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             $headers[] = get_string('fullname');
 275
 276             // Participant # details if can view real identities.
 277             if ($this->assignment->is_blind_marking()) {
 278                 if (!$this->is_downloading()) {
 279                     $columns[] = 'recordid';
 280                     $headers[] = get_string('recordid', 'assign');
 281                 }
 282             }
 283
 284             foreach ($extrauserfields as $extrafield) {
 285                 $columns[] = $extrafield;
 286                 $headers[] = get_user_field_name($extrafield);
 287             }
 288         } else {
 289             // Record ID.
 290             $columns[] = 'recordid';
 291             $headers[] = get_string('recordid', 'assign');
 292         }
 293
 294         // Submission status.
 295         $columns[] = 'status';
 296         $headers[] = get_string('status', 'assign');
 297
 298         // Team submission columns.
 299         if ($assignment->get_instance()->teamsubmission) {
 300             $columns[] = 'team';
 301             $headers[] = get_string('submissionteam', 'assign');
 302         }
 303         // Allocated marker.
 304         if ($this->assignment->get_instance()->markingworkflow &&
 305             $this->assignment->get_instance()->markingallocation &&
 306             has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {
 307             // Add a column for the allocated marker.
 308             $columns[] = 'allocatedmarker';
 309             $headers[] = get_string('marker', 'assign');
 310         }
 311         // Grade.
 312         $columns[] = 'grade';
 313         $headers[] = get_string('grade');
 314         if ($this->is_downloading()) {
 315             if ($this->assignment->get_instance()->grade >= 0) {
 316                 $columns[] = 'grademax';
 317                 $headers[] = get_string('maxgrade', 'assign');
 318             } else {
 319                 // This is a custom scale.
 320                 $columns[] = 'scale';
 321                 $headers[] = get_string('scale', 'assign');
 322             }
 323
 324             if ($this->assignment->get_instance()->markingworkflow) {
 325                 // Add a column for the marking workflow state.
 326                 $columns[] = 'workflowstate';
 327                 $headers[] = get_string('markingworkflowstate', 'assign');
 328             }
 329             // Add a column for the list of valid marking workflow states.
 330             $columns[] = 'gradecanbechanged';
 331             $headers[] = get_string('gradecanbechanged', 'assign');
 332         }
 333         if (!$this->is_downloading() && $this->hasgrade) {
 334             // We have to call this column userid so we can use userid as a default sortable column.
 335             $columns[] = 'userid';
 336             $headers[] = get_string('edit');
 337         }
 338
 339         // Submission plugins.
 340         if ($assignment->is_any_submission_plugin_enabled()) {
 341             $columns[] = 'timesubmitted';
 342             $headers[] = get_string('lastmodifiedsubmission', 'assign');
 343
 344             foreach ($this->assignment->get_submission_plugins() as $plugin) {
 345                 if ($this->is_downloading()) {
 346                     if ($plugin->is_visible() && $plugin->is_enabled()) {
 347                         foreach ($plugin->get_editor_fields() as $field => $description) {
 348                             $index = 'plugin' . count($this->plugincache);
 349                             $this->plugincache[$index] = array($plugin, $field);
 350                             $columns[] = $index;
 351                             $headers[] = $plugin->get_name();
 352                         }
 353                     }
 354                 } else {
 355                     if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 356                         $index = 'plugin' . count($this->plugincache);
 357                         $this->plugincache[$index] = array($plugin);
 358                         $columns[] = $index;
 359                         $headers[] = $plugin->get_name();
 360                     }
 361                 }
 362             }
 363         }
 364
 365         // Time marked.
 366         $columns[] = 'timemarked';
 367         $headers[] = get_string('lastmodifiedgrade', 'assign');
 368
 369         // Feedback plugins.
 370         foreach ($this->assignment->get_feedback_plugins() as $plugin) {
 371             if ($this->is_downloading()) {
 372                 if ($plugin->is_visible() && $plugin->is_enabled()) {
 373                     foreach ($plugin->get_editor_fields() as $field => $description) {
 374                         $index = 'plugin' . count($this->plugincache);
 375                         $this->plugincache[$index] = array($plugin, $field);
 376                         $columns[] = $index;
 377                         $headers[] = $description;
 378                     }
 379                 }
 380             } else if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 381                 $index = 'plugin' . count($this->plugincache);
 382                 $this->plugincache[$index] = array($plugin);
 383                 $columns[] = $index;
 384                 $headers[] = $plugin->get_name();
 385             }
 386         }
 387
 388         // Exclude 'Final grade' column in downloaded grading worksheets.
 389         if (!$this->is_downloading()) {
 390             // Final grade.
 391             $columns[] = 'finalgrade';
 392             $headers[] = get_string('finalgrade', 'grades');
 393         }
 394
 395         // Load the grading info for all users.
 396         $this->gradinginfo = grade_get_grades($this->assignment->get_course()->id,
 397                                               'mod',
 398                                               'assign',
 399                                               $this->assignment->get_instance()->id,
 400                                               $users);
 401
 402         if (!empty($CFG->enableoutcomes) && !empty($this->gradinginfo->outcomes)) {
 403             $columns[] = 'outcomes';
 404             $headers[] = get_string('outcomes', 'grades');
 405         }
 406
 407         // Set the columns.
 408         $this->define_columns($columns);
 409         $this->define_headers($headers);
 410         foreach ($extrauserfields as $extrafield) {
 411              $this->column_class($extrafield, $extrafield);
 412         }
 413         $this->no_sorting('recordid');
 414         $this->no_sorting('finalgrade');
 415         $this->no_sorting('userid');
 416         $this->no_sorting('select');
 417         $this->no_sorting('outcomes');
 418
 419         if ($assignment->get_instance()->teamsubmission) {
 420             $this->no_sorting('team');
 421         }
 422
 423         $plugincolumnindex = 0;
 424         foreach ($this->assignment->get_submission_plugins() as $plugin) {
 425             if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 426                 $submissionpluginindex = 'plugin' . $plugincolumnindex++;
 427                 $this->no_sorting($submissionpluginindex);
 428             }
 429         }
 430         foreach ($this->assignment->get_feedback_plugins() as $plugin) {
 431             if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 432                 $feedbackpluginindex = 'plugin' . $plugincolumnindex++;
 433                 $this->no_sorting($feedbackpluginindex);
 434             }
 435         }
 436
 437         // When there is no data we still want the column headers printed in the csv file.
 438         if ($this->is_downloading()) {
 439             $this->start_output();
 440         }
 441     }
 442
 443     /**
 444      * Before adding each row to the table make sure rownum is incremented.
 445      *
 446      * @param array $row row of data from db used to make one row of the table.
 447      * @return array one row for the table
 448      */
 449     public function format_row($row) {
 450         if ($this->rownum < 0) {
 451             $this->rownum = $this->currpage * $this->pagesize;
 452         } else {
 453             $this->rownum += 1;
 454         }
 455
 456         return parent::format_row($row);
 457     }
 458
 459     /**
 460      * Add a column with an ID that uniquely identifies this user in this assignment.
 461      *
 462      * @param stdClass $row
 463      * @return string
 464      */
 465     public function col_recordid(stdClass $row) {
 466         return get_string('hiddenuser', 'assign') .
 467                $this->assignment->get_uniqueid_for_user($row->userid);
 468     }
 469
 470
 471     /**
 472      * Add the userid to the row class so it can be updated via ajax.
 473      *
 474      * @param stdClass $row The row of data
 475      * @return string The row class
 476      */
 477     public function get_row_class($row) {
 478         return 'user' . $row->userid;
 479     }
 480
 481     /**
 482      * Return the number of rows to display on a single page.
 483      *
 484      * @return int The number of rows per page
 485      */
 486     public function get_rows_per_page() {
 487         return $this->perpage;
 488     }
 489
 490     /**
 491      * list current marking workflow state
 492      *
 493      * @param stdClass $row
 494      * @return string
 495      */
 496     public function col_workflowstatus(stdClass $row) {
 497         $o = '';
 498
 499         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 500         // The function in the assignment keeps a static cache of this list of states.
 501         $workflowstates = $this->assignment->get_marking_workflow_states_for_current_user();
 502         $workflowstate = $row->workflowstate;
 503         if (empty($workflowstate)) {
 504             $workflowstate = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED;
 505         }
 506         if ($this->quickgrading && !$gradingdisabled) {
 507             $notmarked = get_string('markingworkflowstatenotmarked', 'assign');
 508             $name = 'quickgrade_' . $row->id . '_workflowstate';
 509             $o .= html_writer::select($workflowstates, $name, $workflowstate, array('' => $notmarked));
 510             // Check if this user is a marker that can't manage allocations and doesn't have the marker column added.
 511             if ($this->assignment->get_instance()->markingworkflow &&
 512                 $this->assignment->get_instance()->markingallocation &&
 513                 !has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {
 514
 515                 $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 516                 $o .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => $name,
 517                         'value' => $row->allocatedmarker));
 518             }
 519         } else {
 520             $o .= $this->output->container(get_string('markingworkflowstate' . $workflowstate, 'assign'), $workflowstate);
 521         }
 522         return $o;
 523     }
 524
 525     /**
 526      * For download only - list current marking workflow state
 527      *
 528      * @param stdClass $row - The row of data
 529      * @return string The current marking workflow state
 530      */
 531     public function col_workflowstate($row) {
 532         $state = $row->workflowstate;
 533         if (empty($state)) {
 534             $state = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED;
 535         }
 536
 537         return get_string('markingworkflowstate' . $state, 'assign');
 538     }
 539
 540     /**
 541      * list current marker
 542      *
 543      * @param stdClass $row - The row of data
 544      * @return id the user->id of the marker.
 545      */
 546     public function col_allocatedmarker(stdClass $row) {
 547         static $markers = null;
 548         static $markerlist = array();
 549         if ($markers === null) {
 550             list($sort, $params) = users_order_by_sql();
 551             $markers = get_users_by_capability($this->assignment->get_context(), 'mod/assign:grade', '', $sort);
 552             $markerlist[0] = get_string('choosemarker', 'assign');
 553             foreach ($markers as $marker) {
 554                 $markerlist[$marker->id] = fullname($marker);
 555             }
 556         }
 557         if (empty($markerlist)) {
 558             // TODO: add some form of notification here that no markers are available.
 559             return '';
 560         }
 561         if ($this->is_downloading()) {
 562             if (isset($markers[$row->allocatedmarker])) {
 563                 return fullname($markers[$row->allocatedmarker]);
 564             } else {
 565                 return '';
 566             }
 567         }
 568
 569         if ($this->quickgrading && has_capability('mod/assign:manageallocations', $this->assignment->get_context()) &&
 570             (empty($row->workflowstate) ||
 571              $row->workflowstate == ASSIGN_MARKING_WORKFLOW_STATE_INMARKING ||
 572              $row->workflowstate == ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED)) {
 573
 574             $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 575             return  html_writer::select($markerlist, $name, $row->allocatedmarker, false);
 576         } else if (!empty($row->allocatedmarker)) {
 577             $output = '';
 578             if ($this->quickgrading) { // Add hidden field for quickgrading page.
 579                 $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 580                 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>$name, 'value'=>$row->allocatedmarker));
 581             }
 582             $output .= $markerlist[$row->allocatedmarker];
 583             return $output;
 584         }
 585     }
 586     /**
 587      * For download only - list all the valid options for this custom scale.
 588      *
 589      * @param stdClass $row - The row of data
 590      * @return string A list of valid options for the current scale
 591      */
 592     public function col_scale($row) {
 593         global $DB;
 594
 595         if (empty($this->scale)) {
 596             $dbparams = array('id'=>-($this->assignment->get_instance()->grade));
 597             $this->scale = $DB->get_record('scale', $dbparams);
 598         }
 599
 600         if (!empty($this->scale->scale)) {
 601             return implode("\n", explode(',', $this->scale->scale));
 602         }
 603         return '';
 604     }
 605
 606     /**
 607      * Display a grade with scales etc.
 608      *
 609      * @param string $grade
 610      * @param boolean $editable
 611      * @param int $userid The user id of the user this grade belongs to
 612      * @param int $modified Timestamp showing when the grade was last modified
 613      * @return string The formatted grade
 614      */
 615     public function display_grade($grade, $editable, $userid, $modified) {
 616         if ($this->is_downloading()) {
 617             if ($this->assignment->get_instance()->grade >= 0) {
 618                 if ($grade == -1 || $grade === null) {
 619                     return '';
 620                 }
 621                 return format_float($grade, 2);
 622             } else {
 623                 // This is a custom scale.
 624                 $scale = $this->assignment->display_grade($grade, false);
 625                 if ($scale == '-') {
 626                     $scale = '';
 627                 }
 628                 return $scale;
 629             }
 630         }
 631         return $this->assignment->display_grade($grade, $editable, $userid, $modified);
 632     }
 633
 634     /**
 635      * Get the team info for this user.
 636      *
 637      * @param stdClass $row
 638      * @return string The team name
 639      */
 640     public function col_team(stdClass $row) {
 641         $submission = false;
 642         $group = false;
 643         $this->get_group_and_submission($row->id, $group, $submission, -1);
 644         if ($group) {
 645             return $group->name;
 646         } else if ($this->assignment->get_instance()->preventsubmissionnotingroup) {
 647             $usergroups = $this->assignment->get_all_groups($row->id);
 648             if (count($usergroups) > 1) {
 649                 return get_string('multipleteamsgrader', 'assign');
 650             } else {
 651                 return get_string('noteamgrader', 'assign');
 652             }
 653         }
 654         return get_string('defaultteam', 'assign');
 655     }
 656
 657     /**
 658      * Use a static cache to try and reduce DB calls.
 659      *
 660      * @param int $userid The user id for this submission
 661      * @param int $group The groupid (returned)
 662      * @param stdClass|false $submission The stdClass submission or false (returned)
 663      * @param int $attemptnumber Return a specific attempt number (-1 for latest)
 664      */
 665     protected function get_group_and_submission($userid, &$group, &$submission, $attemptnumber) {
 666         $group = false;
 667         if (isset($this->submissiongroups[$userid])) {
 668             $group = $this->submissiongroups[$userid];
 669         } else {
 670             $group = $this->assignment->get_submission_group($userid, false);
 671             $this->submissiongroups[$userid] = $group;
 672         }
 673
 674         $groupid = 0;
 675         if ($group) {
 676             $groupid = $group->id;
 677         }
 678
 679         // Static cache is keyed by groupid and attemptnumber.
 680         // We may need both the latest and previous attempt in the same page.
 681         if (isset($this->groupsubmissions[$groupid . ':' . $attemptnumber])) {
 682             $submission = $this->groupsubmissions[$groupid . ':' . $attemptnumber];
 683         } else {
 684             $submission = $this->assignment->get_group_submission($userid, $groupid, false, $attemptnumber);
 685             $this->groupsubmissions[$groupid . ':' . $attemptnumber] = $submission;
 686         }
 687     }
 688
 689     /**
 690      * Format a list of outcomes.
 691      *
 692      * @param stdClass $row
 693      * @return string
 694      */
 695     public function col_outcomes(stdClass $row) {
 696         $outcomes = '';
 697         foreach ($this->gradinginfo->outcomes as $index => $outcome) {
 698             $options = make_grades_menu(-$outcome->scaleid);
 699
 700             $options[0] = get_string('nooutcome', 'grades');
 701             if ($this->quickgrading && !($outcome->grades[$row->userid]->locked)) {
 702                 $select = '<select name="outcome_' . $index . '_' . $row->userid . '" class="quickgrade">';
 703                 foreach ($options as $optionindex => $optionvalue) {
 704                     $selected = '';
 705                     if ($outcome->grades[$row->userid]->grade == $optionindex) {
 706                         $selected = 'selected="selected"';
 707                     }
 708                     $select .= '<option value="' . $optionindex . '"' . $selected . '>' . $optionvalue . '</option>';
 709                 }
 710                 $select .= '</select>';
 711                 $outcomes .= $this->output->container($outcome->name . ': ' . $select, 'outcome');
 712             } else {
 713                 $name = $outcome->name . ': ' . $options[$outcome->grades[$row->userid]->grade];
 714                 if ($this->is_downloading()) {
 715                     $outcomes .= $name;
 716                 } else {
 717                     $outcomes .= $this->output->container($name, 'outcome');
 718                 }
 719             }
 720         }
 721
 722         return $outcomes;
 723     }
 724
 725
 726     /**
 727      * Format a user picture for display.
 728      *
 729      * @param stdClass $row
 730      * @return string
 731      */
 732     public function col_picture(stdClass $row) {
 733         return $this->output->user_picture($row);
 734     }
 735
 736     /**
 737      * Format a user record for display (link to profile).
 738      *
 739      * @param stdClass $row
 740      * @return string
 741      */
 742     public function col_fullname($row) {
 743         if (!$this->is_downloading()) {
 744             $courseid = $this->assignment->get_course()->id;
 745             $link= new moodle_url('/user/view.php', array('id' =>$row->id, 'course'=>$courseid));
 746             $fullname = $this->output->action_link($link, $this->assignment->fullname($row));
 747         } else {
 748             $fullname = $this->assignment->fullname($row);
 749         }
 750
 751         if (!$this->assignment->is_active_user($row->id)) {
 752             $suspendedstring = get_string('userenrolmentsuspended', 'grades');
 753             $fullname .= ' ' . html_writer::empty_tag('img', array('src' => $this->output->pix_url('i/enrolmentsuspended'),
 754                 'title' => $suspendedstring, 'alt' => $suspendedstring, 'class' => 'usersuspendedicon'));
 755             $fullname = html_writer::tag('span', $fullname, array('class' => 'usersuspended'));
 756         }
 757         return $fullname;
 758     }
 759
 760     /**
 761      * Insert a checkbox for selecting the current row for batch operations.
 762      *
 763      * @param stdClass $row
 764      * @return string
 765      */
 766     public function col_select(stdClass $row) {
 767         $selectcol = '<label class="accesshide" for="selectuser_' . $row->userid . '">';
 768         $selectcol .= get_string('selectuser', 'assign', $this->assignment->fullname($row));
 769         $selectcol .= '</label>';
 770         $selectcol .= '<input type="checkbox"
 771                               id="selectuser_' . $row->userid . '"
 772                               name="selectedusers"
 773                               value="' . $row->userid . '"/>';
 774         $selectcol .= '<input type="hidden"
 775                               name="grademodified_' . $row->userid . '"
 776                               value="' . $row->timemarked . '"/>';
 777         $selectcol .= '<input type="hidden"
 778                               name="gradeattempt_' . $row->userid . '"
 779                               value="' . $row->attemptnumber . '"/>';
 780         return $selectcol;
 781     }
 782
 783     /**
 784      * Return a users grades from the listing of all grade data for this assignment.
 785      *
 786      * @param int $userid
 787      * @return mixed stdClass or false
 788      */
 789     private function get_gradebook_data_for_user($userid) {
 790         if (isset($this->gradinginfo->items[0]) && $this->gradinginfo->items[0]->grades[$userid]) {
 791             return $this->gradinginfo->items[0]->grades[$userid];
 792         }
 793         return false;
 794     }
 795
 796     /**
 797      * Format a column of data for display.
 798      *
 799      * @param stdClass $row
 800      * @return string
 801      */
 802     public function col_gradecanbechanged(stdClass $row) {
 803         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 804         if ($gradingdisabled) {
 805             return get_string('no');
 806         } else {
 807             return get_string('yes');
 808         }
 809     }
 810
 811     /**
 812      * Format a column of data for display
 813      *
 814      * @param stdClass $row
 815      * @return string
 816      */
 817     public function col_grademax(stdClass $row) {
 818         return format_float($this->assignment->get_instance()->grade, 2);
 819     }
 820
 821     /**
 822      * Format a column of data for display.
 823      *
 824      * @param stdClass $row
 825      * @return string
 826      */
 827     public function col_grade(stdClass $row) {
 828         $o = '';
 829
 830         $link = '';
 831         $separator = $this->output->spacer(array(), true);
 832         $grade = '';
 833         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 834
 835         if (!$this->is_downloading() && $this->hasgrade) {
 836             $urlparams = array('id' => $this->assignment->get_course_module()->id,
 837                                'rownum' => 0,
 838                                'action' => 'grader');
 839
 840             if ($this->assignment->is_blind_marking()) {
 841                 $urlparams['blindid'] = $this->assignment->get_uniqueid_for_user($row->userid);
 842             } else {
 843                 $urlparams['userid'] = $row->userid;
 844             }
 845
 846             $url = new moodle_url('/mod/assign/view.php', $urlparams);
 847             $link = '<a href="' . $url . '" class="btn btn-primary">' . get_string('grade') . '</a>';
 848             $grade .= $link . $separator;
 849         }
 850
 851         $grade .= $this->display_grade($row->grade,
 852                                        $this->quickgrading && !$gradingdisabled,
 853                                        $row->userid,
 854                                        $row->timemarked);
 855
 856         return $grade;
 857     }
 858
 859     /**
 860      * Format a column of data for display.
 861      *
 862      * @param stdClass $row
 863      * @return string
 864      */
 865     public function col_finalgrade(stdClass $row) {
 866         $o = '';
 867
 868         $grade = $this->get_gradebook_data_for_user($row->userid);
 869         if ($grade) {
 870             $o = $this->display_grade($grade->grade, false, $row->userid, $row->timemarked);
 871         }
 872
 873         return $o;
 874     }
 875
 876     /**
 877      * Format a column of data for display.
 878      *
 879      * @param stdClass $row
 880      * @return string
 881      */
 882     public function col_timemarked(stdClass $row) {
 883         $o = '-';
 884
 885         if ($row->timemarked && $row->grade !== null && $row->grade >= 0) {
 886             $o = userdate($row->timemarked);
 887         }
 888         if ($row->timemarked && $this->is_downloading()) {
 889             // Force it for downloads as it affects import.
 890             $o = userdate($row->timemarked);
 891         }
 892
 893         return $o;
 894     }
 895
 896     /**
 897      * Format a column of data for display.
 898      *
 899      * @param stdClass $row
 900      * @return string
 901      */
 902     public function col_timesubmitted(stdClass $row) {
 903         $o = '-';
 904
 905         $group = false;
 906         $submission = false;
 907         $this->get_group_and_submission($row->id, $group, $submission, -1);
 908         if ($submission && $submission->timemodified && $submission->status != ASSIGN_SUBMISSION_STATUS_NEW) {
 909             $o = userdate($submission->timemodified);
 910         } else if ($row->timesubmitted && $row->status != ASSIGN_SUBMISSION_STATUS_NEW) {
 911             $o = userdate($row->timesubmitted);
 912         }
 913
 914         return $o;
 915     }
 916
 917     /**
 918      * Format a column of data for display
 919      *
 920      * @param stdClass $row
 921      * @return string
 922      */
 923     public function col_status(stdClass $row) {
 924         $o = '';
 925
 926         $instance = $this->assignment->get_instance();
 927
 928         $due = $instance->duedate;
 929         if ($row->extensionduedate) {
 930             $due = $row->extensionduedate;
 931         }
 932
 933         $group = false;
 934         $submission = false;
 935         $this->get_group_and_submission($row->id, $group, $submission, -1);
 936
 937         if ($instance->teamsubmission && !$group && !$instance->preventsubmissionnotingroup) {
 938             $group = true;
 939         }
 940
 941         if ($group && $submission) {
 942             $timesubmitted = $submission->timemodified;
 943             $status = $submission->status;
 944         } else {
 945             $timesubmitted = $row->timesubmitted;
 946             $status = $row->status;
 947         }
 948
 949         $displaystatus = $status;
 950         if ($displaystatus == 'new') {
 951             $displaystatus = '';
 952         }
 953
 954         if ($this->assignment->is_any_submission_plugin_enabled()) {
 955
 956             $o .= $this->output->container(get_string('submissionstatus_' . $displaystatus, 'assign'),
 957                                            array('class'=>'submissionstatus' .$displaystatus));
 958             if ($due && $timesubmitted > $due && $status != ASSIGN_SUBMISSION_STATUS_NEW) {
 959                 $usertime = format_time($timesubmitted - $due);
 960                 $latemessage = get_string('submittedlateshort',
 961                                           'assign',
 962                                           $usertime);
 963                 $o .= $this->output->container($latemessage, 'latesubmission');
 964             }
 965             if ($row->locked) {
 966                 $lockedstr = get_string('submissionslockedshort', 'assign');
 967                 $o .= $this->output->container($lockedstr, 'lockedsubmission');
 968             }
 969
 970             // Add status of "grading" if markflow is not enabled.
 971             if (!$instance->markingworkflow) {
 972                 if ($row->grade !== null && $row->grade >= 0) {
 973                     $o .= $this->output->container(get_string('graded', 'assign'), 'submissiongraded');
 974                 } else if (!$timesubmitted || $status == ASSIGN_SUBMISSION_STATUS_NEW) {
 975                     $now = time();
 976                     if ($due && ($now > $due)) {
 977                         $overduestr = get_string('overdue', 'assign', format_time($now - $due));
 978                         $o .= $this->output->container($overduestr, 'overduesubmission');
 979                     }
 980                 }
 981             }
 982         }
 983
 984         if ($instance->markingworkflow) {
 985             $o .= $this->col_workflowstatus($row);
 986         }
 987         if ($row->extensionduedate) {
 988             $userdate = userdate($row->extensionduedate);
 989             $extensionstr = get_string('userextensiondate', 'assign', $userdate);
 990             $o .= $this->output->container($extensionstr, 'extensiondate');
 991         }
 992
 993         if ($this->is_downloading()) {
 994             $o = strip_tags(rtrim(str_replace('</div>', ' - ', $o), '- '));
 995         }
 996
 997         return $o;
 998     }
 999
1000     /**
1001      * Format a column of data for display.
1002      *
1003      * @param stdClass $row
1004      * @return string
1005      */
1006     public function col_userid(stdClass $row) {
1007         global $USER;
1008
1009         $edit = '';
1010
1011         $actions = array();
1012
1013         $urlparams = array('id' => $this->assignment->get_course_module()->id,
1014                                'rownum' => 0,
1015                                'action' => 'grader');
1016
1017         if ($this->assignment->is_blind_marking()) {
1018             $urlparams['blindid'] = $this->assignment->get_uniqueid_for_user($row->userid);
1019         } else {
1020             $urlparams['userid'] = $row->userid;
1021         }
1022         $url = new moodle_url('/mod/assign/view.php', $urlparams);
1023         $noimage = null;
1024
1025         if (!$row->grade) {
1026             $description = get_string('grade');
1027         } else {
1028             $description = get_string('updategrade', 'assign');
1029         }
1030         $actions['grade'] = new action_menu_link_secondary(
1031             $url,
1032             $noimage,
1033             $description
1034         );
1035
1036         // Everything we need is in the row.
1037         $submission = $row;
1038         $flags = $row;
1039         if ($this->assignment->get_instance()->teamsubmission) {
1040             // Use the cache for this.
1041             $submission = false;
1042             $group = false;
1043             $this->get_group_and_submission($row->id, $group, $submission, -1);
1044         }
1045
1046         $submissionsopen = $this->assignment->submissions_open($row->id,
1047                                                                true,
1048                                                                $submission,
1049                                                                $flags,
1050                                                                $this->gradinginfo);
1051         $caneditsubmission = $this->assignment->can_edit_submission($row->id, $USER->id);
1052
1053         // Hide for offline assignments.
1054         if ($this->assignment->is_any_submission_plugin_enabled()) {
1055             if (!$row->status ||
1056                     $row->status == ASSIGN_SUBMISSION_STATUS_DRAFT ||
1057                     !$this->assignment->get_instance()->submissiondrafts) {
1058
1059                 if (!$row->locked) {
1060                     $urlparams = array('id' => $this->assignment->get_course_module()->id,
1061                                        'userid'=>$row->id,
1062                                        'action'=>'lock',
1063                                        'sesskey'=>sesskey(),
1064                                        'page'=>$this->currpage);
1065                     $url = new moodle_url('/mod/assign/view.php', $urlparams);
1066
1067                     $description = get_string('preventsubmissionsshort', 'assign');
1068                     $actions['lock'] = new action_menu_link_secondary(
1069                         $url,
1070                         $noimage,
1071                         $description
1072                     );
1073                 } else {
1074                     $urlparams = array('id' => $this->assignment->get_course_module()->id,
1075                                        'userid'=>$row->id,
1076                                        'action'=>'unlock',
1077                                        'sesskey'=>sesskey(),
1078                                        'page'=>$this->currpage);
1079                     $url = new moodle_url('/mod/assign/view.php', $urlparams);
1080                     $description = get_string('allowsubmissionsshort', 'assign');
1081                     $actions['unlock'] = new action_menu_link_secondary(
1082                         $url,
1083                         $noimage,
1084                         $description
1085                     );
1086                 }
1087             }
1088
1089             if ($submissionsopen &&
1090                     $USER->id != $row->id &&
1091                     $caneditsubmission) {
1092                 $urlparams = array('id' => $this->assignment->get_course_module()->id,
1093                                    'userid'=>$row->id,
1094                                    'action'=>'editsubmission',
1095                                    'sesskey'=>sesskey(),
1096                                    'page'=>$this->currpage);
1097                 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1098                 $description = get_string('editsubmission', 'assign');
1099                 $actions['editsubmission'] = new action_menu_link_secondary(
1100                     $url,
1101                     $noimage,
1102                     $description
1103                 );
1104             }
1105         }
1106         if (($this->assignment->get_instance()->duedate ||
1107                 $this->assignment->get_instance()->cutoffdate) &&
1108                 $this->hasgrantextension) {
1109              $urlparams = array('id' => $this->assignment->get_course_module()->id,
1110                                 'userid' => $row->id,
1111                                 'action' => 'grantextension',
1112                                 'sesskey' => sesskey(),
1113                                 'page' => $this->currpage);
1114              $url = new moodle_url('/mod/assign/view.php', $urlparams);
1115              $description = get_string('grantextension', 'assign');
1116              $actions['grantextension'] = new action_menu_link_secondary(
1117                  $url,
1118                  $noimage,
1119                  $description
1120              );
1121         }
1122         if ($row->status == ASSIGN_SUBMISSION_STATUS_SUBMITTED &&
1123                 $this->assignment->get_instance()->submissiondrafts) {
1124             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1125                                'userid'=>$row->id,
1126                                'action'=>'reverttodraft',
1127                                'sesskey'=>sesskey(),
1128                                'page'=>$this->currpage);
1129             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1130             $description = get_string('reverttodraftshort', 'assign');
1131             $actions['reverttodraft'] = new action_menu_link_secondary(
1132                 $url,
1133                 $noimage,
1134                 $description
1135             );
1136         }
1137         if ($row->status == ASSIGN_SUBMISSION_STATUS_DRAFT &&
1138                 $this->assignment->get_instance()->submissiondrafts &&
1139                 $caneditsubmission &&
1140                 $submissionsopen &&
1141                 $row->id != $USER->id) {
1142             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1143                                'userid'=>$row->id,
1144                                'action'=>'submitotherforgrading',
1145                                'sesskey'=>sesskey(),
1146                                'page'=>$this->currpage);
1147             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1148             $description = get_string('submitforgrading', 'assign');
1149             $actions['submitforgrading'] = new action_menu_link_secondary(
1150                 $url,
1151                 $noimage,
1152                 $description
1153             );
1154         }
1155
1156         $ismanual = $this->assignment->get_instance()->attemptreopenmethod == ASSIGN_ATTEMPT_REOPEN_METHOD_MANUAL;
1157         $hassubmission = !empty($row->status);
1158         $notreopened = $hassubmission && $row->status != ASSIGN_SUBMISSION_STATUS_REOPENED;
1159         $isunlimited = $this->assignment->get_instance()->maxattempts == ASSIGN_UNLIMITED_ATTEMPTS;
1160         $hasattempts = $isunlimited || $row->attemptnumber < $this->assignment->get_instance()->maxattempts - 1;
1161
1162         if ($ismanual && $hassubmission && $notreopened && $hasattempts) {
1163             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1164                                'userid'=>$row->id,
1165                                'action'=>'addattempt',
1166                                'sesskey'=>sesskey(),
1167                                'page'=>$this->currpage);
1168             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1169             $description = get_string('addattempt', 'assign');
1170             $actions['addattempt'] = new action_menu_link_secondary(
1171                 $url,
1172                 $noimage,
1173                 $description
1174             );
1175         }
1176
1177         $menu = new action_menu();
1178         $menu->set_owner_selector('.gradingtable-actionmenu');
1179         $menu->set_alignment(action_menu::TL, action_menu::BL);
1180         $menu->set_constraint('.gradingtable > .no-overflow');
1181         $menu->set_menu_trigger(get_string('edit'));
1182         foreach ($actions as $action) {
1183             $menu->add($action);
1184         }
1185
1186         // Prioritise the menu ahead of all other actions.
1187         $menu->prioritise = true;
1188
1189         $edit .= $this->output->render($menu);
1190
1191         return $edit;
1192     }
1193
1194     /**
1195      * Write the plugin summary with an optional link to view the full feedback/submission.
1196      *
1197      * @param assign_plugin $plugin Submission plugin or feedback plugin
1198      * @param stdClass $item Submission or grade
1199      * @param string $returnaction The return action to pass to the
1200      *                             view_submission page (the current page)
1201      * @param string $returnparams The return params to pass to the view_submission
1202      *                             page (the current page)
1203      * @return string The summary with an optional link
1204      */
1205     private function format_plugin_summary_with_link(assign_plugin $plugin,
1206                                                      stdClass $item,
1207                                                      $returnaction,
1208                                                      $returnparams) {
1209         $link = '';
1210         $showviewlink = false;
1211
1212         $summary = $plugin->view_summary($item, $showviewlink);
1213         $separator = '';
1214         if ($showviewlink) {
1215             $viewstr = get_string('view' . substr($plugin->get_subtype(), strlen('assign')), 'assign');
1216             $icon = $this->output->pix_icon('t/preview', $viewstr);
1217             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1218                                                      'sid'=>$item->id,
1219                                                      'gid'=>$item->id,
1220                                                      'plugin'=>$plugin->get_type(),
1221                                                      'action'=>'viewplugin' . $plugin->get_subtype(),
1222                                                      'returnaction'=>$returnaction,
1223                                                      'returnparams'=>http_build_query($returnparams));
1224             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1225             $link = $this->output->action_link($url, $icon);
1226             $separator = $this->output->spacer(array(), true);
1227         }
1228
1229         return $link . $separator . $summary;
1230     }
1231
1232
1233     /**
1234      * Format the submission and feedback columns.
1235      *
1236      * @param string $colname The column name
1237      * @param stdClass $row The submission row
1238      * @return mixed string or NULL
1239      */
1240     public function other_cols($colname, $row) {
1241         // For extra user fields the result is already in $row.
1242         if (empty($this->plugincache[$colname])) {
1243             return $row->$colname;
1244         }
1245
1246         // This must be a plugin field.
1247         $plugincache = $this->plugincache[$colname];
1248
1249         $plugin = $plugincache[0];
1250
1251         $field = null;
1252         if (isset($plugincache[1])) {
1253             $field = $plugincache[1];
1254         }
1255
1256         if ($plugin->is_visible() && $plugin->is_enabled()) {
1257             if ($plugin->get_subtype() == 'assignsubmission') {
1258                 if ($this->assignment->get_instance()->teamsubmission) {
1259                     $group = false;
1260                     $submission = false;
1261
1262                     $this->get_group_and_submission($row->id, $group, $submission, -1);
1263                     if ($submission) {
1264                         if ($submission->status == ASSIGN_SUBMISSION_STATUS_REOPENED) {
1265                             // For a newly reopened submission - we want to show the previous submission in the table.
1266                             $this->get_group_and_submission($row->id, $group, $submission, $submission->attemptnumber-1);
1267                         }
1268                         if (isset($field)) {
1269                             return $plugin->get_editor_text($field, $submission->id);
1270                         }
1271                         return $this->format_plugin_summary_with_link($plugin,
1272                                                                       $submission,
1273                                                                       'grading',
1274                                                                       array());
1275                     }
1276                 } else if ($row->submissionid) {
1277                     if ($row->status == ASSIGN_SUBMISSION_STATUS_REOPENED) {
1278                         // For a newly reopened submission - we want to show the previous submission in the table.
1279                         $submission = $this->assignment->get_user_submission($row->userid, false, $row->attemptnumber - 1);
1280                     } else {
1281                         $submission = new stdClass();
1282                         $submission->id = $row->submissionid;
1283                         $submission->timecreated = $row->firstsubmission;
1284                         $submission->timemodified = $row->timesubmitted;
1285                         $submission->assignment = $this->assignment->get_instance()->id;
1286                         $submission->userid = $row->userid;
1287                         $submission->attemptnumber = $row->attemptnumber;
1288                     }
1289                     // Field is used for only for import/export and refers the the fieldname for the text editor.
1290                     if (isset($field)) {
1291                         return $plugin->get_editor_text($field, $submission->id);
1292                     }
1293                     return $this->format_plugin_summary_with_link($plugin,
1294                                                                   $submission,
1295                                                                   'grading',
1296                                                                   array());
1297                 }
1298             } else {
1299                 $grade = null;
1300                 if (isset($field)) {
1301                     return $plugin->get_editor_text($field, $row->gradeid);
1302                 }
1303
1304                 if ($row->gradeid) {
1305                     $grade = new stdClass();
1306                     $grade->id = $row->gradeid;
1307                     $grade->timecreated = $row->firstmarked;
1308                     $grade->timemodified = $row->timemarked;
1309                     $grade->assignment = $this->assignment->get_instance()->id;
1310                     $grade->userid = $row->userid;
1311                     $grade->grade = $row->grade;
1312                     $grade->mailed = $row->mailed;
1313                     $grade->attemptnumber = $row->attemptnumber;
1314                 }
1315                 if ($this->quickgrading && $plugin->supports_quickgrading()) {
1316                     return $plugin->get_quickgrading_html($row->userid, $grade);
1317                 } else if ($grade) {
1318                     return $this->format_plugin_summary_with_link($plugin,
1319                                                                   $grade,
1320                                                                   'grading',
1321                                                                   array());
1322                 }
1323             }
1324         }
1325         return '';
1326     }
1327
1328     /**
1329      * Using the current filtering and sorting - load all rows and return a single column from them.
1330      *
1331      * @param string $columnname The name of the raw column data
1332      * @return array of data
1333      */
1334     public function get_column_data($columnname) {
1335         $this->setup();
1336         $this->currpage = 0;
1337         $this->query_db($this->tablemaxrows);
1338         $result = array();
1339         foreach ($this->rawdata as $row) {
1340             $result[] = $row->$columnname;
1341         }
1342         return $result;
1343     }
1344
1345     /**
1346      * Return things to the renderer.
1347      *
1348      * @return string the assignment name
1349      */
1350     public function get_assignment_name() {
1351         return $this->assignment->get_instance()->name;
1352     }
1353
1354     /**
1355      * Return things to the renderer.
1356      *
1357      * @return int the course module id
1358      */
1359     public function get_course_module_id() {
1360         return $this->assignment->get_course_module()->id;
1361     }
1362
1363     /**
1364      * Return things to the renderer.
1365      *
1366      * @return int the course id
1367      */
1368     public function get_course_id() {
1369         return $this->assignment->get_course()->id;
1370     }
1371
1372     /**
1373      * Return things to the renderer.
1374      *
1375      * @return stdClass The course context
1376      */
1377     public function get_course_context() {
1378         return $this->assignment->get_course_context();
1379     }
1380
1381     /**
1382      * Return things to the renderer.
1383      *
1384      * @return bool Does this assignment accept submissions
1385      */
1386     public function submissions_enabled() {
1387         return $this->assignment->is_any_submission_plugin_enabled();
1388     }
1389
1390     /**
1391      * Return things to the renderer.
1392      *
1393      * @return bool Can this user view all grades (the gradebook)
1394      */
1395     public function can_view_all_grades() {
1396         $context = $this->assignment->get_course_context();
1397         return has_capability('gradereport/grader:view', $context) &&
1398                has_capability('moodle/grade:viewall', $context);
1399     }
1400
1401     /**
1402      * Always return a valid sort - even if the userid column is missing.
1403      * @return array column name => SORT_... constant.
1404      */
1405     public function get_sort_columns() {
1406         $result = parent::get_sort_columns();
1407         $result = array_merge($result, array('userid' => SORT_ASC));
1408         return $result;
1409     }
1410
1411     /**
1412      * Override the table show_hide_link to not show for select column.
1413      *
1414      * @param string $column the column name, index into various names.
1415      * @param int $index numerical index of the column.
1416      * @return string HTML fragment.
1417      */
1418     protected function show_hide_link($column, $index) {
1419         if ($index > 0 || !$this->hasgrade) {
1420             return parent::show_hide_link($column, $index);
1421         }
1422         return '';
1423     }
1424
1425     /**
1426      * Overides setup to ensure it will only run a single time.
1427      */
1428     public function setup() {
1429         // Check if the setup function has been called before, we should not run it twice.
1430         // If we do the sortorder of the table will be broken.
1431         if (!empty($this->setup)) {
1432             return;
1433         }
1434         parent::setup();
1435     }
1436 }