($outcome->name . ': ' . $select, 'outcome');
 704             } else {
 705                 $name = $outcome->name . ': ' . $options[$outcome->grades[$row->userid]->grade];
 706                 if ($this->is_downloading()) {
 707                     $outcomes .= $name;
 708                 } else {
 709                     $outcomes .= $this->output->container($name, 'outcome');
 710                 }
 711             }
 712         }
 713
 714         return $outcomes;
 715     }
 716
 717
 718     /**
 719      * Format a user picture for display.
 720      *
 721      * @param stdClass $row
 722      * @return string
 723      */
 724     public function col_picture(stdClass $row) {
 725         return $this->output->user_picture($row);
 726     }
 727
 728     /**
 729      * Format a user record for display (link to profile).
 730      *
 731      * @param stdClass $row
 732      * @return string
 733      */
 734     public function col_fullname($row) {
 735         if (!$this->is_downloading()) {
 736             $courseid = $this->assignment->get_course()->id;
 737             $link= new moodle_url('/user/view.php', array('id' =>$row->id, 'course'=>$courseid));
 738             $fullname = $this->output->action_link($link, $this->assignment->fullname($row));
 739         } else {
 740             $fullname = $this->assignment->fullname($row);
 741         }
 742
 743         if (!$this->assignment->is_active_user($row->id)) {
 744             $suspendedstring = get_string('userenrolmentsuspended', 'grades');
 745             $fullname .= ' ' . html_writer::empty_tag('img', array('src' => $this->output->pix_url('i/enrolmentsuspended'),
 746                 'title' => $suspendedstring, 'alt' => $suspendedstring, 'class' => 'usersuspendedicon'));
 747             $fullname = html_writer::tag('span', $fullname, array('class' => 'usersuspended'));
 748         }
 749         return $fullname;
 750     }
 751
 752     /**
 753      * Insert a checkbox for selecting the current row for batch operations.
 754      *
 755      * @param stdClass $row
 756      * @return string
 757      */
 758     public function col_select(stdClass $row) {
 759         $selectcol = '<label class="accesshide" for="selectuser_' . $row->userid . '">';
 760         $selectcol .= get_string('selectuser', 'assign', $this->assignment->fullname($row));
 761         $selectcol .= '</label>';
 762         $selectcol .= '<input type="checkbox"
 763                               id="selectuser_' . $row->userid . '"
 764                               name="selectedusers"
 765                               value="' . $row->userid . '"/>';
 766         $selectcol .= '<input type="hidden"
 767                               name="grademodified_' . $row->userid . '"
 768                               value="' . $row->timemarked . '"/>';
 769         return $selectcol;
 770     }
 771
 772     /**
 773      * Return a users grades from the listing of all grade data for this assignment.
 774      *
 775      * @param int $userid
 776      * @return mixed stdClass or false
 777      */
 778     private function get_gradebook_data_for_user($userid) {
 779         if (isset($this->gradinginfo->items[0]) && $this->gradinginfo->items[0]->grades[$userid]) {
 780             return $this->gradinginfo->items[0]->grades[$userid];
 781         }
 782         return false;
 783     }
 784
 785     /**
 786      * Format a column of data for display.
 787      *
 788      * @param stdClass $row
 789      * @return string
 790      */
 791     public function col_gradecanbechanged(stdClass $row) {
 792         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 793         if ($gradingdisabled) {
 794             return get_string('no');
 795         } else {
 796             return get_string('yes');
 797         }
 798     }
 799
 800     /**
 801      * Format a column of data for display
 802      *
 803      * @param stdClass $row
 804      * @return string
 805      */
 806     public function col_grademax(stdClass $row) {
 807         return format_float($this->assignment->get_instance()->grade, 2);
 808     }
 809
 810     /**
 811      * Format a column of data for display.
 812      *
 813      * @param stdClass $row
 814      * @return string
 815      */
 816     public function col_grade(stdClass $row) {
 817         $o = '';
 818
 819         $link = '';
 820         $separator = $this->output->spacer(array(), true);
 821         $grade = '';
 822         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 823
 824         if (!$this->is_downloading() && $this->hasgrade) {
 825             $name = $this->assignment->fullname($row);
 826             $icon = $this->output->pix_icon('gradefeedback',
 827                                             get_string('gradeuser', 'assign', $name),
 828                                             'mod_assign');
 829             $urlparams = array('id' => $this->assignment->get_course_module()->id,
 830                                'rownum'=>$this->rownum,
 831                                'action' => 'grade',
 832                                'useridlistid' => $this->assignment->get_useridlist_key_id());
 833             $url = new moodle_url('/mod/assign/view.php', $urlparams);
 834             $link = $this->output->action_link($url, $icon);
 835             $grade .= $link . $separator;
 836         }
 837
 838         $grade .= $this->display_grade($row->grade,
 839                                        $this->quickgrading && !$gradingdisabled,
 840                                        $row->userid,
 841                                        $row->timemarked);
 842
 843         return $grade;
 844     }
 845
 846     /**
 847      * Format a column of data for display.
 848      *
 849      * @param stdClass $row
 850      * @return string
 851      */
 852     public function col_finalgrade(stdClass $row) {
 853         $o = '';
 854
 855         $grade = $this->get_gradebook_data_for_user($row->userid);
 856         if ($grade) {
 857             $o = $this->display_grade($grade->grade, false, $row->userid, $row->timemarked);
 858         }
 859
 860         return $o;
 861     }
 862
 863     /**
 864      * Format a column of data for display.
 865      *
 866      * @param stdClass $row
 867      * @return string
 868      */
 869     public function col_timemarked(stdClass $row) {
 870         $o = '-';
 871
 872         if ($row->timemarked && $row->grade !== null && $row->grade >= 0) {
 873             $o = userdate($row->timemarked);
 874         }
 875         if ($row->timemarked && $this->is_downloading()) {
 876             // Force it for downloads as it affects import.
 877             $o = userdate($row->timemarked);
 878         }
 879
 880         return $o;
 881     }
 882
 883     /**
 884      * Format a column of data for display.
 885      *
 886      * @param stdClass $row
 887      * @return string
 888      */
 889     public function col_timesubmitted(stdClass $row) {
 890         $o = '-';
 891
 892         $group = false;
 893         $submission = false;
 894         $this->get_group_and_submission($row->id, $group, $submission, -1);
 895         if ($submission && $submission->timemodified && $submission->status != ASSIGN_SUBMISSION_STATUS_NEW) {
 896             $o = userdate($submission->timemodified);
 897         } else if ($row->timesubmitted) {
 898             $o = userdate($row->timesubmitted);
 899         }
 900
 901         return $o;
 902     }
 903
 904     /**
 905      * Format a column of data for display
 906      *
 907      * @param stdClass $row
 908      * @return string
 909      */
 910     public function col_status(stdClass $row) {
 911         $o = '';
 912
 913         $instance = $this->assignment->get_instance();
 914
 915         $due = $instance->duedate;
 916         if ($row->extensionduedate) {
 917             $due = $row->extensionduedate;
 918         }
 919
 920         $group = false;
 921         $submission = false;
 922         $this->get_group_and_submission($row->id, $group, $submission, -1);
 923
 924         if ($instance->teamsubmission && !$group && !$instance->preventsubmissionnotingroup) {
 925             $group = true;
 926         }
 927
 928         if ($group && $submission) {
 929             $timesubmitted = $submission->timemodified;
 930             $status = $submission->status;
 931         } else {
 932             $timesubmitted = $row->timesubmitted;
 933             $status = $row->status;
 934         }
 935
 936         if ($this->assignment->is_any_submission_plugin_enabled()) {
 937
 938             $o .= $this->output->container(get_string('submissionstatus_' . $status, 'assign'),
 939                                            array('class'=>'submissionstatus' .$status));
 940             if ($due && $timesubmitted > $due) {
 941                 $usertime = format_time($timesubmitted - $due);
 942                 $latemessage = get_string('submittedlateshort',
 943                                           'assign',
 944                                           $usertime);
 945                 $o .= $this->output->container($latemessage, 'latesubmission');
 946             }
 947             if ($row->locked) {
 948                 $lockedstr = get_string('submissionslockedshort', 'assign');
 949                 $o .= $this->output->container($lockedstr, 'lockedsubmission');
 950             }
 951
 952             // Add status of "grading" if markflow is not enabled.
 953             if (!$instance->markingworkflow) {
 954                 if ($row->grade !== null && $row->grade >= 0) {
 955                     $o .= $this->output->container(get_string('graded', 'assign'), 'submissiongraded');
 956                 } else if (!$timesubmitted) {
 957                     $now = time();
 958                     if ($due && ($now > $due)) {
 959                         $overduestr = get_string('overdue', 'assign', format_time($now - $due));
 960                         $o .= $this->output->container($overduestr, 'overduesubmission');
 961                     }
 962                 }
 963             }
 964         }
 965
 966         if ($instance->markingworkflow) {
 967             $o .= $this->col_workflowstatus($row);
 968         }
 969         if ($row->extensionduedate) {
 970             $userdate = userdate($row->extensionduedate);
 971             $extensionstr = get_string('userextensiondate', 'assign', $userdate);
 972             $o .= $this->output->container($extensionstr, 'extensiondate');
 973         }
 974
 975         if ($this->is_downloading()) {
 976             $o = strip_tags(rtrim(str_replace('</div>', ' - ', $o), '- '));
 977         }
 978
 979         return $o;
 980     }
 981
 982     /**
 983      * Format a column of data for display.
 984      *
 985      * @param stdClass $row
 986      * @return string
 987      */
 988     public function col_userid(stdClass $row) {
 989         global $USER;
 990
 991         $edit = '';
 992
 993         $actions = array();
 994
 995         $urlparams = array('id'=>$this->assignment->get_course_module()->id,
 996                            'rownum'=>$this->rownum,
 997                            'action' => 'grade',
 998                            'useridlistid' => $this->assignment->get_useridlist_key_id());
 999         $url = new moodle_url('/mod/assign/view.php', $urlparams);
1000         $noimage = null;
1001
1002         if (!$row->grade) {
1003             $description = get_string('grade');
1004         } else {
1005             $description = get_string('updategrade', 'assign');
1006         }
1007         $actions['grade'] = new action_menu_link_secondary(
1008             $url,
1009             $noimage,
1010             $description
1011         );
1012
1013         // Everything we need is in the row.
1014         $submission = $row;
1015         $flags = $row;
1016         if ($this->assignment->get_instance()->teamsubmission) {
1017             // Use the cache for this.
1018             $submission = false;
1019             $group = false;
1020             $this->get_group_and_submission($row->id, $group, $submission, -1);
1021         }
1022
1023         $submissionsopen = $this->assignment->submissions_open($row->id,
1024                                                                true,
1025                                                                $submission,
1026                                                                $flags,
1027                                                                $this->gradinginfo);
1028         $caneditsubmission = $this->assignment->can_edit_submission($row->id, $USER->id);
1029
1030         // Hide for offline assignments.
1031         if ($this->assignment->is_any_submission_plugin_enabled()) {
1032             if (!$row->status ||
1033                     $row->status == ASSIGN_SUBMISSION_STATUS_DRAFT ||
1034                     !$this->assignment->get_instance()->submissiondrafts) {
1035
1036                 if (!$row->locked) {
1037                     $urlparams = array('id' => $this->assignment->get_course_module()->id,
1038                                        'userid'=>$row->id,
1039                                        'action'=>'lock',
1040                                        'sesskey'=>sesskey(),
1041                                        'page'=>$this->currpage);
1042                     $url = new moodle_url('/mod/assign/view.php', $urlparams);
1043
1044                     $description = get_string('preventsubmissionsshort', 'assign');
1045                     $actions['lock'] = new action_menu_link_secondary(
1046                         $url,
1047                         $noimage,
1048                         $description
1049                     );
1050                 } else {
1051                     $urlparams = array('id' => $this->assignment->get_course_module()->id,
1052                                        'userid'=>$row->id,
1053                                        'action'=>'unlock',
1054                                        'sesskey'=>sesskey(),
1055                                        'page'=>$this->currpage);
1056                     $url = new moodle_url('/mod/assign/view.php', $urlparams);
1057                     $description = get_string('allowsubmissionsshort', 'assign');
1058                     $actions['unlock'] = new action_menu_link_secondary(
1059                         $url,
1060                         $noimage,
1061                         $description
1062                     );
1063                 }
1064             }
1065
1066             if ($submissionsopen &&
1067                     $USER->id != $row->id &&
1068                     $caneditsubmission) {
1069                 $urlparams = array('id' => $this->assignment->get_course_module()->id,
1070                                    'userid'=>$row->id,
1071                                    'action'=>'editsubmission',
1072                                    'sesskey'=>sesskey(),
1073                                    'page'=>$this->currpage);
1074                 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1075                 $description = get_string('editsubmission', 'assign');
1076                 $actions['editsubmission'] = new action_menu_link_secondary(
1077                     $url,
1078                     $noimage,
1079                     $description
1080                 );
1081             }
1082         }
1083         if (($this->assignment->get_instance()->duedate ||
1084                 $this->assignment->get_instance()->cutoffdate) &&
1085                 $this->hasgrantextension) {
1086              $urlparams = array('id' => $this->assignment->get_course_module()->id,
1087                                 'userid' => $row->id,
1088                                 'action' => 'grantextension',
1089                                 'sesskey' => sesskey(),
1090                                 'page' => $this->currpage);
1091              $url = new moodle_url('/mod/assign/view.php', $urlparams);
1092              $description = get_string('grantextension', 'assign');
1093              $actions['grantextension'] = new action_menu_link_secondary(
1094                  $url,
1095                  $noimage,
1096                  $description
1097              );
1098         }
1099         if ($row->status == ASSIGN_SUBMISSION_STATUS_SUBMITTED &&
1100                 $this->assignment->get_instance()->submissiondrafts) {
1101             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1102                                'userid'=>$row->id,
1103                                'action'=>'reverttodraft',
1104                                'sesskey'=>sesskey(),
1105                                'page'=>$this->currpage);
1106             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1107             $description = get_string('reverttodraftshort', 'assign');
1108             $actions['reverttodraft'] = new action_menu_link_secondary(
1109                 $url,
1110                 $noimage,
1111                 $description
1112             );
1113         }
1114         if ($row->status == ASSIGN_SUBMISSION_STATUS_DRAFT &&
1115                 $this->assignment->get_instance()->submissiondrafts &&
1116                 $caneditsubmission &&
1117                 $submissionsopen &&
1118                 $row->id != $USER->id) {
1119             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1120                                'userid'=>$row->id,
1121                                'action'=>'submitotherforgrading',
1122                                'sesskey'=>sesskey(),
1123                                'page'=>$this->currpage);
1124             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1125             $description = get_string('submitforgrading', 'assign');
1126             $actions['submitforgrading'] = new action_menu_link_secondary(
1127                 $url,
1128                 $noimage,
1129                 $description
1130             );
1131         }
1132
1133         $ismanual = $this->assignment->get_instance()->attemptreopenmethod == ASSIGN_ATTEMPT_REOPEN_METHOD_MANUAL;
1134         $hassubmission = !empty($row->status);
1135         $notreopened = $hassubmission && $row->status != ASSIGN_SUBMISSION_STATUS_REOPENED;
1136         $isunlimited = $this->assignment->get_instance()->maxattempts == ASSIGN_UNLIMITED_ATTEMPTS;
1137         $hasattempts = $isunlimited || $row->attemptnumber < $this->assignment->get_instance()->maxattempts - 1;
1138
1139         if ($ismanual && $hassubmission && $notreopened && $hasattempts) {
1140             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1141                                'userid'=>$row->id,
1142                                'action'=>'addattempt',
1143                                'sesskey'=>sesskey(),
1144                                'page'=>$this->currpage);
1145             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1146             $description = get_string('addattempt', 'assign');
1147             $actions['addattempt'] = new action_menu_link_secondary(
1148                 $url,
1149                 $noimage,
1150                 $description
1151             );
1152         }
1153
1154         $menu = new action_menu();
1155         $menu->set_owner_selector('.gradingtable-actionmenu');
1156         $menu->set_alignment(action_menu::TL, action_menu::BL);
1157         $menu->set_constraint('.gradingtable > .no-overflow');
1158         $menu->set_menu_trigger(get_string('edit'));
1159         foreach ($actions as $action) {
1160             $menu->add($action);
1161         }
1162
1163         // Prioritise the menu ahead of all other actions.
1164         $menu->prioritise = true;
1165
1166         $edit .= $this->output->render($menu);
1167
1168         return $edit;
1169     }
1170
1171     /**
1172      * Write the plugin summary with an optional link to view the full feedback/submission.
1173      *
1174      * @param assign_plugin $plugin Submission plugin or feedback plugin
1175      * @param stdClass $item Submission or grade
1176      * @param string $returnaction The return action to pass to the
1177      *                             view_submission page (the current page)
1178      * @param string $returnparams The return params to pass to the view_submission
1179      *                             page (the current page)
1180      * @return string The summary with an optional link
1181      */
1182     private function format_plugin_summary_with_link(assign_plugin $plugin,
1183                                                      stdClass $item,
1184                                                      $returnaction,
1185                                                      $returnparams) {
1186         $link = '';
1187         $showviewlink = false;
1188
1189         $summary = $plugin->view_summary($item, $showviewlink);
1190         $separator = '';
1191         if ($showviewlink) {
1192             $viewstr = get_string('view' . substr($plugin->get_subtype(), strlen('assign')), 'assign');
1193             $icon = $this->output->pix_icon('t/preview', $viewstr);
1194             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1195                                                      'sid'=>$item->id,
1196                                                      'gid'=>$item->id,
1197                                                      'plugin'=>$plugin->get_type(),
1198                                                      'action'=>'viewplugin' . $plugin->get_subtype(),
1199                                                      'returnaction'=>$returnaction,
1200                                                      'returnparams'=>http_build_query($returnparams));
1201             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1202             $link = $this->output->action_link($url, $icon);
1203             $separator = $this->output->spacer(array(), true);
1204         }
1205
1206         return $link . $separator . $summary;
1207     }
1208
1209
1210     /**
1211      * Format the submission and feedback columns.
1212      *
1213      * @param string $colname The column name
1214      * @param stdClass $row The submission row
1215      * @return mixed string or NULL
1216      */
1217     public function other_cols($colname, $row) {
1218         // For extra user fields the result is already in $row.
1219         if (empty($this->plugincache[$colname])) {
1220             return $row->$colname;
1221         }
1222
1223         // This must be a plugin field.
1224         $plugincache = $this->plugincache[$colname];
1225
1226         $plugin = $plugincache[0];
1227
1228         $field = null;
1229         if (isset($plugincache[1])) {
1230             $field = $plugincache[1];
1231         }
1232
1233         if ($plugin->is_visible() && $plugin->is_enabled()) {
1234             if ($plugin->get_subtype() == 'assignsubmission') {
1235                 if ($this->assignment->get_instance()->teamsubmission) {
1236                     $group = false;
1237                     $submission = false;
1238
1239                     $this->get_group_and_submission($row->id, $group, $submission, -1);
1240                     if ($submission) {
1241                         if ($submission->status == ASSIGN_SUBMISSION_STATUS_REOPENED) {
1242                             // For a newly reopened submission - we want to show the previous submission in the table.
1243                             $this->get_group_and_submission($row->id, $group, $submission, $submission->attemptnumber-1);
1244                         }
1245                         if (isset($field)) {
1246                             return $plugin->get_editor_text($field, $submission->id);
1247                         }
1248                         return $this->format_plugin_summary_with_link($plugin,
1249                                                                       $submission,
1250                                                                       'grading',
1251                                                                       array());
1252                     }
1253                 } else if ($row->submissionid) {
1254                     if ($row->status == ASSIGN_SUBMISSION_STATUS_REOPENED) {
1255                         // For a newly reopened submission - we want to show the previous submission in the table.
1256                         $submission = $this->assignment->get_user_submission($row->userid, false, $row->attemptnumber - 1);
1257                     } else {
1258                         $submission = new stdClass();
1259                         $submission->id = $row->submissionid;
1260                         $submission->timecreated = $row->firstsubmission;
1261                         $submission->timemodified = $row->timesubmitted;
1262                         $submission->assignment = $this->assignment->get_instance()->id;
1263                         $submission->userid = $row->userid;
1264                         $submission->attemptnumber = $row->attemptnumber;
1265                     }
1266                     // Field is used for only for import/export and refers the the fieldname for the text editor.
1267                     if (isset($field)) {
1268                         return $plugin->get_editor_text($field, $submission->id);
1269                     }
1270                     return $this->format_plugin_summary_with_link($plugin,
1271                                                                   $submission,
1272                                                                   'grading',
1273                                                                   array());
1274                 }
1275             } else {
1276                 $grade = null;
1277                 if (isset($field)) {
1278                     return $plugin->get_editor_text($field, $row->gradeid);
1279                 }
1280
1281                 if ($row->gradeid) {
1282                     $grade = new stdClass();
1283                     $grade->id = $row->gradeid;
1284                     $grade->timecreated = $row->firstmarked;
1285                     $grade->timemodified = $row->timemarked;
1286                     $grade->assignment = $this->assignment->get_instance()->id;
1287                     $grade->userid = $row->userid;
1288                     $grade->grade = $row->grade;
1289                     $grade->mailed = $row->mailed;
1290                     $grade->attemptnumber = $row->attemptnumber;
1291                 }
1292                 if ($this->quickgrading && $plugin->supports_quickgrading()) {
1293                     return $plugin->get_quickgrading_html($row->userid, $grade);
1294                 } else if ($grade) {
1295                     return $this->format_plugin_summary_with_link($plugin,
1296                                                                   $grade,
1297                                                                   'grading',
1298                                                                   array());
1299                 }
1300             }
1301         }
1302         return '';
1303     }
1304
1305     /**
1306      * Using the current filtering and sorting - load all rows and return a single column from them.
1307      *
1308      * @param string $columnname The name of the raw column data
1309      * @return array of data
1310      */
1311     public function get_column_data($columnname) {
1312         $this->setup();
1313         $this->currpage = 0;
1314         $this->query_db($this->tablemaxrows);
1315         $result = array();
1316         foreach ($this->rawdata as $row) {
1317             $result[] = $row->$columnname;
1318         }
1319         return $result;
1320     }
1321
1322     /**
1323      * Return things to the renderer.
1324      *
1325      * @return string the assignment name
1326      */
1327     public function get_assignment_name() {
1328         return $this->assignment->get_instance()->name;
1329     }
1330
1331     /**
1332      * Return things to the renderer.
1333      *
1334      * @return int the course module id
1335      */
1336     public function get_course_module_id() {
1337         return $this->assignment->get_course_module()->id;
1338     }
1339
1340     /**
1341      * Return things to the renderer.
1342      *
1343      * @return int the course id
1344      */
1345     public function get_course_id() {
1346         return $this->assignment->get_course()->id;
1347     }
1348
1349     /**
1350      * Return things to the renderer.
1351      *
1352      * @return stdClass The course context
1353      */
1354     public function get_course_context() {
1355         return $this->assignment->get_course_context();
1356     }
1357
1358     /**
1359      * Return things to the renderer.
1360      *
1361      * @return bool Does this assignment accept submissions
1362      */
1363     public function submissions_enabled() {
1364         return $this->assignment->is_any_submission_plugin_enabled();
1365     }
1366
1367     /**
1368      * Return things to the renderer.
1369      *
1370      * @return bool Can this user view all grades (the gradebook)
1371      */
1372     public function can_view_all_grades() {
1373         $context = $this->assignment->get_course_context();
1374         return has_capability('gradereport/grader:view', $context) &&
1375                has_capability('moodle/grade:viewall', $context);
1376     }
1377
1378     /**
1379      * Always return a valid sort - even if the userid column is missing.
1380      * @return array column name => SORT_... constant.
1381      */
1382     public function get_sort_columns() {
1383         $result = parent::get_sort_columns();
1384         $result = array_merge($result, array('userid' => SORT_ASC));
1385         return $result;
1386     }
1387
1388     /**
1389      * Override the table show_hide_link to not show for select column.
1390      *
1391      * @param string $column the column name, index into various names.
1392      * @param int $index numerical index of the column.
1393      * @return string HTML fragment.
1394      */
1395     protected function show_hide_link($column, $index) {
1396         if ($index > 0 || !$this->hasgrade) {
1397             return parent::show_hide_link($column, $index);
1398         }
1399         return '';
1400     }
1401
1402     /**
1403      * Overides setup to ensure it will only run a single time.
1404      */
1405     public function setup() {
1406         // Check if the setup function has been called before, we should not run it twice.
1407         // If we do the sortorder of the table will be broken.
1408         if (!empty($this->setup)) {
1409             return;
1410         }
1411         parent::setup();
1412     }
1413 }