gradeimporter/locallib.php

<?php
// This file is part of
//
// 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/>.

defined('MOODLE_INTERNAL') || die();

function get_comments($cmid, $id) {
    global $DB, $USER, $CFG;
    $tp = $CFG->prefix; // gets moodle tables prefix, not everyone uses mdl_

    $sql = "
          SELECT gf.id gf_id,
                gf.grade,
                gf.comment gf_comment,
                gf.contextid gf_contextid,
                gf.fileid gf_fileid,
                gf.name gf_name,
                gs.name gs_name,
                gs.description gs_description,
                gst.name gst_name,
                gst.description gst_description,
                fileid
            FROM ".$tp."gradeimporter_feedback gf
            JOIN ".$tp."gradeimporter_submission gs
              ON gf.submissionid = gs.id
            JOIN ".$tp."gradeimporter_submissiontype gst
              ON gs.type = gst.id
          WHERE gf.studentid = ?";

    $records = $DB->get_records_sql($sql, array('studentid' => $USER->id));

    $data = array();
    if (count($records)) {
        foreach ($records as $value) {
            if (!array_key_exists($value->gst_name, $data)) {
                $data[$value->gst_name] = array();
            }

            $fileurl = buildurl($cmid, $value->gf_id, $value->gf_name);

            $data[$value->gst_name][] = array($value->gs_name, $value->grade, $value->gf_comment, $fileurl);
        }
    }

    return $data;
}

require_once($CFG->libdir . '/filelib.php');
require_once("$CFG->libdir/csvlib.class.php");


function buildurl($cmid, $fileid, $filename) {
    $fileurl = new moodle_url("/mod/gradeimporter/view.php", array('id' => $cmid, 'fileid' => $fileid, 'filename' => $filename, 'action' => 1));
    return "<a href=$fileurl target=_blank> $filename</a>";
}

function editSub($subname, $gradeimporterid, $cmid, $subid) {
    $url = new moodle_url("/mod/gradeimporter/submission.php", array('id' => $gradeimporterid,
                                                                    'cmid' => $cmid,
                                                                    'subid' => $subid,
                                                                    'update' => 1
                                                                  )
                           );
    return $subname.'<a href='.$url.' target="_blank"><i class="icon fa fa-pencil fa-fw"  title="'
                        .get_string('editSub', 'gradeimporter')
                        .'" aria-label="'
                        .get_string('editSub', 'gradeimporter').'"></i>';
}

function exportCSV($context) {
    $enrolledusers = get_enrolled_users($context, 'mod/gradeimporter:student');
    $header = array('id', 'name', 'email', 'grade', 'comment', 'file');

    $csvexport = new csv_export_writer();
    $csvexport->set_filename('config');
    $csvexport->add_data($header);

    foreach ($enrolledusers as $value) {
        $name = $value->firstname . ' ' . $value->lastname;
        $studententry = array($value->id, $name, $value->email, '', '', '');
        $csvexport->add_data($studententry);
    }

    $csvexport->download_file();
    // $dlfile = $csvexporter->download_array('config', $data);
}