PHP graded_users_iterator::require_active_enrolment方法代码示例

 public function print_grades()
 {
     global $CFG;
     $export_tracking = $this->track_exports();
     $strgrades = get_string('grades');
     $profilefields = grade_helper::get_user_profile_fields($this->course->id, $this->usercustomfields);
     $shortname = format_string($this->course->shortname, true, array('context' => context_course::instance($this->course->id)));
     $downloadfilename = clean_filename("{$shortname} {$strgrades}");
     $csvexport = new csv_export_writer($this->separator);
     $csvexport->set_filename($downloadfilename);
     // Print names of all the fields
     $exporttitle = array();
     foreach ($profilefields as $field) {
         $exporttitle[] = $field->fullname;
     }
     if (!$this->onlyactive) {
         $exporttitle[] = get_string("suspended");
     }
     // Add a feedback column.
     foreach ($this->columns as $grade_item) {
         $exporttitle[] = $this->format_column_name($grade_item);
         if ($this->export_feedback) {
             $exporttitle[] = $this->format_column_name($grade_item, true);
         }
     }
     $csvexport->add_data($exporttitle);
     // Print all the lines of data.
     $geub = new grade_export_update_buffer();
     $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
     $gui->require_active_enrolment($this->onlyactive);
     $gui->allow_user_custom_fields($this->usercustomfields);
     $gui->init();
     while ($userdata = $gui->next_user()) {
         $exportdata = array();
         $user = $userdata->user;
         foreach ($profilefields as $field) {
             $fieldvalue = grade_helper::get_user_field_value($user, $field);
             $exportdata[] = $fieldvalue;
         }
         if (!$this->onlyactive) {
             $issuspended = $user->suspendedenrolment ? get_string('yes') : '';
             $exportdata[] = $issuspended;
         }
         foreach ($userdata->grades as $itemid => $grade) {
             if ($export_tracking) {
                 $status = $geub->track($grade);
             }
             $exportdata[] = $this->format_grade($grade);
             if ($this->export_feedback) {
                 $exportdata[] = $this->format_feedback($userdata->feedbacks[$itemid]);
             }
         }
         $csvexport->add_data($exportdata);
     }
     $gui->close();
     $geub->close();
     $csvexport->download_file();
     exit;
 }

 /**
  * To be implemented by child classes
  */
 public function print_grades()
 {
     global $CFG;
     require_once $CFG->dirroot . '/lib/excellib.class.php';
     $export_tracking = $this->track_exports();
     $strgrades = get_string('grades');
     // Calculate file name
     $shortname = format_string($this->course->shortname, true, array('context' => context_course::instance($this->course->id)));
     $downloadfilename = clean_filename("{$shortname} {$strgrades}.xls");
     // Creating a workbook
     $workbook = new MoodleExcelWorkbook("-");
     // Sending HTTP headers
     $workbook->send($downloadfilename);
     // Adding the worksheet
     $myxls = $workbook->add_worksheet($strgrades);
     // Print names of all the fields
     $profilefields = grade_helper::get_user_profile_fields($this->course->id, $this->usercustomfields);
     foreach ($profilefields as $id => $field) {
         $myxls->write_string(0, $id, $field->fullname);
     }
     $pos = count($profilefields);
     if (!$this->onlyactive) {
         $myxls->write_string(0, $pos++, get_string("suspended"));
     }
     foreach ($this->columns as $grade_item) {
         $myxls->write_string(0, $pos++, $this->format_column_name($grade_item));
         // Add a column_feedback column
         if ($this->export_feedback) {
             $myxls->write_string(0, $pos++, $this->format_column_name($grade_item, true));
         }
     }
     // Print all the lines of data.
     $i = 0;
     $geub = new grade_export_update_buffer();
     $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
     $gui->require_active_enrolment($this->onlyactive);
     $gui->allow_user_custom_fields($this->usercustomfields);
     $gui->init();
     while ($userdata = $gui->next_user()) {
         $i++;
         $user = $userdata->user;
         foreach ($profilefields as $id => $field) {
             $fieldvalue = grade_helper::get_user_field_value($user, $field);
             $myxls->write_string($i, $id, $fieldvalue);
         }
         $j = count($profilefields);
         if (!$this->onlyactive) {
             $issuspended = $user->suspendedenrolment ? get_string('yes') : '';
             $myxls->write_string($i, $j++, $issuspended);
         }
         foreach ($userdata->grades as $itemid => $grade) {
             if ($export_tracking) {
                 $status = $geub->track($grade);
             }
             $gradestr = $this->format_grade($grade);
             if (is_numeric($gradestr)) {
                 $myxls->write_number($i, $j++, $gradestr);
             } else {
                 $myxls->write_string($i, $j++, $gradestr);
             }
             // writing feedback if requested
             if ($this->export_feedback) {
                 $myxls->write_string($i, $j++, $this->format_feedback($userdata->feedbacks[$itemid]));
             }
         }
     }
     $gui->close();
     $geub->close();
     /// Close the workbook
     $workbook->close();
     exit;
 }

function grade_get_graded_users_select($report, $course, $userid, $groupid, $includeall)
{
    global $USER, $CFG;
    if (is_null($userid)) {
        $userid = $USER->id;
    }
    $coursecontext = context_course::instance($course->id);
    $defaultgradeshowactiveenrol = !empty($CFG->grade_report_showonlyactiveenrol);
    $showonlyactiveenrol = get_user_preferences('grade_report_showonlyactiveenrol', $defaultgradeshowactiveenrol);
    $showonlyactiveenrol = $showonlyactiveenrol || !has_capability('moodle/course:viewsuspendedusers', $coursecontext);
    $menu = array();
    // Will be a list of userid => user name
    $menususpendedusers = array();
    // Suspended users go to a separate optgroup.
    $gui = new graded_users_iterator($course, null, $groupid);
    $gui->require_active_enrolment($showonlyactiveenrol);
    $gui->init();
    $label = get_string('selectauser', 'grades');
    if ($includeall) {
        $menu[0] = get_string('allusers', 'grades');
        $label = get_string('selectalloroneuser', 'grades');
    }
    while ($userdata = $gui->next_user()) {
        $user = $userdata->user;
        $userfullname = fullname($user);
        if ($user->suspendedenrolment) {
            $menususpendedusers[$user->id] = $userfullname;
        } else {
            $menu[$user->id] = $userfullname;
        }
    }
    $gui->close();
    if ($includeall) {
        $menu[0] .= " (" . (count($menu) + count($menususpendedusers) - 1) . ")";
    }
    if (!empty($menususpendedusers)) {
        $menu[] = array(get_string('suspendedusers') => $menususpendedusers);
    }
    $select = new single_select(new moodle_url('/grade/report/' . $report . '/index.php', array('id' => $course->id)), 'userid', $menu, $userid);
    $select->label = $label;
    $select->formid = 'choosegradeuser';
    return $select;
}

     $currentgroup = NULL;
 }
 $isseparategroups = ($course->groupmode == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context));
 if ($isseparategroups and !$currentgroup) {
     // no separate group access, can view only self
     $userid = $USER->id;
     $user_selector = false;
 } else {
     $user_selector = true;
 }
 $defaultgradeshowactiveenrol = !empty($CFG->grade_report_showonlyactiveenrol);
 $showonlyactiveenrol = get_user_preferences('grade_report_showonlyactiveenrol', $defaultgradeshowactiveenrol);
 $showonlyactiveenrol = $showonlyactiveenrol || !has_capability('moodle/course:viewsuspendedusers', $context);
 if (empty($userid)) {
     $gui = new graded_users_iterator($course, null, $currentgroup);
     $gui->require_active_enrolment($showonlyactiveenrol);
     $gui->init();
     // Add tabs
     print_grade_page_head($courseid, 'report', 'user');
     groups_print_course_menu($course, $gpr->get_return_url('index.php?id=' . $courseid, array('userid' => 0)));
     if ($user_selector) {
         $renderer = $PAGE->get_renderer('gradereport_user');
         echo $renderer->graded_users_selector('user', $course, $userid, $currentgroup, true);
     }
     while ($userdata = $gui->next_user()) {
         $user = $userdata->user;
         $report = new grade_report_user($courseid, $gpr, $context, $user->id);
         $studentnamelink = html_writer::link(new moodle_url('/user/view.php', array('id' => $report->user->id, 'course' => $courseid)), fullname($report->user));
         echo $OUTPUT->heading(get_string('pluginname', 'gradereport_user') . ' - ' . $studentnamelink);
         if ($report->fill_table()) {
             echo '<br />' . $report->print_table(true);

 public function print_grades()
 {
     global $CFG;
     $export_tracking = $this->track_exports();
     $strgrades = get_string('grades');
     switch ($this->separator) {
         case 'comma':
             $separator = ",";
             break;
         case 'tab':
         default:
             $separator = "\t";
     }
     /// Print header to force download
     if (strpos($CFG->wwwroot, 'https://') === 0) {
         //https sites - watch out for IE! KB812935 and KB316431
         @header('Cache-Control: max-age=10');
         @header('Expires: ' . gmdate('D, d M Y H:i:s', 0) . ' GMT');
         @header('Pragma: ');
     } else {
         //normal http - prevent caching at all cost
         @header('Cache-Control: private, must-revalidate, pre-check=0, post-check=0, max-age=0');
         @header('Expires: ' . gmdate('D, d M Y H:i:s', 0) . ' GMT');
         @header('Pragma: no-cache');
     }
     header("Content-Type: application/download\n");
     $shortname = format_string($this->course->shortname, true, array('context' => get_context_instance(CONTEXT_COURSE, $this->course->id)));
     $downloadfilename = clean_filename("{$shortname} {$strgrades}");
     header("Content-Disposition: attachment; filename=\"{$downloadfilename}.txt\"");
     /// Print names of all the fields
     echo get_string("firstname") . $separator . get_string("lastname") . $separator . get_string("idnumber") . $separator . get_string("institution") . $separator . get_string("department") . $separator . get_string("email");
     foreach ($this->columns as $grade_item) {
         echo $separator . $this->format_column_name($grade_item);
         /// add a feedback column
         if ($this->export_feedback) {
             echo $separator . $this->format_column_name($grade_item, true);
         }
     }
     echo "\n";
     /// Print all the lines of data.
     $geub = new grade_export_update_buffer();
     $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
     $gui->require_active_enrolment($this->onlyactive);
     $gui->init();
     while ($userdata = $gui->next_user()) {
         $user = $userdata->user;
         echo $user->firstname . $separator . $user->lastname . $separator . $user->idnumber . $separator . $user->institution . $separator . $user->department . $separator . $user->email;
         foreach ($userdata->grades as $itemid => $grade) {
             if ($export_tracking) {
                 $status = $geub->track($grade);
             }
             echo $separator . $this->format_grade($grade);
             if ($this->export_feedback) {
                 echo $separator . $this->format_feedback($userdata->feedbacks[$itemid]);
             }
         }
         echo "\n";
     }
     $gui->close();
     $geub->close();
     exit;
 }

 /**
  * Prints preview of exported grades on screen as a feedback mechanism
  * @param bool $require_user_idnumber true means skip users without idnumber
  * @deprecated since 2.8 MDL-46548. Previews are not useful on export.
  */
 public function display_preview($require_user_idnumber = false)
 {
     global $OUTPUT;
     debugging('function grade_export::display_preview is deprecated.', DEBUG_DEVELOPER);
     $userprofilefields = grade_helper::get_user_profile_fields($this->course->id, $this->usercustomfields);
     $formatoptions = new stdClass();
     $formatoptions->para = false;
     echo $OUTPUT->heading(get_string('previewrows', 'grades'));
     echo '<table>';
     echo '<tr>';
     foreach ($userprofilefields as $field) {
         echo '<th>' . $field->fullname . '</th>';
     }
     if (!$this->onlyactive) {
         echo '<th>' . get_string("suspended") . "</th>";
     }
     foreach ($this->columns as $grade_item) {
         echo '<th>' . $this->format_column_name($grade_item) . '</th>';
         /// add a column_feedback column
         if ($this->export_feedback) {
             echo '<th>' . $this->format_column_name($grade_item, true) . '</th>';
         }
     }
     echo '</tr>';
     /// Print all the lines of data.
     $i = 0;
     $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
     $gui->require_active_enrolment($this->onlyactive);
     $gui->allow_user_custom_fields($this->usercustomfields);
     $gui->init();
     while ($userdata = $gui->next_user()) {
         // number of preview rows
         if ($this->previewrows and $this->previewrows <= $i) {
             break;
         }
         $user = $userdata->user;
         if ($require_user_idnumber and empty($user->idnumber)) {
             // some exports require user idnumber so we can match up students when importing the data
             continue;
         }
         $gradeupdated = false;
         // if no grade is update at all for this user, do not display this row
         $rowstr = '';
         foreach ($this->columns as $itemid => $unused) {
             $gradetxt = $this->format_grade($userdata->grades[$itemid]);
             // get the status of this grade, and put it through track to get the status
             $g = new grade_export_update_buffer();
             $grade_grade = new grade_grade(array('itemid' => $itemid, 'userid' => $user->id));
             $status = $g->track($grade_grade);
             if ($this->updatedgradesonly && ($status == 'nochange' || $status == 'unknown')) {
                 $rowstr .= '<td>' . get_string('unchangedgrade', 'grades') . '</td>';
             } else {
                 $rowstr .= "<td>{$gradetxt}</td>";
                 $gradeupdated = true;
             }
             if ($this->export_feedback) {
                 $rowstr .= '<td>' . $this->format_feedback($userdata->feedbacks[$itemid]) . '</td>';
             }
         }
         // if we are requesting updated grades only, we are not interested in this user at all
         if (!$gradeupdated && $this->updatedgradesonly) {
             continue;
         }
         echo '<tr>';
         foreach ($userprofilefields as $field) {
             $fieldvalue = grade_helper::get_user_field_value($user, $field);
             // @see profile_field_base::display_data().
             echo '<td>' . format_text($fieldvalue, FORMAT_MOODLE, $formatoptions) . '</td>';
         }
         if (!$this->onlyactive) {
             $issuspended = $user->suspendedenrolment ? get_string('yes') : '';
             echo "<td>{$issuspended}</td>";
         }
         echo $rowstr;
         echo "</tr>";
         $i++;
         // increment the counter
     }
     echo '</table>';
     $gui->close();
 }

 /**
  * To be implemented by child classes
  */
 public function print_grades()
 {
     global $CFG;
     require_once $CFG->dirroot . '/lib/excellib.class.php';
     $export_tracking = $this->track_exports();
     $strgrades = get_string('grades');
     /// Calculate file name
     $shortname = format_string($this->course->shortname, true, array('context' => get_context_instance(CONTEXT_COURSE, $this->course->id)));
     $downloadfilename = clean_filename("{$shortname} {$strgrades}.xls");
     /// Creating a workbook
     $workbook = new MoodleExcelWorkbook("-");
     /// Sending HTTP headers
     $workbook->send($downloadfilename);
     /// Adding the worksheet
     $myxls =& $workbook->add_worksheet($strgrades);
     /// Print names of all the fields
     $myxls->write_string(0, 0, get_string("firstname"));
     $myxls->write_string(0, 1, get_string("lastname"));
     $myxls->write_string(0, 2, get_string("idnumber"));
     $myxls->write_string(0, 3, get_string("institution"));
     $myxls->write_string(0, 4, get_string("department"));
     $myxls->write_string(0, 5, get_string("email"));
     $pos = 6;
     foreach ($this->columns as $grade_item) {
         $myxls->write_string(0, $pos++, $this->format_column_name($grade_item));
         /// add a column_feedback column
         if ($this->export_feedback) {
             $myxls->write_string(0, $pos++, $this->format_column_name($grade_item, true));
         }
     }
     /// Print all the lines of data.
     $i = 0;
     $geub = new grade_export_update_buffer();
     $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
     $gui->require_active_enrolment($this->onlyactive);
     $gui->init();
     while ($userdata = $gui->next_user()) {
         $i++;
         $user = $userdata->user;
         $myxls->write_string($i, 0, $user->firstname);
         $myxls->write_string($i, 1, $user->lastname);
         $myxls->write_string($i, 2, $user->idnumber);
         $myxls->write_string($i, 3, $user->institution);
         $myxls->write_string($i, 4, $user->department);
         $myxls->write_string($i, 5, $user->email);
         $j = 6;
         foreach ($userdata->grades as $itemid => $grade) {
             if ($export_tracking) {
                 $status = $geub->track($grade);
             }
             $gradestr = $this->format_grade($grade);
             if (is_numeric($gradestr)) {
                 $myxls->write_number($i, $j++, $gradestr);
             } else {
                 $myxls->write_string($i, $j++, $gradestr);
             }
             // writing feedback if requested
             if ($this->export_feedback) {
                 $myxls->write_string($i, $j++, $this->format_feedback($userdata->feedbacks[$itemid]));
             }
         }
     }
     $gui->close();
     $geub->close();
     /// Close the workbook
     $workbook->close();
     exit;
 }

 /**
  * To be implemented by child classes
  * @param boolean $feedback
  * @param boolean $publish Whether to output directly, or send as a file
  * @return string
  */
 public function print_grades($feedback = false)
 {
     global $CFG;
     require_once $CFG->libdir . '/filelib.php';
     $export_tracking = $this->track_exports();
     $strgrades = get_string('grades');
     /// Calculate file name
     $shortname = format_string($this->course->shortname, true, array('context' => context_course::instance($this->course->id)));
     $downloadfilename = clean_filename("{$shortname} {$strgrades}.xml");
     make_temp_directory('gradeexport');
     $tempfilename = $CFG->tempdir . '/gradeexport/' . md5(sesskey() . microtime() . $downloadfilename);
     if (!($handle = fopen($tempfilename, 'w+b'))) {
         print_error('cannotcreatetempdir');
     }
     /// time stamp to ensure uniqueness of batch export
     fwrite($handle, '<results batch="xml_export_' . time() . '">' . "\n");
     $export_buffer = array();
     $geub = new grade_export_update_buffer();
     $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
     $gui->require_active_enrolment($this->onlyactive);
     $gui->init();
     while ($userdata = $gui->next_user()) {
         $user = $userdata->user;
         if (empty($user->idnumber)) {
             //id number must exist otherwise we cant match up students when importing
             continue;
         }
         // studentgrades[] index should match with corresponding $index
         foreach ($userdata->grades as $itemid => $grade) {
             $grade_item = $this->grade_items[$itemid];
             $grade->grade_item =& $grade_item;
             $gradestr = $this->format_grade($grade, $this->displaytype);
             // no formating for now
             // MDL-11669, skip exported grades or bad grades (if setting says so)
             if ($export_tracking) {
                 $status = $geub->track($grade);
                 if ($this->updatedgradesonly && ($status == 'nochange' || $status == 'unknown')) {
                     continue;
                 }
             }
             fwrite($handle, "\t<result>\n");
             if ($export_tracking) {
                 fwrite($handle, "\t\t<state>{$status}</state>\n");
             }
             // only need id number
             fwrite($handle, "\t\t<assignment>{$grade_item->idnumber}</assignment>\n");
             // this column should be customizable to use either student id, idnumber, uesrname or email.
             fwrite($handle, "\t\t<student>{$user->idnumber}</student>\n");
             fwrite($handle, "\t\t<score>{$gradestr}</score>\n");
             if ($this->export_feedback) {
                 $feedbackstr = $this->format_feedback($userdata->feedbacks[$itemid]);
                 fwrite($handle, "\t\t<feedback>{$feedbackstr}</feedback>\n");
             }
             fwrite($handle, "\t</result>\n");
         }
     }
     fwrite($handle, "</results>");
     fclose($handle);
     $gui->close();
     $geub->close();
     if (defined('BEHAT_SITE_RUNNING')) {
         // If behat is running, we cannot test the output if we force a file download.
         include $tempfilename;
     } else {
         @header("Content-type: text/xml; charset=UTF-8");
         send_temp_file($tempfilename, $downloadfilename, false);
     }
 }

 /**
  * Get the report data
  * @param  stdClass $course  course object
  * @param  stdClass $context context object
  * @param  stdClass $user    user object (it can be null for all the users)
  * @param  int $userid       the user to retrieve data from, 0 for all
  * @param  int $groupid      the group id to filter
  * @param  bool $tabledata   whether to get the table data (true) or the gradeitemdata
  * @return array data and possible warnings
  * @since  Moodle 3.2
  */
 protected static function get_report_data($course, $context, $user, $userid, $groupid, $tabledata = true)
 {
     global $CFG;
     $warnings = array();
     // Require files here to save some memory in case validation fails.
     require_once $CFG->dirroot . '/group/lib.php';
     require_once $CFG->libdir . '/gradelib.php';
     require_once $CFG->dirroot . '/grade/lib.php';
     require_once $CFG->dirroot . '/grade/report/user/lib.php';
     // Force regrade to update items marked as 'needupdate'.
     grade_regrade_final_grades($course->id);
     $gpr = new grade_plugin_return(array('type' => 'report', 'plugin' => 'user', 'courseid' => $course->id, 'userid' => $userid));
     $reportdata = array();
     // Just one user.
     if ($user) {
         $report = new grade_report_user($course->id, $gpr, $context, $userid);
         $report->fill_table();
         $gradeuserdata = array('courseid' => $course->id, 'userid' => $user->id, 'userfullname' => fullname($user), 'maxdepth' => $report->maxdepth);
         if ($tabledata) {
             $gradeuserdata['tabledata'] = $report->tabledata;
         } else {
             $gradeuserdata['gradeitems'] = $report->gradeitemsdata;
         }
         $reportdata[] = $gradeuserdata;
     } else {
         $defaultgradeshowactiveenrol = !empty($CFG->grade_report_showonlyactiveenrol);
         $showonlyactiveenrol = get_user_preferences('grade_report_showonlyactiveenrol', $defaultgradeshowactiveenrol);
         $showonlyactiveenrol = $showonlyactiveenrol || !has_capability('moodle/course:viewsuspendedusers', $context);
         $gui = new graded_users_iterator($course, null, $groupid);
         $gui->require_active_enrolment($showonlyactiveenrol);
         $gui->init();
         while ($userdata = $gui->next_user()) {
             $currentuser = $userdata->user;
             $report = new grade_report_user($course->id, $gpr, $context, $currentuser->id);
             $report->fill_table();
             $gradeuserdata = array('courseid' => $course->id, 'userid' => $currentuser->id, 'userfullname' => fullname($currentuser), 'maxdepth' => $report->maxdepth);
             if ($tabledata) {
                 $gradeuserdata['tabledata'] = $report->tabledata;
             } else {
                 $gradeuserdata['gradeitems'] = $report->gradeitemsdata;
             }
             $reportdata[] = $gradeuserdata;
         }
         $gui->close();
     }
     return array($reportdata, $warnings);
 }

 /**
  * Returns a list of grades tables for users in a course.
  *
  * @param int $courseid Course Id
  * @param int $userid   Only this user (optional)
  *
  * @return array the grades tables
  * @since Moodle 2.9
  */
 public static function get_grades_table($courseid, $userid = 0)
 {
     global $CFG, $USER;
     $warnings = array();
     // Validate the parameter.
     $params = self::validate_parameters(self::get_grades_table_parameters(), array('courseid' => $courseid, 'userid' => $userid));
     // Compact/extract functions are not recommended.
     $courseid = $params['courseid'];
     $userid = $params['userid'];
     // Function get_course internally throws an exception if the course doesn't exist.
     $course = get_course($courseid);
     $context = context_course::instance($courseid);
     self::validate_context($context);
     // Specific capabilities.
     require_capability('gradereport/user:view', $context);
     $user = null;
     if (empty($userid)) {
         require_capability('moodle/grade:viewall', $context);
     } else {
         $user = core_user::get_user($userid, '*', MUST_EXIST);
     }
     $access = false;
     if (has_capability('moodle/grade:viewall', $context)) {
         // Can view all course grades.
         $access = true;
     } else {
         if ($userid == $USER->id and has_capability('moodle/grade:view', $context) and $course->showgrades) {
             // View own grades.
             $access = true;
         }
     }
     if (!$access) {
         throw new moodle_exception('nopermissiontoviewgrades', 'error');
     }
     // Require files here to save some memory in case validation fails.
     require_once $CFG->dirroot . '/group/lib.php';
     require_once $CFG->libdir . '/gradelib.php';
     require_once $CFG->dirroot . '/grade/lib.php';
     require_once $CFG->dirroot . '/grade/report/user/lib.php';
     $gpr = new grade_plugin_return(array('type' => 'report', 'plugin' => 'user', 'courseid' => $courseid, 'userid' => $userid));
     $tables = array();
     // Just one user.
     if ($user) {
         $report = new grade_report_user($courseid, $gpr, $context, $userid);
         $report->fill_table();
         $tables[] = array('courseid' => $courseid, 'userid' => $user->id, 'userfullname' => fullname($user), 'maxdepth' => $report->maxdepth, 'tabledata' => $report->tabledata);
     } else {
         $defaultgradeshowactiveenrol = !empty($CFG->grade_report_showonlyactiveenrol);
         $showonlyactiveenrol = get_user_preferences('grade_report_showonlyactiveenrol', $defaultgradeshowactiveenrol);
         $showonlyactiveenrol = $showonlyactiveenrol || !has_capability('moodle/course:viewsuspendedusers', $context);
         $gui = new graded_users_iterator($course);
         $gui->require_active_enrolment($showonlyactiveenrol);
         $gui->init();
         while ($userdata = $gui->next_user()) {
             $currentuser = $userdata->user;
             $report = new grade_report_user($courseid, $gpr, $context, $currentuser->id);
             $report->fill_table();
             $tables[] = array('courseid' => $courseid, 'userid' => $currentuser->id, 'userfullname' => fullname($currentuser), 'maxdepth' => $report->maxdepth, 'tabledata' => $report->tabledata);
         }
         $gui->close();
     }
     $result = array();
     $result['tables'] = $tables;
     $result['warnings'] = $warnings;
     return $result;
 }

 /**
  * Load a valid list of users for this gradebook as the screen "items".
  * @return array $users A list of enroled users.
  */
 protected function load_users()
 {
     global $CFG;
     // Create a graded_users_iterator because it will properly check the groups etc.
     $defaultgradeshowactiveenrol = !empty($CFG->grade_report_showonlyactiveenrol);
     $showonlyactiveenrol = get_user_preferences('grade_report_showonlyactiveenrol', $defaultgradeshowactiveenrol);
     $showonlyactiveenrol = $showonlyactiveenrol || !has_capability('moodle/course:viewsuspendedusers', $this->context);
     require_once $CFG->dirroot . '/grade/lib.php';
     $gui = new \graded_users_iterator($this->course, null, $this->groupid);
     $gui->require_active_enrolment($showonlyactiveenrol);
     $gui->init();
     // Flatten the users.
     $users = array();
     while ($user = $gui->next_user()) {
         $users[$user->user->id] = $user->user;
     }
     return $users;
 }

 public function display_preview($require_user_idnumber = false)
 {
     global $OUTPUT;
     $userprofilefields = grade_helper::get_user_profile_fields($this->course->id, $this->usercustomfields);
     $formatoptions = new stdClass();
     $formatoptions->para = false;
     $exporttitle = array('Client Code', 'Client Name', 'Qualification Code', 'Unit Code', 'Unit Start Date', 'Unit End Date', 'Outcome Name', 'Outcome Code');
     echo $OUTPUT->heading(get_string('previewrows', 'grades'));
     echo '<table class="csv-table">';
     echo '<tr>';
     foreach ($exporttitle as $field) {
         echo '<th>' . $field . '</th>';
     }
     if (!$this->onlyactive) {
         echo '<th>' . get_string("suspended") . "</th>";
     }
     // foreach ($this->columns as $grade_item) {
     //     echo '<th>'.$this->format_column_name($grade_item).'</th>';
     //     /// add a column_feedback column
     //     if ($this->export_feedback) {
     //         echo '<th>'.$this->format_column_name($grade_item, true).'</th>';
     //     }
     // }
     echo '</tr>';
     /// Print all the lines of data.
     $i = 0;
     $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
     $gui->require_active_enrolment($this->onlyactive);
     $gui->allow_user_custom_fields($this->usercustomfields);
     $gui->init();
     while ($userdata = $gui->next_user()) {
         // number of preview rows
         if ($this->previewrows and $this->previewrows <= $i) {
             break;
         }
         $user = $userdata->user;
         if ($require_user_idnumber and empty($user->idnumber)) {
             // some exports require user idnumber so we can match up students when importing the data
             continue;
         }
         $gradeupdated = false;
         // if no grade is update at all for this user, do not display this row
         $rowstr = '';
         foreach ($this->columns as $itemid => $grade_item) {
             $gradetxt = $this->format_grade($userdata->grades[$itemid]);
             $activity_start_date = $this->get_activity_start_date($this->course, $user, $grade_item);
             $grade_modified = $userdata->grades[$itemid]->timemodified;
             $client_code = $userdata->user->idnumber;
             $client_name = $userdata->user->firstname . ' ' . $userdata->user->lastname;
             // $course_code = $this->get_course_short_name($grade_item);
             $course_code = $this->course->idnumber;
             // $unit_code = $grade_item->itemname;
             $unit_code = $grade_item->idnumber;
             $unit_start = $activity_start_date ? $activity_start_date->format('d-m-Y') : '-';
             $unit_end = $grade_modified ? userdate($grade_modified, '%d-%m-%Y') : '-';
             $grade_name = $this->get_grade_name($gradetxt);
             if ($grade_item->itemtype == 'category') {
                 $category_start_date = $this->get_category_start_date($this->course, $user, $grade_item);
                 $unit_start = $category_start_date ? $category_start_date->format('d-m-Y') : '-';
             }
             // get the status of this grade, and put it through track to get the status
             $g = new grade_export_update_buffer();
             $grade_grade = new grade_grade(array('itemid' => $itemid, 'userid' => $user->id));
             $status = $g->track($grade_grade);
             if ($this->updatedgradesonly && ($status == 'nochange' || $status == 'unknown')) {
                 $rowstr .= '<td>' . get_string('unchangedgrade', 'grades') . '</td>';
             } else {
                 $rowstr .= "<tr>\n                                    <td>{$client_code}</td>\n                                    <td>{$client_name}</td>\n                                    <td>{$course_code}</td>\n                                    <td>{$unit_code}</td>\n                                    <td>{$unit_start}</td>\n                                    <td>{$unit_end}</td>\n                                    <td>{$grade_name}</td>\n                                    <td>{$gradetxt}</td>\n                                </tr>";
                 $gradeupdated = true;
             }
             if ($this->export_feedback) {
                 $rowstr .= '<td>' . $this->format_feedback($userdata->feedbacks[$itemid]) . '</td>';
             }
         }
         // if we are requesting updated grades only, we are not interested in this user at all
         if (!$gradeupdated && $this->updatedgradesonly) {
             continue;
         }
         echo '<tr>';
         echo $rowstr;
         echo "</tr>";
         $i++;
         // increment the counter
     }
     echo '</table>';
     $gui->close();
 }

    /**
     * Prints preview of exported grades on screen as a feedback mechanism
     * @param bool $require_user_idnumber true means skip users without idnumber
     */
    public function display_preview($require_user_idnumber=false) {
        global $OUTPUT;
        echo $OUTPUT->heading(get_string('previewrows', 'grades'));

        echo '<table>';
        echo '<tr>';
        echo '<th>'.get_string("firstname")."</th>".
             '<th>'.get_string("lastname")."</th>".
             '<th>'.get_string("idnumber")."</th>".
             '<th>'.get_string("institution")."</th>".
             '<th>'.get_string("department")."</th>".
             '<th>'.get_string("email")."</th>";
        foreach ($this->columns as $grade_item) {
            echo '<th>'.$this->format_column_name($grade_item).'</th>';

            /// add a column_feedback column
            if ($this->export_feedback) {
                echo '<th>'.$this->format_column_name($grade_item, true).'</th>';
            }
        }
        echo '</tr>';
        /// Print all the lines of data.

        $i = 0;
        $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
        $gui->require_active_enrolment($this->onlyactive);
        $gui->init();
        while ($userdata = $gui->next_user()) {
            // number of preview rows
            if ($this->previewrows and $this->previewrows <= $i) {
                break;
            }
            $user = $userdata->user;
            if ($require_user_idnumber and empty($user->idnumber)) {
                // some exports require user idnumber so we can match up students when importing the data
                continue;
            }

            $gradeupdated = false; // if no grade is update at all for this user, do not display this row
            $rowstr = '';
            foreach ($this->columns as $itemid=>$unused) {
                $gradetxt = $this->format_grade($userdata->grades[$itemid]);

                // get the status of this grade, and put it through track to get the status
                $g = new grade_export_update_buffer();
                $grade_grade = new grade_grade(array('itemid'=>$itemid, 'userid'=>$user->id));
                $status = $g->track($grade_grade);

                if ($this->updatedgradesonly && ($status == 'nochange' || $status == 'unknown')) {
                    $rowstr .= '<td>'.get_string('unchangedgrade', 'grades').'</td>';
                } else {
                    $rowstr .= "<td>$gradetxt</td>";
                    $gradeupdated = true;
                }

                if ($this->export_feedback) {
                    $rowstr .=  '<td>'.$this->format_feedback($userdata->feedbacks[$itemid]).'</td>';
                }
            }

            // if we are requesting updated grades only, we are not interested in this user at all
            if (!$gradeupdated && $this->updatedgradesonly) {
                continue;
            }

            echo '<tr>';
            echo "<td>$user->firstname</td><td>$user->lastname</td><td>$user->idnumber</td><td>$user->institution</td><td>$user->department</td><td>$user->email</td>";
            echo $rowstr;
            echo "</tr>";

            $i++; // increment the counter
        }
        echo '</table>';
        $gui->close();
    }

 public function print_grades()
 {
     global $CFG;
     $exporttracking = $this->track_exports();
     $course = $this->course;
     $strgrades = get_string('grades');
     $profilefields = grade_helper::get_user_profile_fields($this->course->id, $this->usercustomfields);
     $courseid = $course->id;
     $shortname = format_string($this->course->shortname, true, array('context' => context_course::instance($this->course->id)));
     $downloadfilename = clean_filename("{$shortname} {$strgrades}");
     $csvexport = new csv_export_writer($this->separator);
     $csvexport->filename = clean_filename("{$downloadfilename}.csv");
     // Print names of all the fields.
     $exporttitle = array();
     $shortname = format_string($this->course->shortname, true, array('context' => context_course::instance($this->course->id)));
     $exporttitle[] = $shortname . "";
     $csvexport->add_data($exporttitle);
     $exporttitle = array();
     $exporttitle[] = "TERM";
     $exporttitle[] = "Class Number";
     $exporttitle[] = "ID";
     $exporttitle[] = "Final Grade";
     $exporttitle[] = "" . get_string("firstname");
     $exporttitle[] = "" . get_string("lastname");
     $exporttitle[] = "" . get_string("idnumber");
     $exporttitle[] = "" . get_string("institution");
     $exporttitle[] = "" . get_string("department");
     $exporttitle[] = "" . get_string("email");
     foreach ($this->columns as $gradeitem) {
         $exporttitle[] = trim($gradeitem->get_name());
     }
     $csvexport->add_data($exporttitle);
     $sseat = $this->primcomp($courseid);
     // Print all the lines of data.
     $geub = new grade_export_update_buffer();
     $gui = new graded_users_iterator($this->course, $this->columns, $this->groupid);
     $gui->require_active_enrolment($this->onlyactive);
     $gui->allow_user_custom_fields($this->usercustomfields);
     $gui->init();
     while ($userdata = $gui->next_user()) {
         $exportdata = array();
         $user = $userdata->user;
         if (!isset($sseat[$user->username])) {
             continue;
         }
         foreach ($userdata->grades as $itemid => $grade) {
             if ($this->finalitemid == $itemid) {
                 $finalletter = $this->format_grade($userdata->grades[$itemid]);
                 if ($this->displaytype == 1) {
                     $userdata->grades[$itemid]->finalgrade = $finalletter;
                 }
             }
         }
         $coarr = explode('.', $sseat[$user->username]);
         $exportdata[] = $coarr[0];
         $exportdata[] = $coarr[1];
         $exportdata[] = $user->username;
         $exportdata[] = $finalletter;
         $exportdata[] = $user->firstname;
         $exportdata[] = $user->lastname;
         $exportdata[] = $user->idnumber;
         $exportdata[] = $user->institution;
         $exportdata[] = $user->department;
         $exportdata[] = $user->email;
         foreach ($userdata->grades as $itemid => $grade) {
             $gradestr = $userdata->grades[$itemid]->finalgrade;
             $exportdata[] = $gradestr;
         }
         $csvexport->add_data($exportdata);
     }
     $gui->close();
     $geub->close();
     $csvexport->download_file();
     exit;
 }