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         $from .= 'LEFT JOIN {assign_user_flags} uf
 178                          ON u.id = uf.userid
 179                         AND uf.assignment = :assignmentid3 ';
 180
 181         if (!empty($this->assignment->get_instance()->blindmarking)) {
 182             $from .= 'LEFT JOIN {assign_user_mapping} um
 183                              ON u.id = um.userid
 184                             AND um.assignment = :assignmentid4 ';
 185             $params['assignmentid4'] = (int)$this->assignment->get_instance()->id;
 186             $fields .= ', um.id as recordid ';
 187         }
 188
 189         $userparams = array();
 190         $userindex = 0;
 191
 192         list($userwhere, $userparams) = $DB->get_in_or_equal($users, SQL_PARAMS_NAMED, 'user');
 193         $where = 'u.id ' . $userwhere;
 194         $params = array_merge($params, $userparams);
 195
 196         // The filters do not make sense when there are no submissions, so do not apply them.
 197         if ($this->assignment->is_any_submission_plugin_enabled()) {
 198             if ($filter == ASSIGN_FILTER_SUBMITTED) {
 199                 $where .= ' AND (s.timemodified IS NOT NULL AND
 200                                  s.status = :submitted) ';
 201                 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;
 202
 203             } else if ($filter == ASSIGN_FILTER_NOT_SUBMITTED) {
 204                 $where .= ' AND (s.timemodified IS NULL OR s.status != :submitted) ';
 205                 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;
 206             } else if ($filter == ASSIGN_FILTER_REQUIRE_GRADING) {
 207                 $where .= ' AND (s.timemodified IS NOT NULL AND
 208                                  s.status = :submitted AND
 209                                  (s.timemodified >= g.timemodified OR g.timemodified IS NULL OR g.grade IS NULL))';
 210                 $params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;
 211
 212             } else if (strpos($filter, ASSIGN_FILTER_SINGLE_USER) === 0) {
 213                 $userfilter = (int) array_pop(explode('=', $filter));
 214                 $where .= ' AND (u.id = :userid)';
 215                 $params['userid'] = $userfilter;
 216             }
 217         }
 218
 219         if ($this->assignment->get_instance()->markingworkflow &&
 220             $this->assignment->get_instance()->markingallocation) {
 221             if (has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {
 222                 // Check to see if marker filter is set.
 223                 $markerfilter = (int)get_user_preferences('assign_markerfilter', '');
 224                 if (!empty($markerfilter)) {
 225                     if ($markerfilter == ASSIGN_MARKER_FILTER_NO_MARKER) {
 226                         $where .= ' AND (uf.allocatedmarker IS NULL OR uf.allocatedmarker = 0)';
 227                     } else {
 228                         $where .= ' AND uf.allocatedmarker = :markerid';
 229                         $params['markerid'] = $markerfilter;
 230                     }
 231                 }
 232             } else { // Only show users allocated to this marker.
 233                 $where .= ' AND uf.allocatedmarker = :markerid';
 234                 $params['markerid'] = $USER->id;
 235             }
 236         }
 237
 238         if ($this->assignment->get_instance()->markingworkflow) {
 239             $workflowstates = $this->assignment->get_marking_workflow_states_for_current_user();
 240             if (!empty($workflowstates)) {
 241                 $workflowfilter = get_user_preferences('assign_workflowfilter', '');
 242                 if ($workflowfilter == ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED) {
 243                     $where .= ' AND (uf.workflowstate = :workflowstate OR uf.workflowstate IS NULL OR '.
 244                         $DB->sql_isempty('assign_user_flags', 'workflowstate', true, true).')';
 245                     $params['workflowstate'] = $workflowfilter;
 246                 } else if (array_key_exists($workflowfilter, $workflowstates)) {
 247                     $where .= ' AND uf.workflowstate = :workflowstate';
 248                     $params['workflowstate'] = $workflowfilter;
 249                 }
 250             }
 251         }
 252
 253         $this->set_sql($fields, $from, $where, $params);
 254
 255         if ($downloadfilename) {
 256             $this->is_downloading('csv', $downloadfilename);
 257         }
 258
 259         $columns = array();
 260         $headers = array();
 261
 262         // Select.
 263         if (!$this->is_downloading() && $this->hasgrade) {
 264             $columns[] = 'select';
 265             $headers[] = get_string('select') .
 266                     '<div class="selectall"><label class="accesshide" for="selectall">' . get_string('selectall') . '</label>
 267                     <input type="checkbox" id="selectall" name="selectall" title="' . get_string('selectall') . '"/></div>';
 268         }
 269
 270         // User picture.
 271         if ($this->hasviewblind || !$this->assignment->is_blind_marking()) {
 272             if (!$this->is_downloading()) {
 273                 $columns[] = 'picture';
 274                 $headers[] = get_string('pictureofuser');
 275             } else {
 276                 $columns[] = 'recordid';
 277                 $headers[] = get_string('recordid', 'assign');
 278             }
 279
 280             // Fullname.
 281             $columns[] = 'fullname';
 282             $headers[] = get_string('fullname');
 283
 284             // Participant # details if can view real identities.
 285             if ($this->assignment->is_blind_marking()) {
 286                 if (!$this->is_downloading()) {
 287                     $columns[] = 'recordid';
 288                     $headers[] = get_string('recordid', 'assign');
 289                 }
 290             }
 291
 292             foreach ($extrauserfields as $extrafield) {
 293                 $columns[] = $extrafield;
 294                 $headers[] = get_user_field_name($extrafield);
 295             }
 296         } else {
 297             // Record ID.
 298             $columns[] = 'recordid';
 299             $headers[] = get_string('recordid', 'assign');
 300         }
 301
 302         // Submission status.
 303         $columns[] = 'status';
 304         $headers[] = get_string('status', 'assign');
 305
 306         // Team submission columns.
 307         if ($assignment->get_instance()->teamsubmission) {
 308             $columns[] = 'team';
 309             $headers[] = get_string('submissionteam', 'assign');
 310         }
 311         // Allocated marker.
 312         if ($this->assignment->get_instance()->markingworkflow &&
 313             $this->assignment->get_instance()->markingallocation &&
 314             has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {
 315             // Add a column for the allocated marker.
 316             $columns[] = 'allocatedmarker';
 317             $headers[] = get_string('marker', 'assign');
 318         }
 319         // Grade.
 320         $columns[] = 'grade';
 321         $headers[] = get_string('grade');
 322         if ($this->is_downloading()) {
 323             if ($this->assignment->get_instance()->grade >= 0) {
 324                 $columns[] = 'grademax';
 325                 $headers[] = get_string('maxgrade', 'assign');
 326             } else {
 327                 // This is a custom scale.
 328                 $columns[] = 'scale';
 329                 $headers[] = get_string('scale', 'assign');
 330             }
 331
 332             if ($this->assignment->get_instance()->markingworkflow) {
 333                 // Add a column for the marking workflow state.
 334                 $columns[] = 'workflowstate';
 335                 $headers[] = get_string('markingworkflowstate', 'assign');
 336             }
 337             // Add a column for the list of valid marking workflow states.
 338             $columns[] = 'gradecanbechanged';
 339             $headers[] = get_string('gradecanbechanged', 'assign');
 340         }
 341         if (!$this->is_downloading() && $this->hasgrade) {
 342             // We have to call this column userid so we can use userid as a default sortable column.
 343             $columns[] = 'userid';
 344             $headers[] = get_string('edit');
 345         }
 346
 347         // Submission plugins.
 348         if ($assignment->is_any_submission_plugin_enabled()) {
 349             $columns[] = 'timesubmitted';
 350             $headers[] = get_string('lastmodifiedsubmission', 'assign');
 351
 352             foreach ($this->assignment->get_submission_plugins() as $plugin) {
 353                 if ($this->is_downloading()) {
 354                     if ($plugin->is_visible() && $plugin->is_enabled()) {
 355                         foreach ($plugin->get_editor_fields() as $field => $description) {
 356                             $index = 'plugin' . count($this->plugincache);
 357                             $this->plugincache[$index] = array($plugin, $field);
 358                             $columns[] = $index;
 359                             $headers[] = $plugin->get_name();
 360                         }
 361                     }
 362                 } else {
 363                     if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 364                         $index = 'plugin' . count($this->plugincache);
 365                         $this->plugincache[$index] = array($plugin);
 366                         $columns[] = $index;
 367                         $headers[] = $plugin->get_name();
 368                     }
 369                 }
 370             }
 371         }
 372
 373         // Time marked.
 374         $columns[] = 'timemarked';
 375         $headers[] = get_string('lastmodifiedgrade', 'assign');
 376
 377         // Feedback plugins.
 378         foreach ($this->assignment->get_feedback_plugins() as $plugin) {
 379             if ($this->is_downloading()) {
 380                 if ($plugin->is_visible() && $plugin->is_enabled()) {
 381                     foreach ($plugin->get_editor_fields() as $field => $description) {
 382                         $index = 'plugin' . count($this->plugincache);
 383                         $this->plugincache[$index] = array($plugin, $field);
 384                         $columns[] = $index;
 385                         $headers[] = $description;
 386                     }
 387                 }
 388             } else if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 389                 $index = 'plugin' . count($this->plugincache);
 390                 $this->plugincache[$index] = array($plugin);
 391                 $columns[] = $index;
 392                 $headers[] = $plugin->get_name();
 393             }
 394         }
 395
 396         // Exclude 'Final grade' column in downloaded grading worksheets.
 397         if (!$this->is_downloading()) {
 398             // Final grade.
 399             $columns[] = 'finalgrade';
 400             $headers[] = get_string('finalgrade', 'grades');
 401         }
 402
 403         // Load the grading info for all users.
 404         $this->gradinginfo = grade_get_grades($this->assignment->get_course()->id,
 405                                               'mod',
 406                                               'assign',
 407                                               $this->assignment->get_instance()->id,
 408                                               $users);
 409
 410         if (!empty($CFG->enableoutcomes) && !empty($this->gradinginfo->outcomes)) {
 411             $columns[] = 'outcomes';
 412             $headers[] = get_string('outcomes', 'grades');
 413         }
 414
 415         // Set the columns.
 416         $this->define_columns($columns);
 417         $this->define_headers($headers);
 418         foreach ($extrauserfields as $extrafield) {
 419              $this->column_class($extrafield, $extrafield);
 420         }
 421         $this->no_sorting('recordid');
 422         $this->no_sorting('finalgrade');
 423         $this->no_sorting('userid');
 424         $this->no_sorting('select');
 425         $this->no_sorting('outcomes');
 426
 427         if ($assignment->get_instance()->teamsubmission) {
 428             $this->no_sorting('team');
 429         }
 430
 431         $plugincolumnindex = 0;
 432         foreach ($this->assignment->get_submission_plugins() as $plugin) {
 433             if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 434                 $submissionpluginindex = 'plugin' . $plugincolumnindex++;
 435                 $this->no_sorting($submissionpluginindex);
 436             }
 437         }
 438         foreach ($this->assignment->get_feedback_plugins() as $plugin) {
 439             if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {
 440                 $feedbackpluginindex = 'plugin' . $plugincolumnindex++;
 441                 $this->no_sorting($feedbackpluginindex);
 442             }
 443         }
 444
 445         // When there is no data we still want the column headers printed in the csv file.
 446         if ($this->is_downloading()) {
 447             $this->start_output();
 448         }
 449     }
 450
 451     /**
 452      * Before adding each row to the table make sure rownum is incremented.
 453      *
 454      * @param array $row row of data from db used to make one row of the table.
 455      * @return array one row for the table
 456      */
 457     public function format_row($row) {
 458         if ($this->rownum < 0) {
 459             $this->rownum = $this->currpage * $this->pagesize;
 460         } else {
 461             $this->rownum += 1;
 462         }
 463
 464         return parent::format_row($row);
 465     }
 466
 467     /**
 468      * Add a column with an ID that uniquely identifies this user in this assignment.
 469      *
 470      * @param stdClass $row
 471      * @return string
 472      */
 473     public function col_recordid(stdClass $row) {
 474         if (empty($row->recordid)) {
 475             $row->recordid = $this->assignment->get_uniqueid_for_user($row->userid);
 476         }
 477         return get_string('hiddenuser', 'assign') . $row->recordid;
 478     }
 479
 480
 481     /**
 482      * Add the userid to the row class so it can be updated via ajax.
 483      *
 484      * @param stdClass $row The row of data
 485      * @return string The row class
 486      */
 487     public function get_row_class($row) {
 488         return 'user' . $row->userid;
 489     }
 490
 491     /**
 492      * Return the number of rows to display on a single page.
 493      *
 494      * @return int The number of rows per page
 495      */
 496     public function get_rows_per_page() {
 497         return $this->perpage;
 498     }
 499
 500     /**
 501      * list current marking workflow state
 502      *
 503      * @param stdClass $row
 504      * @return string
 505      */
 506     public function col_workflowstatus(stdClass $row) {
 507         $o = '';
 508
 509         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 510         // The function in the assignment keeps a static cache of this list of states.
 511         $workflowstates = $this->assignment->get_marking_workflow_states_for_current_user();
 512         $workflowstate = $row->workflowstate;
 513         if (empty($workflowstate)) {
 514             $workflowstate = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED;
 515         }
 516         if ($this->quickgrading && !$gradingdisabled) {
 517             $notmarked = get_string('markingworkflowstatenotmarked', 'assign');
 518             $name = 'quickgrade_' . $row->id . '_workflowstate';
 519             $o .= html_writer::select($workflowstates, $name, $workflowstate, array('' => $notmarked));
 520             // Check if this user is a marker that can't manage allocations and doesn't have the marker column added.
 521             if ($this->assignment->get_instance()->markingworkflow &&
 522                 $this->assignment->get_instance()->markingallocation &&
 523                 !has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {
 524
 525                 $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 526                 $o .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => $name,
 527                         'value' => $row->allocatedmarker));
 528             }
 529         } else {
 530             $o .= $this->output->container(get_string('markingworkflowstate' . $workflowstate, 'assign'), $workflowstate);
 531         }
 532         return $o;
 533     }
 534
 535     /**
 536      * For download only - list current marking workflow state
 537      *
 538      * @param stdClass $row - The row of data
 539      * @return string The current marking workflow state
 540      */
 541     public function col_workflowstate($row) {
 542         $state = $row->workflowstate;
 543         if (empty($state)) {
 544             $state = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED;
 545         }
 546
 547         return get_string('markingworkflowstate' . $state, 'assign');
 548     }
 549
 550     /**
 551      * list current marker
 552      *
 553      * @param stdClass $row - The row of data
 554      * @return id the user->id of the marker.
 555      */
 556     public function col_allocatedmarker(stdClass $row) {
 557         static $markers = null;
 558         static $markerlist = array();
 559         if ($markers === null) {
 560             list($sort, $params) = users_order_by_sql();
 561             $markers = get_users_by_capability($this->assignment->get_context(), 'mod/assign:grade', '', $sort);
 562             $markerlist[0] = get_string('choosemarker', 'assign');
 563             foreach ($markers as $marker) {
 564                 $markerlist[$marker->id] = fullname($marker);
 565             }
 566         }
 567         if (empty($markerlist)) {
 568             // TODO: add some form of notification here that no markers are available.
 569             return '';
 570         }
 571         if ($this->is_downloading()) {
 572             if (isset($markers[$row->allocatedmarker])) {
 573                 return fullname($markers[$row->allocatedmarker]);
 574             } else {
 575                 return '';
 576             }
 577         }
 578
 579         if ($this->quickgrading && has_capability('mod/assign:manageallocations', $this->assignment->get_context()) &&
 580             (empty($row->workflowstate) ||
 581              $row->workflowstate == ASSIGN_MARKING_WORKFLOW_STATE_INMARKING ||
 582              $row->workflowstate == ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED)) {
 583
 584             $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 585             return  html_writer::select($markerlist, $name, $row->allocatedmarker, false);
 586         } else if (!empty($row->allocatedmarker)) {
 587             $output = '';
 588             if ($this->quickgrading) { // Add hidden field for quickgrading page.
 589                 $name = 'quickgrade_' . $row->id . '_allocatedmarker';
 590                 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>$name, 'value'=>$row->allocatedmarker));
 591             }
 592             $output .= $markerlist[$row->allocatedmarker];
 593             return $output;
 594         }
 595     }
 596     /**
 597      * For download only - list all the valid options for this custom scale.
 598      *
 599      * @param stdClass $row - The row of data
 600      * @return string A list of valid options for the current scale
 601      */
 602     public function col_scale($row) {
 603         global $DB;
 604
 605         if (empty($this->scale)) {
 606             $dbparams = array('id'=>-($this->assignment->get_instance()->grade));
 607             $this->scale = $DB->get_record('scale', $dbparams);
 608         }
 609
 610         if (!empty($this->scale->scale)) {
 611             return implode("\n", explode(',', $this->scale->scale));
 612         }
 613         return '';
 614     }
 615
 616     /**
 617      * Display a grade with scales etc.
 618      *
 619      * @param string $grade
 620      * @param boolean $editable
 621      * @param int $userid The user id of the user this grade belongs to
 622      * @param int $modified Timestamp showing when the grade was last modified
 623      * @return string The formatted grade
 624      */
 625     public function display_grade($grade, $editable, $userid, $modified) {
 626         if ($this->is_downloading()) {
 627             if ($this->assignment->get_instance()->grade >= 0) {
 628                 if ($grade == -1 || $grade === null) {
 629                     return '';
 630                 }
 631                 $gradeitem = $this->assignment->get_grade_item();
 632                 return format_float($grade, $gradeitem->get_decimals());
 633             } else {
 634                 // This is a custom scale.
 635                 $scale = $this->assignment->display_grade($grade, false);
 636                 if ($scale == '-') {
 637                     $scale = '';
 638                 }
 639                 return $scale;
 640             }
 641         }
 642         return $this->assignment->display_grade($grade, $editable, $userid, $modified);
 643     }
 644
 645     /**
 646      * Get the team info for this user.
 647      *
 648      * @param stdClass $row
 649      * @return string The team name
 650      */
 651     public function col_team(stdClass $row) {
 652         $submission = false;
 653         $group = false;
 654         $this->get_group_and_submission($row->id, $group, $submission, -1);
 655         if ($group) {
 656             return $group->name;
 657         } else if ($this->assignment->get_instance()->preventsubmissionnotingroup) {
 658             $usergroups = $this->assignment->get_all_groups($row->id);
 659             if (count($usergroups) > 1) {
 660                 return get_string('multipleteamsgrader', 'assign');
 661             } else {
 662                 return get_string('noteamgrader', 'assign');
 663             }
 664         }
 665         return get_string('defaultteam', 'assign');
 666     }
 667
 668     /**
 669      * Use a static cache to try and reduce DB calls.
 670      *
 671      * @param int $userid The user id for this submission
 672      * @param int $group The groupid (returned)
 673      * @param stdClass|false $submission The stdClass submission or false (returned)
 674      * @param int $attemptnumber Return a specific attempt number (-1 for latest)
 675      */
 676     protected function get_group_and_submission($userid, &$group, &$submission, $attemptnumber) {
 677         $group = false;
 678         if (isset($this->submissiongroups[$userid])) {
 679             $group = $this->submissiongroups[$userid];
 680         } else {
 681             $group = $this->assignment->get_submission_group($userid, false);
 682             $this->submissiongroups[$userid] = $group;
 683         }
 684
 685         $groupid = 0;
 686         if ($group) {
 687             $groupid = $group->id;
 688         }
 689
 690         // Static cache is keyed by groupid and attemptnumber.
 691         // We may need both the latest and previous attempt in the same page.
 692         if (isset($this->groupsubmissions[$groupid . ':' . $attemptnumber])) {
 693             $submission = $this->groupsubmissions[$groupid . ':' . $attemptnumber];
 694         } else {
 695             $submission = $this->assignment->get_group_submission($userid, $groupid, false, $attemptnumber);
 696             $this->groupsubmissions[$groupid . ':' . $attemptnumber] = $submission;
 697         }
 698     }
 699
 700     /**
 701      * Format a list of outcomes.
 702      *
 703      * @param stdClass $row
 704      * @return string
 705      */
 706     public function col_outcomes(stdClass $row) {
 707         $outcomes = '';
 708         foreach ($this->gradinginfo->outcomes as $index => $outcome) {
 709             $options = make_grades_menu(-$outcome->scaleid);
 710
 711             $options[0] = get_string('nooutcome', 'grades');
 712             if ($this->quickgrading && !($outcome->grades[$row->userid]->locked)) {
 713                 $select = '<select name="outcome_' . $index . '_' . $row->userid . '" class="quickgrade">';
 714                 foreach ($options as $optionindex => $optionvalue) {
 715                     $selected = '';
 716                     if ($outcome->grades[$row->userid]->grade == $optionindex) {
 717                         $selected = 'selected="selected"';
 718                     }
 719                     $select .= '<option value="' . $optionindex . '"' . $selected . '>' . $optionvalue . '</option>';
 720                 }
 721                 $select .= '</select>';
 722                 $outcomes .= $this->output->container($outcome->name . ': ' . $select, 'outcome');
 723             } else {
 724                 $name = $outcome->name . ': ' . $options[$outcome->grades[$row->userid]->grade];
 725                 if ($this->is_downloading()) {
 726                     $outcomes .= $name;
 727                 } else {
 728                     $outcomes .= $this->output->container($name, 'outcome');
 729                 }
 730             }
 731         }
 732
 733         return $outcomes;
 734     }
 735
 736
 737     /**
 738      * Format a user picture for display.
 739      *
 740      * @param stdClass $row
 741      * @return string
 742      */
 743     public function col_picture(stdClass $row) {
 744         return $this->output->user_picture($row);
 745     }
 746
 747     /**
 748      * Format a user record for display (link to profile).
 749      *
 750      * @param stdClass $row
 751      * @return string
 752      */
 753     public function col_fullname($row) {
 754         if (!$this->is_downloading()) {
 755             $courseid = $this->assignment->get_course()->id;
 756             $link= new moodle_url('/user/view.php', array('id' =>$row->id, 'course'=>$courseid));
 757             $fullname = $this->output->action_link($link, $this->assignment->fullname($row));
 758         } else {
 759             $fullname = $this->assignment->fullname($row);
 760         }
 761
 762         if (!$this->assignment->is_active_user($row->id)) {
 763             $suspendedstring = get_string('userenrolmentsuspended', 'grades');
 764             $fullname .= ' ' . html_writer::empty_tag('img', array('src' => $this->output->pix_url('i/enrolmentsuspended'),
 765                 'title' => $suspendedstring, 'alt' => $suspendedstring, 'class' => 'usersuspendedicon'));
 766             $fullname = html_writer::tag('span', $fullname, array('class' => 'usersuspended'));
 767         }
 768         return $fullname;
 769     }
 770
 771     /**
 772      * Insert a checkbox for selecting the current row for batch operations.
 773      *
 774      * @param stdClass $row
 775      * @return string
 776      */
 777     public function col_select(stdClass $row) {
 778         $selectcol = '<label class="accesshide" for="selectuser_' . $row->userid . '">';
 779         $selectcol .= get_string('selectuser', 'assign', $this->assignment->fullname($row));
 780         $selectcol .= '</label>';
 781         $selectcol .= '<input type="checkbox"
 782                               id="selectuser_' . $row->userid . '"
 783                               name="selectedusers"
 784                               value="' . $row->userid . '"/>';
 785         $selectcol .= '<input type="hidden"
 786                               name="grademodified_' . $row->userid . '"
 787                               value="' . $row->timemarked . '"/>';
 788         $selectcol .= '<input type="hidden"
 789                               name="gradeattempt_' . $row->userid . '"
 790                               value="' . $row->attemptnumber . '"/>';
 791         return $selectcol;
 792     }
 793
 794     /**
 795      * Return a users grades from the listing of all grade data for this assignment.
 796      *
 797      * @param int $userid
 798      * @return mixed stdClass or false
 799      */
 800     private function get_gradebook_data_for_user($userid) {
 801         if (isset($this->gradinginfo->items[0]) && $this->gradinginfo->items[0]->grades[$userid]) {
 802             return $this->gradinginfo->items[0]->grades[$userid];
 803         }
 804         return false;
 805     }
 806
 807     /**
 808      * Format a column of data for display.
 809      *
 810      * @param stdClass $row
 811      * @return string
 812      */
 813     public function col_gradecanbechanged(stdClass $row) {
 814         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 815         if ($gradingdisabled) {
 816             return get_string('no');
 817         } else {
 818             return get_string('yes');
 819         }
 820     }
 821
 822     /**
 823      * Format a column of data for display
 824      *
 825      * @param stdClass $row
 826      * @return string
 827      */
 828     public function col_grademax(stdClass $row) {
 829         $gradeitem = $this->assignment->get_grade_item();
 830         return format_float($this->assignment->get_instance()->grade, $gradeitem->get_decimals());
 831     }
 832
 833     /**
 834      * Format a column of data for display.
 835      *
 836      * @param stdClass $row
 837      * @return string
 838      */
 839     public function col_grade(stdClass $row) {
 840         $o = '';
 841
 842         $link = '';
 843         $separator = $this->output->spacer(array(), true);
 844         $grade = '';
 845         $gradingdisabled = $this->assignment->grading_disabled($row->id);
 846
 847         if (!$this->is_downloading() && $this->hasgrade) {
 848             $urlparams = array('id' => $this->assignment->get_course_module()->id,
 849                                'rownum' => 0,
 850                                'action' => 'grader');
 851
 852             if ($this->assignment->is_blind_marking()) {
 853                 if (empty($row->recordid)) {
 854                     $row->recordid = $this->assignment->get_uniqueid_for_user($row->userid);
 855                 }
 856                 $urlparams['blindid'] = $row->recordid;
 857             } else {
 858                 $urlparams['userid'] = $row->userid;
 859             }
 860
 861             $url = new moodle_url('/mod/assign/view.php', $urlparams);
 862             $link = '<a href="' . $url . '" class="btn btn-primary">' . get_string('grade') . '</a>';
 863             $grade .= $link . $separator;
 864         }
 865
 866         $grade .= $this->display_grade($row->grade,
 867                                        $this->quickgrading && !$gradingdisabled,
 868                                        $row->userid,
 869                                        $row->timemarked);
 870
 871         return $grade;
 872     }
 873
 874     /**
 875      * Format a column of data for display.
 876      *
 877      * @param stdClass $row
 878      * @return string
 879      */
 880     public function col_finalgrade(stdClass $row) {
 881         $o = '';
 882
 883         $grade = $this->get_gradebook_data_for_user($row->userid);
 884         if ($grade) {
 885             $o = $this->display_grade($grade->grade, false, $row->userid, $row->timemarked);
 886         }
 887
 888         return $o;
 889     }
 890
 891     /**
 892      * Format a column of data for display.
 893      *
 894      * @param stdClass $row
 895      * @return string
 896      */
 897     public function col_timemarked(stdClass $row) {
 898         $o = '-';
 899
 900         if ($row->timemarked && $row->grade !== null && $row->grade >= 0) {
 901             $o = userdate($row->timemarked);
 902         }
 903         if ($row->timemarked && $this->is_downloading()) {
 904             // Force it for downloads as it affects import.
 905             $o = userdate($row->timemarked);
 906         }
 907
 908         return $o;
 909     }
 910
 911     /**
 912      * Format a column of data for display.
 913      *
 914      * @param stdClass $row
 915      * @return string
 916      */
 917     public function col_timesubmitted(stdClass $row) {
 918         $o = '-';
 919
 920         $group = false;
 921         $submission = false;
 922         $this->get_group_and_submission($row->id, $group, $submission, -1);
 923         if ($submission && $submission->timemodified && $submission->status != ASSIGN_SUBMISSION_STATUS_NEW) {
 924             $o = userdate($submission->timemodified);
 925         } else if ($row->timesubmitted && $row->status != ASSIGN_SUBMISSION_STATUS_NEW) {
 926             $o = userdate($row->timesubmitted);
 927         }
 928
 929         return $o;
 930     }
 931
 932     /**
 933      * Format a column of data for display
 934      *
 935      * @param stdClass $row
 936      * @return string
 937      */
 938     public function col_status(stdClass $row) {
 939         $o = '';
 940
 941         $instance = $this->assignment->get_instance();
 942
 943         $due = $instance->duedate;
 944         if ($row->extensionduedate) {
 945             $due = $row->extensionduedate;
 946         }
 947
 948         $group = false;
 949         $submission = false;
 950         $this->get_group_and_submission($row->id, $group, $submission, -1);
 951
 952         if ($instance->teamsubmission && !$group && !$instance->preventsubmissionnotingroup) {
 953             $group = true;
 954         }
 955
 956         if ($group && $submission) {
 957             $timesubmitted = $submission->timemodified;
 958             $status = $submission->status;
 959         } else {
 960             $timesubmitted = $row->timesubmitted;
 961             $status = $row->status;
 962         }
 963
 964         $displaystatus = $status;
 965         if ($displaystatus == 'new') {
 966             $displaystatus = '';
 967         }
 968
 969         if ($this->assignment->is_any_submission_plugin_enabled()) {
 970
 971             $o .= $this->output->container(get_string('submissionstatus_' . $displaystatus, 'assign'),
 972                                            array('class'=>'submissionstatus' .$displaystatus));
 973             if ($due && $timesubmitted > $due && $status != ASSIGN_SUBMISSION_STATUS_NEW) {
 974                 $usertime = format_time($timesubmitted - $due);
 975                 $latemessage = get_string('submittedlateshort',
 976                                           'assign',
 977                                           $usertime);
 978                 $o .= $this->output->container($latemessage, 'latesubmission');
 979             }
 980             if ($row->locked) {
 981                 $lockedstr = get_string('submissionslockedshort', 'assign');
 982                 $o .= $this->output->container($lockedstr, 'lockedsubmission');
 983             }
 984
 985             // Add status of "grading" if markflow is not enabled.
 986             if (!$instance->markingworkflow) {
 987                 if ($row->grade !== null && $row->grade >= 0) {
 988                     $o .= $this->output->container(get_string('graded', 'assign'), 'submissiongraded');
 989                 } else if (!$timesubmitted || $status == ASSIGN_SUBMISSION_STATUS_NEW) {
 990                     $now = time();
 991                     if ($due && ($now > $due)) {
 992                         $overduestr = get_string('overdue', 'assign', format_time($now - $due));
 993                         $o .= $this->output->container($overduestr, 'overduesubmission');
 994                     }
 995                 }
 996             }
 997         }
 998
 999         if ($instance->markingworkflow) {
1000             $o .= $this->col_workflowstatus($row);
1001         }
1002         if ($row->extensionduedate) {
1003             $userdate = userdate($row->extensionduedate);
1004             $extensionstr = get_string('userextensiondate', 'assign', $userdate);
1005             $o .= $this->output->container($extensionstr, 'extensiondate');
1006         }
1007
1008         if ($this->is_downloading()) {
1009             $o = strip_tags(rtrim(str_replace('</div>', ' - ', $o), '- '));
1010         }
1011
1012         return $o;
1013     }
1014
1015     /**
1016      * Format a column of data for display.
1017      *
1018      * @param stdClass $row
1019      * @return string
1020      */
1021     public function col_userid(stdClass $row) {
1022         global $USER;
1023
1024         $edit = '';
1025
1026         $actions = array();
1027
1028         $urlparams = array('id' => $this->assignment->get_course_module()->id,
1029                                'rownum' => 0,
1030                                'action' => 'grader');
1031
1032         if ($this->assignment->is_blind_marking()) {
1033             if (empty($row->recordid)) {
1034                 $row->recordid = $this->assignment->get_uniqueid_for_user($row->userid);
1035             }
1036             $urlparams['blindid'] = $row->recordid;
1037         } else {
1038             $urlparams['userid'] = $row->userid;
1039         }
1040         $url = new moodle_url('/mod/assign/view.php', $urlparams);
1041         $noimage = null;
1042
1043         if (!$row->grade) {
1044             $description = get_string('grade');
1045         } else {
1046             $description = get_string('updategrade', 'assign');
1047         }
1048         $actions['grade'] = new action_menu_link_secondary(
1049             $url,
1050             $noimage,
1051             $description
1052         );
1053
1054         // Everything we need is in the row.
1055         $submission = $row;
1056         $flags = $row;
1057         if ($this->assignment->get_instance()->teamsubmission) {
1058             // Use the cache for this.
1059             $submission = false;
1060             $group = false;
1061             $this->get_group_and_submission($row->id, $group, $submission, -1);
1062         }
1063
1064         $submissionsopen = $this->assignment->submissions_open($row->id,
1065                                                                true,
1066                                                                $submission,
1067                                                                $flags,
1068                                                                $this->gradinginfo);
1069         $caneditsubmission = $this->assignment->can_edit_submission($row->id, $USER->id);
1070
1071         // Hide for offline assignments.
1072         if ($this->assignment->is_any_submission_plugin_enabled()) {
1073             if (!$row->status ||
1074                     $row->status == ASSIGN_SUBMISSION_STATUS_DRAFT ||
1075                     !$this->assignment->get_instance()->submissiondrafts) {
1076
1077                 if (!$row->locked) {
1078                     $urlparams = array('id' => $this->assignment->get_course_module()->id,
1079                                        'userid'=>$row->id,
1080                                        'action'=>'lock',
1081                                        'sesskey'=>sesskey(),
1082                                        'page'=>$this->currpage);
1083                     $url = new moodle_url('/mod/assign/view.php', $urlparams);
1084
1085                     $description = get_string('preventsubmissionsshort', 'assign');
1086                     $actions['lock'] = new action_menu_link_secondary(
1087                         $url,
1088                         $noimage,
1089                         $description
1090                     );
1091                 } else {
1092                     $urlparams = array('id' => $this->assignment->get_course_module()->id,
1093                                        'userid'=>$row->id,
1094                                        'action'=>'unlock',
1095                                        'sesskey'=>sesskey(),
1096                                        'page'=>$this->currpage);
1097                     $url = new moodle_url('/mod/assign/view.php', $urlparams);
1098                     $description = get_string('allowsubmissionsshort', 'assign');
1099                     $actions['unlock'] = new action_menu_link_secondary(
1100                         $url,
1101                         $noimage,
1102                         $description
1103                     );
1104                 }
1105             }
1106
1107             if ($submissionsopen &&
1108                     $USER->id != $row->id &&
1109                     $caneditsubmission) {
1110                 $urlparams = array('id' => $this->assignment->get_course_module()->id,
1111                                    'userid'=>$row->id,
1112                                    'action'=>'editsubmission',
1113                                    'sesskey'=>sesskey(),
1114                                    'page'=>$this->currpage);
1115                 $url = new moodle_url('/mod/assign/view.php', $urlparams);
1116                 $description = get_string('editsubmission', 'assign');
1117                 $actions['editsubmission'] = new action_menu_link_secondary(
1118                     $url,
1119                     $noimage,
1120                     $description
1121                 );
1122             }
1123         }
1124         if (($this->assignment->get_instance()->duedate ||
1125                 $this->assignment->get_instance()->cutoffdate) &&
1126                 $this->hasgrantextension) {
1127              $urlparams = array('id' => $this->assignment->get_course_module()->id,
1128                                 'userid' => $row->id,
1129                                 'action' => 'grantextension',
1130                                 'sesskey' => sesskey(),
1131                                 'page' => $this->currpage);
1132              $url = new moodle_url('/mod/assign/view.php', $urlparams);
1133              $description = get_string('grantextension', 'assign');
1134              $actions['grantextension'] = new action_menu_link_secondary(
1135                  $url,
1136                  $noimage,
1137                  $description
1138              );
1139         }
1140         if ($row->status == ASSIGN_SUBMISSION_STATUS_SUBMITTED &&
1141                 $this->assignment->get_instance()->submissiondrafts) {
1142             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1143                                'userid'=>$row->id,
1144                                'action'=>'reverttodraft',
1145                                'sesskey'=>sesskey(),
1146                                'page'=>$this->currpage);
1147             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1148             $description = get_string('reverttodraftshort', 'assign');
1149             $actions['reverttodraft'] = new action_menu_link_secondary(
1150                 $url,
1151                 $noimage,
1152                 $description
1153             );
1154         }
1155         if ($row->status == ASSIGN_SUBMISSION_STATUS_DRAFT &&
1156                 $this->assignment->get_instance()->submissiondrafts &&
1157                 $caneditsubmission &&
1158                 $submissionsopen &&
1159                 $row->id != $USER->id) {
1160             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1161                                'userid'=>$row->id,
1162                                'action'=>'submitotherforgrading',
1163                                'sesskey'=>sesskey(),
1164                                'page'=>$this->currpage);
1165             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1166             $description = get_string('submitforgrading', 'assign');
1167             $actions['submitforgrading'] = new action_menu_link_secondary(
1168                 $url,
1169                 $noimage,
1170                 $description
1171             );
1172         }
1173
1174         $ismanual = $this->assignment->get_instance()->attemptreopenmethod == ASSIGN_ATTEMPT_REOPEN_METHOD_MANUAL;
1175         $hassubmission = !empty($row->status);
1176         $notreopened = $hassubmission && $row->status != ASSIGN_SUBMISSION_STATUS_REOPENED;
1177         $isunlimited = $this->assignment->get_instance()->maxattempts == ASSIGN_UNLIMITED_ATTEMPTS;
1178         $hasattempts = $isunlimited || $row->attemptnumber < $this->assignment->get_instance()->maxattempts - 1;
1179
1180         if ($ismanual && $hassubmission && $notreopened && $hasattempts) {
1181             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1182                                'userid'=>$row->id,
1183                                'action'=>'addattempt',
1184                                'sesskey'=>sesskey(),
1185                                'page'=>$this->currpage);
1186             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1187             $description = get_string('addattempt', 'assign');
1188             $actions['addattempt'] = new action_menu_link_secondary(
1189                 $url,
1190                 $noimage,
1191                 $description
1192             );
1193         }
1194
1195         $menu = new action_menu();
1196         $menu->set_owner_selector('.gradingtable-actionmenu');
1197         $menu->set_alignment(action_menu::TL, action_menu::BL);
1198         $menu->set_constraint('.gradingtable > .no-overflow');
1199         $menu->set_menu_trigger(get_string('edit'));
1200         foreach ($actions as $action) {
1201             $menu->add($action);
1202         }
1203
1204         // Prioritise the menu ahead of all other actions.
1205         $menu->prioritise = true;
1206
1207         $edit .= $this->output->render($menu);
1208
1209         return $edit;
1210     }
1211
1212     /**
1213      * Write the plugin summary with an optional link to view the full feedback/submission.
1214      *
1215      * @param assign_plugin $plugin Submission plugin or feedback plugin
1216      * @param stdClass $item Submission or grade
1217      * @param string $returnaction The return action to pass to the
1218      *                             view_submission page (the current page)
1219      * @param string $returnparams The return params to pass to the view_submission
1220      *                             page (the current page)
1221      * @return string The summary with an optional link
1222      */
1223     private function format_plugin_summary_with_link(assign_plugin $plugin,
1224                                                      stdClass $item,
1225                                                      $returnaction,
1226                                                      $returnparams) {
1227         $link = '';
1228         $showviewlink = false;
1229
1230         $summary = $plugin->view_summary($item, $showviewlink);
1231         $separator = '';
1232         if ($showviewlink) {
1233             $viewstr = get_string('view' . substr($plugin->get_subtype(), strlen('assign')), 'assign');
1234             $icon = $this->output->pix_icon('t/preview', $viewstr);
1235             $urlparams = array('id' => $this->assignment->get_course_module()->id,
1236                                                      'sid'=>$item->id,
1237                                                      'gid'=>$item->id,
1238                                                      'plugin'=>$plugin->get_type(),
1239                                                      'action'=>'viewplugin' . $plugin->get_subtype(),
1240                                                      'returnaction'=>$returnaction,
1241                                                      'returnparams'=>http_build_query($returnparams));
1242             $url = new moodle_url('/mod/assign/view.php', $urlparams);
1243             $link = $this->output->action_link($url, $icon);
1244             $separator = $this->output->spacer(array(), true);
1245         }
1246
1247         return $link . $separator . $summary;
1248     }
1249
1250
1251     /**
1252      * Format the submission and feedback columns.
1253      *
1254      * @param string $colname The column name
1255      * @param stdClass $row The submission row
1256      * @return mixed string or NULL
1257      */
1258     public function other_cols($colname, $row) {
1259         // For extra user fields the result is already in $row.
1260         if (empty($this->plugincache[$colname])) {
1261             return $row->$colname;
1262         }
1263
1264         // This must be a plugin field.
1265         $plugincache = $this->plugincache[$colname];
1266
1267         $plugin = $plugincache[0];
1268
1269         $field = null;
1270         if (isset($plugincache[1])) {
1271             $field = $plugincache[1];
1272         }
1273
1274         if ($plugin->is_visible() && $plugin->is_enabled()) {
1275             if ($plugin->get_subtype() == 'assignsubmission') {
1276                 if ($this->assignment->get_instance()->teamsubmission) {
1277                     $group = false;
1278                     $submission = false;
1279
1280                     $this->get_group_and_submission($row->id, $group, $submission, -1);
1281                     if ($submission) {
1282                         if ($submission->status == ASSIGN_SUBMISSION_STATUS_REOPENED) {
1283                             // For a newly reopened submission - we want to show the previous submission in the table.
1284                             $this->get_group_and_submission($row->id, $group, $submission, $submission->attemptnumber-1);
1285                         }
1286                         if (isset($field)) {
1287                             return $plugin->get_editor_text($field, $submission->id);
1288                         }
1289                         return $this->format_plugin_summary_with_link($plugin,
1290                                                                       $submission,
1291                                                                       'grading',
1292                                                                       array());
1293                     }
1294                 } else if ($row->submissionid) {
1295                     if ($row->status == ASSIGN_SUBMISSION_STATUS_REOPENED) {
1296                         // For a newly reopened submission - we want to show the previous submission in the table.
1297                         $submission = $this->assignment->get_user_submission($row->userid, false, $row->attemptnumber - 1);
1298                     } else {
1299                         $submission = new stdClass();
1300                         $submission->id = $row->submissionid;
1301                         $submission->timecreated = $row->firstsubmission;
1302                         $submission->timemodified = $row->timesubmitted;
1303                         $submission->assignment = $this->assignment->get_instance()->id;
1304                         $submission->userid = $row->userid;
1305                         $submission->attemptnumber = $row->attemptnumber;
1306                     }
1307                     // Field is used for only for import/export and refers the the fieldname for the text editor.
1308                     if (isset($field)) {
1309                         return $plugin->get_editor_text($field, $submission->id);
1310                     }
1311                     return $this->format_plugin_summary_with_link($plugin,
1312                                                                   $submission,
1313                                                                   'grading',
1314                                                                   array());
1315                 }
1316             } else {
1317                 $grade = null;
1318                 if (isset($field)) {
1319                     return $plugin->get_editor_text($field, $row->gradeid);
1320                 }
1321
1322                 if ($row->gradeid) {
1323                     $grade = new stdClass();
1324                     $grade->id = $row->gradeid;
1325                     $grade->timecreated = $row->firstmarked;
1326                     $grade->timemodified = $row->timemarked;
1327                     $grade->assignment = $this->assignment->get_instance()->id;
1328                     $grade->userid = $row->userid;
1329                     $grade->grade = $row->grade;
1330                     $grade->mailed = $row->mailed;
1331                     $grade->attemptnumber = $row->attemptnumber;
1332                 }
1333                 if ($this->quickgrading && $plugin->supports_quickgrading()) {
1334                     return $plugin->get_quickgrading_html($row->userid, $grade);
1335                 } else if ($grade) {
1336                     return $this->format_plugin_summary_with_link($plugin,
1337                                                                   $grade,
1338                                                                   'grading',
1339                                                                   array());
1340                 }
1341             }
1342         }
1343         return '';
1344     }
1345
1346     /**
1347      * Using the current filtering and sorting - load all rows and return a single column from them.
1348      *
1349      * @param string $columnname The name of the raw column data
1350      * @return array of data
1351      */
1352     public function get_column_data($columnname) {
1353         $this->setup();
1354         $this->currpage = 0;
1355         $this->query_db($this->tablemaxrows);
1356         $result = array();
1357         foreach ($this->rawdata as $row) {
1358             $result[] = $row->$columnname;
1359         }
1360         return $result;
1361     }
1362
1363     /**
1364      * Return things to the renderer.
1365      *
1366      * @return string the assignment name
1367      */
1368     public function get_assignment_name() {
1369         return $this->assignment->get_instance()->name;
1370     }
1371
1372     /**
1373      * Return things to the renderer.
1374      *
1375      * @return int the course module id
1376      */
1377     public function get_course_module_id() {
1378         return $this->assignment->get_course_module()->id;
1379     }
1380
1381     /**
1382      * Return things to the renderer.
1383      *
1384      * @return int the course id
1385      */
1386     public function get_course_id() {
1387         return $this->assignment->get_course()->id;
1388     }
1389
1390     /**
1391      * Return things to the renderer.
1392      *
1393      * @return stdClass The course context
1394      */
1395     public function get_course_context() {
1396         return $this->assignment->get_course_context();
1397     }
1398
1399     /**
1400      * Return things to the renderer.
1401      *
1402      * @return bool Does this assignment accept submissions
1403      */
1404     public function submissions_enabled() {
1405         return $this->assignment->is_any_submission_plugin_enabled();
1406     }
1407
1408     /**
1409      * Return things to the renderer.
1410      *
1411      * @return bool Can this user view all grades (the gradebook)
1412      */
1413     public function can_view_all_grades() {
1414         $context = $this->assignment->get_course_context();
1415         return has_capability('gradereport/grader:view', $context) &&
1416                has_capability('moodle/grade:viewall', $context);
1417     }
1418
1419     /**
1420      * Always return a valid sort - even if the userid column is missing.
1421      * @return array column name => SORT_... constant.
1422      */
1423     public function get_sort_columns() {
1424         $result = parent::get_sort_columns();
1425
1426         $assignment = $this->assignment->get_instance();
1427         if (empty($assignment->blindmarking)) {
1428             $result = array_merge($result, array('userid' => SORT_ASC));
1429         } else {
1430             $result = array_merge($result, [
1431                     'COALESCE(s.timecreated, '  . time()        . ')'   => SORT_ASC,
1432                     'COALESCE(s.id, '           . PHP_INT_MAX   . ')'   => SORT_ASC,
1433                     'um.id'                                             => SORT_ASC,
1434                 ]);
1435         }
1436         return $result;
1437     }
1438
1439     /**
1440      * Override the table show_hide_link to not show for select column.
1441      *
1442      * @param string $column the column name, index into various names.
1443      * @param int $index numerical index of the column.
1444      * @return string HTML fragment.
1445      */
1446     protected function show_hide_link($column, $index) {
1447         if ($index > 0 || !$this->hasgrade) {
1448             return parent::show_hide_link($column, $index);
1449         }
1450         return '';
1451     }
1452
1453     /**
1454      * Overides setup to ensure it will only run a single time.
1455      */
1456     public function setup() {
1457         // Check if the setup function has been called before, we should not run it twice.
1458         // If we do the sortorder of the table will be broken.
1459         if (!empty($this->setup)) {
1460             return;
1461         }
1462         parent::setup();
1463     }
1464 }