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<?php// This file is part of Moodle - http://moodle.org///// Moodle is free software: you can redistribute it and/or modify// it under the terms of the GNU General Public License as published by// the Free Software Foundation, either version 3 of the License, or// (at your option) any later version.//// Moodle is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the// GNU General Public License for more details.//// You should have received a copy of the GNU General Public License// along with Moodle. If not, see <http://www.gnu.org/licenses/>./*** This file contains the definition for the grading table which subclassses easy_table** @package mod_assign* @copyright 2012 NetSpot {@link http://www.netspot.com.au}* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later*/defined('MOODLE_INTERNAL') || die();require_once($CFG->libdir.'/tablelib.php');require_once($CFG->libdir.'/gradelib.php');require_once($CFG->dirroot.'/mod/assign/locallib.php');/*** Extends table_sql to provide a table of assignment submissions** @package mod_assign* @copyright 2012 NetSpot {@link http://www.netspot.com.au}* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later*/class assign_grading_table extends table_sql implements renderable {/** @var assign $assignment */private $assignment = null;/** @var int $perpage */private $perpage = 10;/** @var int $rownum (global index of current row in table) */private $rownum = -1;/** @var renderer_base for getting output */private $output = null;/** @var stdClass gradinginfo */private $gradinginfo = null;/** @var int $tablemaxrows */private $tablemaxrows = 10000;/** @var boolean $quickgrading */private $quickgrading = false;/** @var boolean $hasgrantextension - Only do the capability check once for the entire table */private $hasgrantextension = false;/** @var boolean $hasgrade - Only do the capability check once for the entire table */private $hasgrade = false;/** @var array $groupsubmissions - A static cache of group submissions */private $groupsubmissions = array();/** @var array $submissiongroups - A static cache of submission groups */private $submissiongroups = array();/** @var string $plugingradingbatchoperations - List of plugin supported batch operations */public $plugingradingbatchoperations = array();/** @var array $plugincache - A cache of plugin lookups to match a column name to a plugin efficiently */private $plugincache = array();/** @var array $scale - A list of the keys and descriptions for the custom scale */private $scale = null;/** @var bool true if the user has this capability. Otherwise false. */private $hasviewblind;/*** overridden constructor keeps a reference to the assignment class that is displaying this table** @param assign $assignment The assignment class* @param int $perpage how many per page* @param string $filter The current filter* @param int $rowoffset For showing a subsequent page of results* @param bool $quickgrading Is this table wrapped in a quickgrading form?* @param string $downloadfilename*/public function __construct(assign $assignment,$perpage,$filter,$rowoffset,$quickgrading,$downloadfilename = null) {global $CFG, $PAGE, $DB, $USER;parent::__construct('mod_assign_grading-' . $assignment->get_context()->id);$this->is_persistent(true);$this->assignment = $assignment;// Check permissions up front.$this->hasgrantextension = has_capability('mod/assign:grantextension',$this->assignment->get_context());$this->hasgrade = $this->assignment->can_grade();// Check if we have the elevated view capablities to see the blind details.$this->hasviewblind = has_capability('mod/assign:viewblinddetails',$this->assignment->get_context());foreach ($assignment->get_feedback_plugins() as $plugin) {if ($plugin->is_visible() && $plugin->is_enabled()) {foreach ($plugin->get_grading_batch_operations() as $action => $description) {if (empty($this->plugingradingbatchoperations)) {$this->plugingradingbatchoperations[$plugin->get_type()] = array();}$this->plugingradingbatchoperations[$plugin->get_type()][$action] = $description;}}}$this->perpage = $perpage;$this->quickgrading = $quickgrading && $this->hasgrade;$this->output = $PAGE->get_renderer('mod_assign');$urlparams = array('action' => 'grading', 'id' => $assignment->get_course_module()->id);$url = new moodle_url($CFG->wwwroot . '/mod/assign/view.php', $urlparams);$this->define_baseurl($url);// Do some business - then set the sql.$currentgroup = groups_get_activity_group($assignment->get_course_module(), true);if ($rowoffset) {$this->rownum = $rowoffset - 1;}$users = array_keys( $assignment->list_participants($currentgroup, true));if (count($users) == 0) {// Insert a record that will never match to the sql is still valid.$users[] = -1;}$params = array();$params['assignmentid1'] = (int)$this->assignment->get_instance()->id;$params['assignmentid2'] = (int)$this->assignment->get_instance()->id;$params['assignmentid3'] = (int)$this->assignment->get_instance()->id;$params['newstatus'] = ASSIGN_SUBMISSION_STATUS_NEW;// TODO Does not support custom user profile fields (MDL-70456).$userfieldsapi = \core_user\fields::for_identity($this->assignment->get_context(), false)->with_userpic();$userfields = $userfieldsapi->get_sql('u', false, '', '', false)->selects;$extrauserfields = $userfieldsapi->get_required_fields([\core_user\fields::PURPOSE_IDENTITY]);$fields = $userfields . ', ';$fields .= 'u.id as userid, ';$fields .= 's.status as status, ';$fields .= 's.id as submissionid, ';$fields .= 's.timecreated as firstsubmission, ';$fields .= "CASE WHEN status <> :newstatus THEN s.timemodified ELSE NULL END as timesubmitted, ";$fields .= 's.attemptnumber as attemptnumber, ';$fields .= 'g.id as gradeid, ';$fields .= 'g.grade as grade, ';$fields .= 'g.timemodified as timemarked, ';$fields .= 'g.timecreated as firstmarked, ';$fields .= 'uf.mailed as mailed, ';$fields .= 'uf.locked as locked, ';$fields .= 'uf.extensionduedate as extensionduedate, ';$fields .= 'uf.workflowstate as workflowstate, ';$fields .= 'uf.allocatedmarker as allocatedmarker';$from = '{user} uLEFT JOIN {assign_submission} sON u.id = s.useridAND s.assignment = :assignmentid1AND s.latest = 1 ';// For group assignments, there can be a grade with no submission.$from .= ' LEFT JOIN {assign_grades} gON g.assignment = :assignmentid2AND u.id = g.useridAND (g.attemptnumber = s.attemptnumber OR s.attemptnumber IS NULL) ';$from .= 'LEFT JOIN {assign_user_flags} ufON u.id = uf.useridAND uf.assignment = :assignmentid3 ';if ($this->assignment->get_course()->relativedatesmode) {$params['courseid1'] = $this->assignment->get_course()->id;$from .= ' LEFT JOIN (SELECT ue1.userid as enroluserid,CASE WHEN MIN(ue1.timestart - c2.startdate) < 0 THEN 0 ELSE MIN(ue1.timestart - c2.startdate) END as enrolstartoffsetFROM {enrol} e1JOIN {user_enrolments} ue1ON (ue1.enrolid = e1.id AND ue1.status = 0)JOIN {course} c2ON c2.id = e1.courseidWHERE e1.courseid = :courseid1 AND e1.status = 0GROUP BY ue1.userid) enroloffsetON (enroloffset.enroluserid = u.id) ';}$hasoverrides = $this->assignment->has_overrides();$inrelativedatesmode = $this->assignment->get_course()->relativedatesmode;if ($hasoverrides) {$params['assignmentid5'] = (int)$this->assignment->get_instance()->id;$params['assignmentid6'] = (int)$this->assignment->get_instance()->id;$params['assignmentid7'] = (int)$this->assignment->get_instance()->id;$params['assignmentid8'] = (int)$this->assignment->get_instance()->id;$params['assignmentid9'] = (int)$this->assignment->get_instance()->id;list($userwhere1, $userparams1) = $DB->get_in_or_equal($users, SQL_PARAMS_NAMED, 'priorityuser');list($userwhere2, $userparams2) = $DB->get_in_or_equal($users, SQL_PARAMS_NAMED, 'effectiveuser');$userwhere1 = "WHERE u.id {$userwhere1}";$userwhere2 = "WHERE u.id {$userwhere2}";$params = array_merge($params, $userparams1);$params = array_merge($params, $userparams2);$fields .= ', priority.priority, ';$fields .= 'effective.allowsubmissionsfromdate, ';if ($inrelativedatesmode) {// If the priority is less than the 9999999 constant value it means it's an override// and we should use that value directly. Otherwise we need to apply the uesr's course// start date offset.$fields .= 'CASE WHEN priority.priority < 9999999 THEN effective.duedate ELSE' .' effective.duedate + enroloffset.enrolstartoffset END as duedate, ';} else {$fields .= 'effective.duedate, ';}$fields .= 'effective.cutoffdate ';$from .= ' LEFT JOIN (SELECT merged.userid, min(merged.priority) priority FROM (( SELECT u.id as userid, 9999999 AS priorityFROM {user} u '.$userwhere1.')UNION( SELECT uo.userid, 0 AS priorityFROM {assign_overrides} uoWHERE uo.assignid = :assignmentid5)UNION( SELECT gm.userid, go.sortorder AS priorityFROM {assign_overrides} goJOIN {groups} g ON g.id = go.groupidJOIN {groups_members} gm ON gm.groupid = g.idWHERE go.assignid = :assignmentid6)) mergedGROUP BY merged.userid) priority ON priority.userid = u.idJOIN ((SELECT 9999999 AS priority,u.id AS userid,a.allowsubmissionsfromdate,a.duedate,a.cutoffdateFROM {user} uJOIN {assign} a ON a.id = :assignmentid7'.$userwhere2.')UNION(SELECT 0 AS priority,uo.userid,uo.allowsubmissionsfromdate,uo.duedate,uo.cutoffdateFROM {assign_overrides} uoWHERE uo.assignid = :assignmentid8)UNION(SELECT go.sortorder AS priority,gm.userid,go.allowsubmissionsfromdate,go.duedate,go.cutoffdateFROM {assign_overrides} goJOIN {groups} g ON g.id = go.groupidJOIN {groups_members} gm ON gm.groupid = g.idWHERE go.assignid = :assignmentid9)) effective ON effective.priority = priority.priority AND effective.userid = priority.userid ';} else if ($inrelativedatesmode) {// In relative dates mode and when we don't have overrides, include the// duedate, cutoffdate and allowsubmissionsfrom date anyway as this information is useful and can vary.$params['assignmentid5'] = (int)$this->assignment->get_instance()->id;$fields .= ', a.duedate + enroloffset.enrolstartoffset as duedate, ';$fields .= 'a.allowsubmissionsfromdate, ';$fields .= 'a.cutoffdate ';$from .= 'JOIN {assign} a ON a.id = :assignmentid5 ';}if (!empty($this->assignment->get_instance()->blindmarking)) {$from .= 'LEFT JOIN {assign_user_mapping} umON u.id = um.useridAND um.assignment = :assignmentidblind ';$params['assignmentidblind'] = (int)$this->assignment->get_instance()->id;$fields .= ', um.id as recordid ';}$userparams3 = array();$userindex = 0;list($userwhere3, $userparams3) = $DB->get_in_or_equal($users, SQL_PARAMS_NAMED, 'user');$where = 'u.id ' . $userwhere3;$params = array_merge($params, $userparams3);// The filters do not make sense when there are no submissions, so do not apply them.if ($this->assignment->is_any_submission_plugin_enabled()) {if ($filter == ASSIGN_FILTER_SUBMITTED) {$where .= ' AND (s.timemodified IS NOT NULL ANDs.status = :submitted) ';$params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;} else if ($filter == ASSIGN_FILTER_NOT_SUBMITTED) {$where .= ' AND (s.timemodified IS NULL OR s.status <> :submitted) ';$params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;} else if ($filter == ASSIGN_FILTER_REQUIRE_GRADING) {$where .= ' AND (s.timemodified IS NOT NULL ANDs.status = :submitted AND(s.timemodified >= g.timemodified OR g.timemodified IS NULL OR g.grade IS NULL';// Assignment grade is set to the negative grade scale id when scales are used.if ($this->assignment->get_instance()->grade < 0) {// Scale grades are set to -1 when not graded.$where .= ' OR g.grade = -1';}$where .= '))';$params['submitted'] = ASSIGN_SUBMISSION_STATUS_SUBMITTED;} else if ($filter == ASSIGN_FILTER_GRANTED_EXTENSION) {$where .= ' AND uf.extensionduedate > 0 ';} else if (strpos($filter, ASSIGN_FILTER_SINGLE_USER) === 0) {$userfilter = (int) array_pop(explode('=', $filter));$where .= ' AND (u.id = :userid)';$params['userid'] = $userfilter;} else if ($filter == ASSIGN_FILTER_DRAFT) {$where .= ' AND (s.timemodified IS NOT NULL ANDs.status = :draft) ';$params['draft'] = ASSIGN_SUBMISSION_STATUS_DRAFT;}}if ($this->assignment->get_instance()->markingworkflow &&$this->assignment->get_instance()->markingallocation) {if (has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {// Check to see if marker filter is set.$markerfilter = (int)get_user_preferences('assign_markerfilter', '');if (!empty($markerfilter)) {if ($markerfilter == ASSIGN_MARKER_FILTER_NO_MARKER) {$where .= ' AND (uf.allocatedmarker IS NULL OR uf.allocatedmarker = 0)';} else {$where .= ' AND uf.allocatedmarker = :markerid';$params['markerid'] = $markerfilter;}}}}if ($this->assignment->get_instance()->markingworkflow) {$workflowstates = $this->assignment->get_marking_workflow_states_for_current_user();if (!empty($workflowstates)) {$workflowfilter = get_user_preferences('assign_workflowfilter', '');if ($workflowfilter == ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED) {$where .= ' AND (uf.workflowstate = :workflowstate OR uf.workflowstate IS NULL OR '.$DB->sql_isempty('assign_user_flags', 'workflowstate', true, true).')';$params['workflowstate'] = $workflowfilter;} else if (array_key_exists($workflowfilter, $workflowstates)) {$where .= ' AND uf.workflowstate = :workflowstate';$params['workflowstate'] = $workflowfilter;}}}$this->set_sql($fields, $from, $where, $params);if ($downloadfilename) {$this->is_downloading('csv', $downloadfilename);}$columns = array();$headers = array();// Select.if (!$this->is_downloading() && $this->hasgrade) {$columns[] = 'select';$headers[] = get_string('select') .'<div class="selectall"><label class="accesshide" for="selectall">' . get_string('selectall') . '</label><input type="checkbox" id="selectall" name="selectall" title="' . get_string('selectall') . '"/></div>';}// User picture.if ($this->hasviewblind || !$this->assignment->is_blind_marking()) {if (!$this->is_downloading()) {$columns[] = 'picture';$headers[] = get_string('pictureofuser');} else {$columns[] = 'recordid';$headers[] = get_string('recordid', 'assign');}// Fullname.$columns[] = 'fullname';$headers[] = get_string('fullname');// Participant # details if can view real identities.if ($this->assignment->is_blind_marking()) {if (!$this->is_downloading()) {$columns[] = 'recordid';$headers[] = get_string('recordid', 'assign');}}foreach ($extrauserfields as $extrafield) {$columns[] = $extrafield;$headers[] = \core_user\fields::get_display_name($extrafield);}} else {// Record ID.$columns[] = 'recordid';$headers[] = get_string('recordid', 'assign');}// Submission status.$columns[] = 'status';$headers[] = get_string('status', 'assign');if ($hasoverrides || $inrelativedatesmode) {// Allowsubmissionsfromdate.$columns[] = 'allowsubmissionsfromdate';$headers[] = get_string('allowsubmissionsfromdate', 'assign');// Duedate.$columns[] = 'duedate';$headers[] = get_string('duedate', 'assign');// Cutoffdate.$columns[] = 'cutoffdate';$headers[] = get_string('cutoffdate', 'assign');}// Team submission columns.if ($assignment->get_instance()->teamsubmission) {$columns[] = 'team';$headers[] = get_string('submissionteam', 'assign');}// Allocated marker.if ($this->assignment->get_instance()->markingworkflow &&$this->assignment->get_instance()->markingallocation &&has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {// Add a column for the allocated marker.$columns[] = 'allocatedmarker';$headers[] = get_string('marker', 'assign');}// Grade.$columns[] = 'grade';$headers[] = get_string('gradenoun');if ($this->is_downloading()) {$gradetype = $this->assignment->get_instance()->grade;if ($gradetype > 0) {$columns[] = 'grademax';$headers[] = get_string('maxgrade', 'assign');} else if ($gradetype < 0) {// This is a custom scale.$columns[] = 'scale';$headers[] = get_string('scale', 'assign');}if ($this->assignment->get_instance()->markingworkflow) {// Add a column for the marking workflow state.$columns[] = 'workflowstate';$headers[] = get_string('markingworkflowstate', 'assign');}// Add a column to show if this grade can be changed.$columns[] = 'gradecanbechanged';$headers[] = get_string('gradecanbechanged', 'assign');}if (!$this->is_downloading() && $this->hasgrade) {// We have to call this column userid so we can use userid as a default sortable column.$columns[] = 'userid';$headers[] = get_string('edit');}// Submission plugins.if ($assignment->is_any_submission_plugin_enabled()) {$columns[] = 'timesubmitted';$headers[] = get_string('lastmodifiedsubmission', 'assign');foreach ($this->assignment->get_submission_plugins() as $plugin) {if ($this->is_downloading()) {if ($plugin->is_visible() && $plugin->is_enabled()) {foreach ($plugin->get_editor_fields() as $field => $description) {$index = 'plugin' . count($this->plugincache);$this->plugincache[$index] = array($plugin, $field);$columns[] = $index;$headers[] = $plugin->get_name();}}} else {if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {$index = 'plugin' . count($this->plugincache);$this->plugincache[$index] = array($plugin);$columns[] = $index;$headers[] = $plugin->get_name();}}}}// Time marked.$columns[] = 'timemarked';$headers[] = get_string('lastmodifiedgrade', 'assign');// Feedback plugins.foreach ($this->assignment->get_feedback_plugins() as $plugin) {if ($this->is_downloading()) {if ($plugin->is_visible() && $plugin->is_enabled()) {foreach ($plugin->get_editor_fields() as $field => $description) {$index = 'plugin' . count($this->plugincache);$this->plugincache[$index] = array($plugin, $field);$columns[] = $index;$headers[] = $description;}}} else if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {$index = 'plugin' . count($this->plugincache);$this->plugincache[$index] = array($plugin);$columns[] = $index;$headers[] = $plugin->get_name();}}// Exclude 'Final grade' column in downloaded grading worksheets.if (!$this->is_downloading()) {// Final grade.$columns[] = 'finalgrade';$headers[] = get_string('finalgrade', 'grades');}// Load the grading info for all users.$this->gradinginfo = grade_get_grades($this->assignment->get_course()->id,'mod','assign',$this->assignment->get_instance()->id,$users);if (!empty($CFG->enableoutcomes) && !empty($this->gradinginfo->outcomes)) {$columns[] = 'outcomes';$headers[] = get_string('outcomes', 'grades');}// Set the columns.$this->define_columns($columns);$this->define_headers($headers);foreach ($extrauserfields as $extrafield) {$this->column_class($extrafield, $extrafield);}$this->no_sorting('recordid');$this->no_sorting('finalgrade');$this->no_sorting('userid');$this->no_sorting('select');$this->no_sorting('outcomes');if ($assignment->get_instance()->teamsubmission) {$this->no_sorting('team');}$plugincolumnindex = 0;foreach ($this->assignment->get_submission_plugins() as $plugin) {if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {$submissionpluginindex = 'plugin' . $plugincolumnindex++;$this->no_sorting($submissionpluginindex);}}foreach ($this->assignment->get_feedback_plugins() as $plugin) {if ($plugin->is_visible() && $plugin->is_enabled() && $plugin->has_user_summary()) {$feedbackpluginindex = 'plugin' . $plugincolumnindex++;$this->no_sorting($feedbackpluginindex);}}// When there is no data we still want the column headers printed in the csv file.if ($this->is_downloading()) {$this->start_output();}}/*** Before adding each row to the table make sure rownum is incremented.** @param array $row row of data from db used to make one row of the table.* @return array one row for the table*/public function format_row($row) {if ($this->rownum < 0) {$this->rownum = $this->currpage * $this->pagesize;} else {$this->rownum += 1;}return parent::format_row($row);}/*** Add a column with an ID that uniquely identifies this user in this assignment.** @param stdClass $row* @return string*/public function col_recordid(stdClass $row) {if (empty($row->recordid)) {$row->recordid = $this->assignment->get_uniqueid_for_user($row->userid);}return get_string('hiddenuser', 'assign') . $row->recordid;}/*** Add the userid to the row class so it can be updated via ajax.** @param stdClass $row The row of data* @return string The row class*/public function get_row_class($row) {return 'user' . $row->userid;}/*** Return the number of rows to display on a single page.** @return int The number of rows per page*/public function get_rows_per_page() {return $this->perpage;}/*** list current marking workflow state** @param stdClass $row* @return string*/public function col_workflowstatus(stdClass $row) {$o = '';$gradingdisabled = $this->assignment->grading_disabled($row->id, true, $this->gradinginfo);// The function in the assignment keeps a static cache of this list of states.$workflowstates = $this->assignment->get_marking_workflow_states_for_current_user();$workflowstate = $row->workflowstate;if (empty($workflowstate)) {$workflowstate = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED;}if ($this->quickgrading && !$gradingdisabled) {$notmarked = get_string('markingworkflowstatenotmarked', 'assign');$name = 'quickgrade_' . $row->id . '_workflowstate';if ($workflowstate !== ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED && !array_key_exists($workflowstate, $workflowstates)) {$allworkflowstates = $this->assignment->get_all_marking_workflow_states();$o .= html_writer::div($allworkflowstates[$workflowstate]);} else {$o .= html_writer::select($workflowstates, $name, $workflowstate, ['' => $notmarked]);// Check if this user is a marker that can't manage allocations and doesn't have the marker column added.if ($this->assignment->get_instance()->markingworkflow &&$this->assignment->get_instance()->markingallocation &&!has_capability('mod/assign:manageallocations', $this->assignment->get_context())) {$name = 'quickgrade_' . $row->id . '_allocatedmarker';$o .= html_writer::empty_tag('input', ['type' => 'hidden', 'name' => $name,'value' => $row->allocatedmarker]);}}} else {$o .= $this->output->container(get_string('markingworkflowstate' . $workflowstate, 'assign'), $workflowstate);}return $o;}/*** For download only - list current marking workflow state** @param stdClass $row - The row of data* @return string The current marking workflow state*/public function col_workflowstate($row) {$state = $row->workflowstate;if (empty($state)) {$state = ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED;}return get_string('markingworkflowstate' . $state, 'assign');}/*** list current marker** @param stdClass $row - The row of data* @return id the user->id of the marker.*/public function col_allocatedmarker(stdClass $row) {static $markers = null;static $markerlist = array();if ($markers === null) {list($sort, $params) = users_order_by_sql('u');// Only enrolled users could be assigned as potential markers.$markers = get_enrolled_users($this->assignment->get_context(), 'mod/assign:grade', 0, 'u.*', $sort);$markerlist[0] = get_string('choosemarker', 'assign');$viewfullnames = has_capability('moodle/site:viewfullnames', $this->assignment->get_context());foreach ($markers as $marker) {$markerlist[$marker->id] = fullname($marker, $viewfullnames);}}if (empty($markerlist)) {// TODO: add some form of notification here that no markers are available.return '';}if ($this->is_downloading()) {if (isset($markers[$row->allocatedmarker])) {return fullname($markers[$row->allocatedmarker],has_capability('moodle/site:viewfullnames', $this->assignment->get_context()));} else {return '';}}if ($this->quickgrading && has_capability('mod/assign:manageallocations', $this->assignment->get_context()) &&(empty($row->workflowstate) ||$row->workflowstate == ASSIGN_MARKING_WORKFLOW_STATE_INMARKING ||$row->workflowstate == ASSIGN_MARKING_WORKFLOW_STATE_NOTMARKED)) {$name = 'quickgrade_' . $row->id . '_allocatedmarker';return html_writer::select($markerlist, $name, $row->allocatedmarker, false);} else if (!empty($row->allocatedmarker)) {$output = '';if ($this->quickgrading) { // Add hidden field for quickgrading page.$name = 'quickgrade_' . $row->id . '_allocatedmarker';$attributes = ['type' => 'hidden', 'name' => $name, 'value' => $row->allocatedmarker];$output .= html_writer::empty_tag('input', $attributes);}$output .= $markerlist[$row->allocatedmarker];return $output;}}/*** For download only - list all the valid options for this custom scale.** @param stdClass $row - The row of data* @return string A list of valid options for the current scale*/public function col_scale($row) {global $DB;if (empty($this->scale)) {$dbparams = array('id' => -($this->assignment->get_instance()->grade));$this->scale = $DB->get_record('scale', $dbparams);}if (!empty($this->scale->scale)) {return implode("\n", explode(',', $this->scale->scale));}return '';}/*** Display a grade with scales etc.** @param string $grade* @param boolean $editable* @param int $userid The user id of the user this grade belongs to* @param int $modified Timestamp showing when the grade was last modified* @return string The formatted grade*/public function display_grade($grade, $editable, $userid, $modified) {if ($this->is_downloading()) {if ($this->assignment->get_instance()->grade >= 0) {if ($grade == -1 || $grade === null) {return '';}$gradeitem = $this->assignment->get_grade_item();return format_float($grade, $gradeitem->get_decimals());} else {// This is a custom scale.$scale = $this->assignment->display_grade($grade, false);if ($scale == '-') {$scale = '';}return $scale;}}return $this->assignment->display_grade($grade, $editable, $userid, $modified);}/*** Get the team info for this user.** @param stdClass $row* @return string The team name*/public function col_team(stdClass $row) {$submission = false;$group = false;$this->get_group_and_submission($row->id, $group, $submission, -1);if ($group) {return format_string($group->name, true, ['context' => $this->assignment->get_context()]);} else if ($this->assignment->get_instance()->preventsubmissionnotingroup) {$usergroups = $this->assignment->get_all_groups($row->id);if (count($usergroups) > 1) {return get_string('multipleteamsgrader', 'assign');} else {return get_string('noteamgrader', 'assign');}}return get_string('defaultteam', 'assign');}/*** Use a static cache to try and reduce DB calls.** @param int $userid The user id for this submission* @param int $group The groupid (returned)* @param stdClass|false $submission The stdClass submission or false (returned)* @param int $attemptnumber Return a specific attempt number (-1 for latest)*/protected function get_group_and_submission($userid, &$group, &$submission, $attemptnumber) {$group = false;if (isset($this->submissiongroups[$userid])) {$group = $this->submissiongroups[$userid];} else {$group = $this->assignment->get_submission_group($userid, false);$this->submissiongroups[$userid] = $group;}$groupid = 0;if ($group) {$groupid = $group->id;}// Static cache is keyed by groupid and attemptnumber.// We may need both the latest and previous attempt in the same page.if (isset($this->groupsubmissions[$groupid . ':' . $attemptnumber])) {$submission = $this->groupsubmissions[$groupid . ':' . $attemptnumber];} else {$submission = $this->assignment->get_group_submission($userid, $groupid, false, $attemptnumber);$this->groupsubmissions[$groupid . ':' . $attemptnumber] = $submission;}}/*** Format a list of outcomes.** @param stdClass $row* @return string*/public function col_outcomes(stdClass $row) {$outcomes = '';foreach ($this->gradinginfo->outcomes as $index => $outcome) {$options = make_grades_menu(-$outcome->scaleid);$options[0] = get_string('nooutcome', 'grades');if ($this->quickgrading && !($outcome->grades[$row->userid]->locked)) {$select = '<select name="outcome_' . $index . '_' . $row->userid . '" class="quickgrade">';foreach ($options as $optionindex => $optionvalue) {$selected = '';if ($outcome->grades[$row->userid]->grade == $optionindex) {$selected = 'selected="selected"';}$select .= '<option value="' . $optionindex . '"' . $selected . '>' . $optionvalue . '</option>';}$select .= '</select>';$outcomes .= $this->output->container($outcome->name . ': ' . $select, 'outcome');} else {$name = $outcome->name . ': ' . $options[$outcome->grades[$row->userid]->grade];if ($this->is_downloading()) {$outcomes .= $name;} else {$outcomes .= $this->output->container($name, 'outcome');}}}return $outcomes;}/*** Format a user picture for display.** @param stdClass $row* @return string*/public function col_picture(stdClass $row) {return $this->output->user_picture($row);}/*** Format a user record for display (link to profile).** @param stdClass $row* @return string*/public function col_fullname($row) {if (!$this->is_downloading()) {$courseid = $this->assignment->get_course()->id;$link = new moodle_url('/user/view.php', array('id' => $row->id, 'course' => $courseid));$fullname = $this->output->action_link($link, $this->assignment->fullname($row));} else {$fullname = $this->assignment->fullname($row);}if (!$this->assignment->is_active_user($row->id)) {$suspendedstring = get_string('userenrolmentsuspended', 'grades');$fullname .= ' ' . $this->output->pix_icon('i/enrolmentsuspended', $suspendedstring);$fullname = html_writer::tag('span', $fullname, array('class' => 'usersuspended'));}return $fullname;}/*** Insert a checkbox for selecting the current row for batch operations.** @param stdClass $row* @return string*/public function col_select(stdClass $row) {$selectcol = '<label class="accesshide" for="selectuser_' . $row->userid . '">';$selectcol .= get_string('selectuser', 'assign', $this->assignment->fullname($row));$selectcol .= '</label>';$selectcol .= '<input type="checkbox"id="selectuser_' . $row->userid . '"name="selectedusers"value="' . $row->userid . '"/>';$selectcol .= '<input type="hidden"name="grademodified_' . $row->userid . '"value="' . $row->timemarked . '"/>';$selectcol .= '<input type="hidden"name="gradeattempt_' . $row->userid . '"value="' . $row->attemptnumber . '"/>';return $selectcol;}/*** Return a users grades from the listing of all grade data for this assignment.** @param int $userid* @return mixed stdClass or false*/private function get_gradebook_data_for_user($userid) {if (isset($this->gradinginfo->items[0]) && $this->gradinginfo->items[0]->grades[$userid]) {return $this->gradinginfo->items[0]->grades[$userid];}return false;}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_gradecanbechanged(stdClass $row) {$gradingdisabled = $this->assignment->grading_disabled($row->id, true, $this->gradinginfo);if ($gradingdisabled) {return get_string('no');} else {return get_string('yes');}}/*** Format a column of data for display** @param stdClass $row* @return string*/public function col_grademax(stdClass $row) {if ($this->assignment->get_instance()->grade > 0) {$gradeitem = $this->assignment->get_grade_item();return format_float($this->assignment->get_instance()->grade, $gradeitem->get_decimals());} else {return '';}}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_grade(stdClass $row) {$o = '';$link = '';$separator = $this->output->spacer(array(), true);$grade = '';$gradingdisabled = $this->assignment->grading_disabled($row->id, true, $this->gradinginfo);if (!$this->is_downloading() && $this->hasgrade) {$urlparams = array('id' => $this->assignment->get_course_module()->id,'rownum' => 0,'action' => 'grader');if ($this->assignment->is_blind_marking()) {if (empty($row->recordid)) {$row->recordid = $this->assignment->get_uniqueid_for_user($row->userid);}$urlparams['blindid'] = $row->recordid;} else {$urlparams['userid'] = $row->userid;}$url = new moodle_url('/mod/assign/view.php', $urlparams);$link = '<a href="' . $url . '" class="btn btn-primary">' . get_string('gradeverb') . '</a>';$grade .= $link . $separator;}$grade .= $this->display_grade($row->grade,$this->quickgrading && !$gradingdisabled,$row->userid,$row->timemarked);return $grade;}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_finalgrade(stdClass $row) {$o = '';$grade = $this->get_gradebook_data_for_user($row->userid);if ($grade) {$o = $this->display_grade($grade->grade, false, $row->userid, $row->timemarked);}return $o;}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_timemarked(stdClass $row) {$o = '-';if ($row->timemarked && $row->grade !== null && $row->grade >= 0) {$o = userdate($row->timemarked);}if ($row->timemarked && $this->is_downloading()) {// Force it for downloads as it affects import.$o = userdate($row->timemarked);}return $o;}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_timesubmitted(stdClass $row) {$o = '-';$group = false;$submission = false;$this->get_group_and_submission($row->id, $group, $submission, -1);if ($submission && $submission->timemodified && $submission->status != ASSIGN_SUBMISSION_STATUS_NEW) {$o = userdate($submission->timemodified);} else if ($row->timesubmitted && $row->status != ASSIGN_SUBMISSION_STATUS_NEW) {$o = userdate($row->timesubmitted);}return $o;}/*** Format a column of data for display** @param stdClass $row* @return string*/public function col_status(stdClass $row) {$o = '';$instance = $this->assignment->get_instance($row->userid);$timelimitenabled = get_config('assign', 'enabletimelimit');$due = $instance->duedate;if ($row->extensionduedate) {$due = $row->extensionduedate;} else if (!empty($row->duedate)) {// The override due date.$due = $row->duedate;}$group = false;$submission = false;if ($instance->teamsubmission) {$this->get_group_and_submission($row->id, $group, $submission, -1);}if ($instance->teamsubmission && !$group && !$instance->preventsubmissionnotingroup) {$group = true;}if ($group && $submission) {$timesubmitted = $submission->timemodified;$status = $submission->status;} else {$timesubmitted = $row->timesubmitted;$status = $row->status;}$displaystatus = $status;if ($displaystatus == 'new') {$displaystatus = '';}if ($this->assignment->is_any_submission_plugin_enabled()) {$o .= $this->output->container(get_string('submissionstatus_' . $displaystatus, 'assign'),array('class' => 'submissionstatus' .$displaystatus));if ($due && $timesubmitted > $due && $status != ASSIGN_SUBMISSION_STATUS_NEW) {$usertime = format_time($timesubmitted - $due);$latemessage = get_string('submittedlateshort','assign',$usertime);$o .= $this->output->container($latemessage, 'latesubmission');} else if ($timelimitenabled && $instance->timelimit && !empty($submission->timestarted)&& ($timesubmitted - $submission->timestarted > $instance->timelimit)&& $status != ASSIGN_SUBMISSION_STATUS_NEW) {$usertime = format_time($timesubmitted - $submission->timestarted - $instance->timelimit);$latemessage = get_string('submittedlateshort','assign',$usertime);$o .= $this->output->container($latemessage, 'latesubmission');}if ($row->locked) {$lockedstr = get_string('submissionslockedshort', 'assign');$o .= $this->output->container($lockedstr, 'lockedsubmission');}// Add status of "grading" if markflow is not enabled.if (!$instance->markingworkflow) {if ($row->grade !== null && $row->grade >= 0) {if ($row->timemarked < $row->timesubmitted) {$o .= $this->output->container(get_string('gradedfollowupsubmit', 'assign'), 'gradingreminder');} else {$o .= $this->output->container(get_string('graded', 'assign'), 'submissiongraded');}} else if (!$timesubmitted || $status == ASSIGN_SUBMISSION_STATUS_NEW) {$now = time();if ($due && ($now > $due)) {$overduestr = get_string('overdue', 'assign', format_time($now - $due));$o .= $this->output->container($overduestr, 'overduesubmission');}}}}if ($instance->markingworkflow) {$o .= $this->col_workflowstatus($row);}if ($row->extensionduedate) {$userdate = userdate($row->extensionduedate);$extensionstr = get_string('userextensiondate', 'assign', $userdate);$o .= $this->output->container($extensionstr, 'extensiondate');}if ($this->is_downloading()) {$o = strip_tags(rtrim(str_replace('</div>', ' - ', $o), '- '));}return $o;}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_allowsubmissionsfromdate(stdClass $row) {$o = '';if ($row->allowsubmissionsfromdate) {$userdate = userdate($row->allowsubmissionsfromdate);$o = ($this->is_downloading()) ? $userdate : $this->output->container($userdate, 'allowsubmissionsfromdate');}return $o;}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_duedate(stdClass $row) {$o = '';if ($row->duedate) {$userdate = userdate($row->duedate);$o = ($this->is_downloading()) ? $userdate : $this->output->container($userdate, 'duedate');}return $o;}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_cutoffdate(stdClass $row) {$o = '';if ($row->cutoffdate) {$userdate = userdate($row->cutoffdate);$o = ($this->is_downloading()) ? $userdate : $this->output->container($userdate, 'cutoffdate');}return $o;}/*** Format a column of data for display.** @param stdClass $row* @return string*/public function col_userid(stdClass $row) {global $USER;$edit = '';$actions = array();$urlparams = array('id' => $this->assignment->get_course_module()->id,'rownum' => 0,'action' => 'grader');if ($this->assignment->is_blind_marking()) {if (empty($row->recordid)) {$row->recordid = $this->assignment->get_uniqueid_for_user($row->userid);}$urlparams['blindid'] = $row->recordid;} else {$urlparams['userid'] = $row->userid;}$url = new moodle_url('/mod/assign/view.php', $urlparams);$noimage = null;if (!$row->grade) {$description = get_string('gradeverb');} else {$description = get_string('updategrade', 'assign');}$actions['grade'] = new action_menu_link_secondary($url,$noimage,$description);// Everything we need is in the row.$submission = $row;$flags = $row;if ($this->assignment->get_instance()->teamsubmission) {// Use the cache for this.$submission = false;$group = false;$this->get_group_and_submission($row->id, $group, $submission, -1);}$submissionsopen = $this->assignment->submissions_open($row->id,true,$submission,$flags,$this->gradinginfo);$caneditsubmission = $this->assignment->can_edit_submission($row->id, $USER->id);// Hide for offline assignments.if ($this->assignment->is_any_submission_plugin_enabled()) {if (!$row->status ||$row->status == ASSIGN_SUBMISSION_STATUS_DRAFT ||!$this->assignment->get_instance()->submissiondrafts) {if (!$row->locked) {$urlparams = array('id' => $this->assignment->get_course_module()->id,'userid' => $row->id,'action' => 'lock','sesskey' => sesskey(),'page' => $this->currpage);$url = new moodle_url('/mod/assign/view.php', $urlparams);$description = get_string('preventsubmissionsshort', 'assign');$actions['lock'] = new action_menu_link_secondary($url,$noimage,$description);} else {$urlparams = array('id' => $this->assignment->get_course_module()->id,'userid' => $row->id,'action' => 'unlock','sesskey' => sesskey(),'page' => $this->currpage);$url = new moodle_url('/mod/assign/view.php', $urlparams);$description = get_string('allowsubmissionsshort', 'assign');$actions['unlock'] = new action_menu_link_secondary($url,$noimage,$description);}}if ($submissionsopen &&$USER->id != $row->id &&$caneditsubmission) {$urlparams = array('id' => $this->assignment->get_course_module()->id,'userid' => $row->id,'action' => 'editsubmission','sesskey' => sesskey(),'page' => $this->currpage);$url = new moodle_url('/mod/assign/view.php', $urlparams);$description = get_string('editsubmission', 'assign');$actions['editsubmission'] = new action_menu_link_secondary($url,$noimage,$description);}if ($USER->id != $row->id &&$caneditsubmission &&!empty($row->status)) {$urlparams = array('id' => $this->assignment->get_course_module()->id,'userid' => $row->id,'action' => 'removesubmissionconfirm','sesskey' => sesskey(),'page' => $this->currpage);$url = new moodle_url('/mod/assign/view.php', $urlparams);$description = get_string('removesubmission', 'assign');$actions['removesubmission'] = new action_menu_link_secondary($url,$noimage,$description);}}if (($this->assignment->get_instance()->duedate ||$this->assignment->get_instance()->cutoffdate) &&$this->hasgrantextension) {$urlparams = array('id' => $this->assignment->get_course_module()->id,'userid' => $row->id,'action' => 'grantextension','sesskey' => sesskey(),'page' => $this->currpage);$url = new moodle_url('/mod/assign/view.php', $urlparams);$description = get_string('grantextension', 'assign');$actions['grantextension'] = new action_menu_link_secondary($url,$noimage,$description);}if ($row->status == ASSIGN_SUBMISSION_STATUS_SUBMITTED &&$this->assignment->get_instance()->submissiondrafts) {$urlparams = array('id' => $this->assignment->get_course_module()->id,'userid' => $row->id,'action' => 'reverttodraft','sesskey' => sesskey(),'page' => $this->currpage);$url = new moodle_url('/mod/assign/view.php', $urlparams);$description = get_string('reverttodraftshort', 'assign');$actions['reverttodraft'] = new action_menu_link_secondary($url,$noimage,$description);}if ($row->status == ASSIGN_SUBMISSION_STATUS_DRAFT &&$this->assignment->get_instance()->submissiondrafts &&$caneditsubmission &&$submissionsopen &&$row->id != $USER->id) {$urlparams = array('id' => $this->assignment->get_course_module()->id,'userid' => $row->id,'action' => 'submitotherforgrading','sesskey' => sesskey(),'page' => $this->currpage);$url = new moodle_url('/mod/assign/view.php', $urlparams);$description = get_string('submitforgrading', 'assign');$actions['submitforgrading'] = new action_menu_link_secondary($url,$noimage,$description);}$ismanual = $this->assignment->get_instance()->attemptreopenmethod == ASSIGN_ATTEMPT_REOPEN_METHOD_MANUAL;$hassubmission = !empty($row->status);$notreopened = $hassubmission && $row->status != ASSIGN_SUBMISSION_STATUS_REOPENED;$isunlimited = $this->assignment->get_instance()->maxattempts == ASSIGN_UNLIMITED_ATTEMPTS;$hasattempts = $isunlimited || $row->attemptnumber < $this->assignment->get_instance()->maxattempts - 1;if ($ismanual && $hassubmission && $notreopened && $hasattempts) {$urlparams = array('id' => $this->assignment->get_course_module()->id,'userid' => $row->id,'action' => 'addattempt','sesskey' => sesskey(),'page' => $this->currpage);$url = new moodle_url('/mod/assign/view.php', $urlparams);$description = get_string('addattempt', 'assign');$actions['addattempt'] = new action_menu_link_secondary($url,$noimage,$description);}$menu = new action_menu();$menu->set_owner_selector('.gradingtable-actionmenu');$menu->set_boundary('window');$menu->set_menu_trigger(get_string('edit'));foreach ($actions as $action) {$menu->add($action);}// Prioritise the menu ahead of all other actions.$menu->prioritise = true;$edit .= $this->output->render($menu);return $edit;}/*** Write the plugin summary with an optional link to view the full feedback/submission.** @param assign_plugin $plugin Submission plugin or feedback plugin* @param stdClass $item Submission or grade* @param string $returnaction The return action to pass to the* view_submission page (the current page)* @param string $returnparams The return params to pass to the view_submission* page (the current page)* @return string The summary with an optional link*/private function format_plugin_summary_with_link(assign_plugin $plugin,stdClass $item,$returnaction,$returnparams) {$link = '';$showviewlink = false;$summary = $plugin->view_summary($item, $showviewlink);$separator = '';if ($showviewlink) {$viewstr = get_string('view' . substr($plugin->get_subtype(), strlen('assign')), 'assign');$icon = $this->output->pix_icon('t/preview', $viewstr);$urlparams = array('id' => $this->assignment->get_course_module()->id,'sid' => $item->id,'gid' => $item->id,'plugin' => $plugin->get_type(),'action' => 'viewplugin' . $plugin->get_subtype(),'returnaction' => $returnaction,'returnparams' => http_build_query($returnparams));$url = new moodle_url('/mod/assign/view.php', $urlparams);$link = $this->output->action_link($url, $icon);$separator = $this->output->spacer(array(), true);}return $link . $separator . $summary;}/*** Format the submission and feedback columns.** @param string $colname The column name* @param stdClass $row The submission row* @return mixed string or NULL*/public function other_cols($colname, $row) {// For extra user fields the result is already in $row.if (empty($this->plugincache[$colname])) {return parent::other_cols($colname, $row);}// This must be a plugin field.$plugincache = $this->plugincache[$colname];$plugin = $plugincache[0];$field = null;if (isset($plugincache[1])) {$field = $plugincache[1];}if ($plugin->is_visible() && $plugin->is_enabled()) {if ($plugin->get_subtype() == 'assignsubmission') {if ($this->assignment->get_instance()->teamsubmission) {$group = false;$submission = false;$this->get_group_and_submission($row->id, $group, $submission, -1);if ($submission) {if ($submission->status == ASSIGN_SUBMISSION_STATUS_REOPENED) {// For a newly reopened submission - we want to show the previous submission in the table.$this->get_group_and_submission($row->id, $group, $submission, $submission->attemptnumber-1);}if (isset($field)) {return $plugin->get_editor_text($field, $submission->id);}return $this->format_plugin_summary_with_link($plugin,$submission,'grading',array());}} else if ($row->submissionid) {if ($row->status == ASSIGN_SUBMISSION_STATUS_REOPENED) {// For a newly reopened submission - we want to show the previous submission in the table.$submission = $this->assignment->get_user_submission($row->userid, false, $row->attemptnumber - 1);} else {$submission = new stdClass();$submission->id = $row->submissionid;$submission->timecreated = $row->firstsubmission;$submission->timemodified = $row->timesubmitted;$submission->assignment = $this->assignment->get_instance()->id;$submission->userid = $row->userid;$submission->attemptnumber = $row->attemptnumber;}// Field is used for only for import/export and refers the the fieldname for the text editor.if (isset($field)) {return $plugin->get_editor_text($field, $submission->id);}return $this->format_plugin_summary_with_link($plugin,$submission,'grading',array());}} else {$grade = null;if (isset($field)) {return $plugin->get_editor_text($field, $row->gradeid);}if ($row->gradeid) {$grade = new stdClass();$grade->id = $row->gradeid;$grade->timecreated = $row->firstmarked;$grade->timemodified = $row->timemarked;$grade->assignment = $this->assignment->get_instance()->id;$grade->userid = $row->userid;$grade->grade = $row->grade;$grade->mailed = $row->mailed;$grade->attemptnumber = $row->attemptnumber;}if ($this->quickgrading && $plugin->supports_quickgrading()) {return $plugin->get_quickgrading_html($row->userid, $grade);} else if ($grade) {return $this->format_plugin_summary_with_link($plugin,$grade,'grading',array());}}}return '';}/*** Using the current filtering and sorting - load all rows and return a single column from them.** @param string $columnname The name of the raw column data* @return array of data*/public function get_column_data($columnname) {$this->setup();$this->currpage = 0;$this->query_db($this->tablemaxrows);$result = array();foreach ($this->rawdata as $row) {$result[] = $row->$columnname;}return $result;}/*** Return things to the renderer.** @return string the assignment name*/public function get_assignment_name() {return $this->assignment->get_instance()->name;}/*** Return things to the renderer.** @return int the course module id*/public function get_course_module_id() {return $this->assignment->get_course_module()->id;}/*** Return things to the renderer.** @return int the course id*/public function get_course_id() {return $this->assignment->get_course()->id;}/*** Return things to the renderer.** @return stdClass The course context*/public function get_course_context() {return $this->assignment->get_course_context();}/*** Return things to the renderer.** @return bool Does this assignment accept submissions*/public function submissions_enabled() {return $this->assignment->is_any_submission_plugin_enabled();}/*** Return things to the renderer.** @return bool Can this user view all grades (the gradebook)*/public function can_view_all_grades() {$context = $this->assignment->get_course_context();return has_capability('gradereport/grader:view', $context) &&has_capability('moodle/grade:viewall', $context);}/*** Always return a valid sort - even if the userid column is missing.* @return array column name => SORT_... constant.*/public function get_sort_columns() {$result = parent::get_sort_columns();$assignment = $this->assignment->get_instance();if (empty($assignment->blindmarking)) {$result = array_merge($result, array('userid' => SORT_ASC));} else {$result = array_merge($result, ['COALESCE(s.timecreated, ' . time() . ')' => SORT_ASC,'COALESCE(s.id, ' . PHP_INT_MAX . ')' => SORT_ASC,'um.id' => SORT_ASC,]);}return $result;}/*** Override the table show_hide_link to not show for select column.** @param string $column the column name, index into various names.* @param int $index numerical index of the column.* @return string HTML fragment.*/protected function show_hide_link($column, $index) {if ($index > 0 || !$this->hasgrade) {return parent::show_hide_link($column, $index);}return '';}/*** Overides setup to ensure it will only run a single time.*/public function setup() {// Check if the setup function has been called before, we should not run it twice.// If we do the sortorder of the table will be broken.if (!empty($this->setup)) {return;}parent::setup();}}