group/import.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Bulk group creation registration script from a comma separated file
  20  *
  21  * @copyright 1999 Martin Dougiamas  http://dougiamas.com
  22  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @package core_group
  24  */
  25
  26 require_once('../config.php');
  27 require_once($CFG->dirroot.'/course/lib.php');
  28 require_once($CFG->dirroot.'/group/lib.php');
  29 include_once('import_form.php');
  30
  31 $id = required_param('id', PARAM_INT);    // Course id
  32
  33 $course = $DB->get_record('course', array('id'=>$id), '*', MUST_EXIST);
  34
  35 $PAGE->set_url('/group/import.php', array('id'=>$id));
  36
  37 require_login($course);
  38 $context = context_course::instance($id);
  39
  40 require_capability('moodle/course:managegroups', $context);
  41
  42 $strimportgroups = get_string('importgroups', 'core_group');
  43
  44 $PAGE->navbar->add($strimportgroups);
  45 navigation_node::override_active_url(new moodle_url('/group/index.php', array('id' => $course->id)));
  46 $PAGE->set_title("$course->shortname: $strimportgroups");
  47 $PAGE->set_heading($course->fullname);
  48 $PAGE->set_pagelayout('admin');
  49
  50 $returnurl = new moodle_url('/group/index.php', array('id'=>$id));
  51
  52 $importform = new groups_import_form(null, ['id' => $id]);
  53
  54 // If a file has been uploaded, then process it
  55 if ($importform->is_cancelled()) {
  56     redirect($returnurl);
  57
  58 } else if ($formdata = $importform->get_data()) {
  59     echo $OUTPUT->header();
  60
  61     $text = $importform->get_file_content('userfile');
  62     $text = preg_replace('!\r\n?!', "\n", $text);
  63
  64     require_once($CFG->libdir . '/csvlib.class.php');
  65     $importid = csv_import_reader::get_new_iid('groupimport');
  66     $csvimport = new csv_import_reader($importid, 'groupimport');
  67     $delimiter = $formdata->delimiter_name;
  68     $encoding = $formdata->encoding;
  69     $readcount = $csvimport->load_csv_content($text, $encoding, $delimiter);
  70
  71     if ($readcount === false) {
  72         print_error('csvfileerror', 'error', $PAGE->url, $csvimport->get_error());
  73     } else if ($readcount == 0) {
  74         print_error('csvemptyfile', 'error', $PAGE->url, $csvimport->get_error());
  75     } else if ($readcount == 1) {
  76         print_error('csvnodata', 'error', $PAGE->url);
  77     }
  78
  79     $csvimport->init();
  80
  81     unset($text);
  82
  83     // make arrays of valid fields for error checking
  84     $required = array("groupname" => 1);
  85     $optionalDefaults = array("lang" => 1);
  86     $optional = array("coursename" => 1,
  87             "idnumber" => 1,
  88             "groupidnumber" => 1,
  89             "description" => 1,
  90             "enrolmentkey" => 1,
  91             "groupingname" => 1,
  92             "enablemessaging" => 1,
  93         );
  94
  95     // --- get header (field names) ---
  96     // Using get_columns() ensures the Byte Order Mark is removed.
  97     $header = $csvimport->get_columns();
  98
  99     // check for valid field names
 100     foreach ($header as $i => $h) {
 101         $h = trim($h); $header[$i] = $h; // remove whitespace
 102         if (!(isset($required[$h]) or isset($optionalDefaults[$h]) or isset($optional[$h]))) {
 103                 print_error('invalidfieldname', 'error', $PAGE->url, $h);
 104             }
 105         if (isset($required[$h])) {
 106             $required[$h] = 2;
 107         }
 108     }
 109     // check for required fields
 110     foreach ($required as $key => $value) {
 111         if ($value < 2) {
 112             print_error('fieldrequired', 'error', $PAGE->url, $key);
 113         }
 114     }
 115     $linenum = 2; // since header is line 1
 116
 117     while ($line = $csvimport->next()) {
 118
 119         $newgroup = new stdClass();//to make Martin happy
 120         foreach ($optionalDefaults as $key => $value) {
 121             $newgroup->$key = current_language(); //defaults to current language
 122         }
 123         foreach ($line as $key => $value) {
 124             $record[$header[$key]] = trim($value);
 125         }
 126         if (trim(implode($line)) !== '') {
 127             // add a new group to the database
 128
 129             // add fields to object $user
 130             foreach ($record as $name => $value) {
 131                 // check for required values
 132                 if (isset($required[$name]) and !$value) {
 133                     print_error('missingfield', 'error', $PAGE->url, $name);
 134                 } else if ($name == "groupname") {
 135                     $newgroup->name = $value;
 136                 } else {
 137                 // normal entry
 138                     $newgroup->{$name} = $value;
 139                 }
 140             }
 141
 142             if (isset($newgroup->idnumber) && strlen($newgroup->idnumber)) {
 143                 //if idnumber is set, we use that.
 144                 //unset invalid courseid
 145                 if (!$mycourse = $DB->get_record('course', array('idnumber'=>$newgroup->idnumber))) {
 146                     echo $OUTPUT->notification(get_string('unknowncourseidnumber', 'error', $newgroup->idnumber));
 147                     unset($newgroup->courseid);//unset so 0 doesn't get written to database
 148                 } else {
 149                     $newgroup->courseid = $mycourse->id;
 150                 }
 151
 152             } else if (isset($newgroup->coursename) && strlen($newgroup->coursename)) {
 153                 //else use course short name to look up
 154                 //unset invalid coursename (if no id)
 155                 if (!$mycourse = $DB->get_record('course', array('shortname' => $newgroup->coursename))) {
 156                     echo $OUTPUT->notification(get_string('unknowncourse', 'error', $newgroup->coursename));
 157                     unset($newgroup->courseid);//unset so 0 doesn't get written to database
 158                 } else {
 159                     $newgroup->courseid = $mycourse->id;
 160                 }
 161
 162             } else {
 163                 //else use use current id
 164                 $newgroup->courseid = $id;
 165             }
 166             unset($newgroup->idnumber);
 167             unset($newgroup->coursename);
 168
 169             //if courseid is set
 170             if (isset($newgroup->courseid)) {
 171                 $linenum++;
 172                 $groupname = $newgroup->name;
 173                 $newgrpcoursecontext = context_course::instance($newgroup->courseid);
 174
 175                 ///Users cannot upload groups in courses they cannot update.
 176                 if (!has_capability('moodle/course:managegroups', $newgrpcoursecontext) or (!is_enrolled($newgrpcoursecontext) and !has_capability('moodle/course:view', $newgrpcoursecontext))) {
 177                     echo $OUTPUT->notification(get_string('nopermissionforcreation', 'group', $groupname));
 178
 179                 } else {
 180                     if (isset($newgroup->groupidnumber)) {
 181                         // The CSV field for the group idnumber is groupidnumber rather than
 182                         // idnumber as that field is already in use for the course idnumber.
 183                         $newgroup->groupidnumber = trim($newgroup->groupidnumber);
 184                         if (has_capability('moodle/course:changeidnumber', $newgrpcoursecontext)) {
 185                             $newgroup->idnumber = $newgroup->groupidnumber;
 186                             if ($existing = groups_get_group_by_idnumber($newgroup->courseid, $newgroup->idnumber)) {
 187                                 // idnumbers must be unique to a course but we shouldn't ignore group creation for duplicates
 188                                 $existing->name = s($existing->name);
 189                                 $existing->idnumber = s($existing->idnumber);
 190                                 $existing->problemgroup = $groupname;
 191                                 echo $OUTPUT->notification(get_string('groupexistforcoursewithidnumber', 'error', $existing));
 192                                 unset($newgroup->idnumber);
 193                             }
 194                         }
 195                         // Always drop the groupidnumber key. It's not a valid database field
 196                         unset($newgroup->groupidnumber);
 197                     }
 198                     if ($groupid = groups_get_group_by_name($newgroup->courseid, $groupname)) {
 199                         echo $OUTPUT->notification("$groupname :".get_string('groupexistforcourse', 'error', $groupname));
 200                     } else if ($groupid = groups_create_group($newgroup)) {
 201                         echo $OUTPUT->notification(get_string('groupaddedsuccesfully', 'group', $groupname), 'notifysuccess');
 202                     } else {
 203                         echo $OUTPUT->notification(get_string('groupnotaddederror', 'error', $groupname));
 204                         continue;
 205                     }
 206
 207                     // Add group to grouping
 208                     if (isset($newgroup->groupingname) && strlen($newgroup->groupingname)) {
 209                         $groupingname = $newgroup->groupingname;
 210                         if (! $groupingid = groups_get_grouping_by_name($newgroup->courseid, $groupingname)) {
 211                             $data = new stdClass();
 212                             $data->courseid = $newgroup->courseid;
 213                             $data->name = $groupingname;
 214                             if ($groupingid = groups_create_grouping($data)) {
 215                                 echo $OUTPUT->notification(get_string('groupingaddedsuccesfully', 'group', $groupingname), 'notifysuccess');
 216                             } else {
 217                                 echo $OUTPUT->notification(get_string('groupingnotaddederror', 'error', $groupingname));
 218                                 continue;
 219                             }
 220                         }
 221
 222                         // if we have reached here we definitely have a groupingid
 223                         $a = array('groupname' => $groupname, 'groupingname' => $groupingname);
 224                         try {
 225                             groups_assign_grouping($groupingid, $groupid);
 226                             echo $OUTPUT->notification(get_string('groupaddedtogroupingsuccesfully', 'group', $a), 'notifysuccess');
 227                         } catch (Exception $e) {
 228                             echo $OUTPUT->notification(get_string('groupnotaddedtogroupingerror', 'error', $a));
 229                         }
 230
 231                     }
 232                 }
 233             }
 234             unset ($newgroup);
 235         }
 236     }
 237
 238     $csvimport->close();
 239     echo $OUTPUT->single_button($returnurl, get_string('continue'), 'get');
 240     echo $OUTPUT->footer();
 241     die;
 242 }
 243
 244 /// Print the form
 245 echo $OUTPUT->header();
 246 echo $OUTPUT->heading_with_help($strimportgroups, 'importgroups', 'core_group');
 247 $importform->display();
 248 echo $OUTPUT->footer();