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Differences Between: [Versions 310 and 402] [Versions 311 and 402] [Versions 39 and 402]

   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  require_once($CFG->libdir.'/gradelib.php');
  19  
  20  /**
  21   * Returns new improtcode for current user
  22   * @return int importcode
  23   */
  24  function get_new_importcode() {
  25      global $USER, $DB;
  26  
  27      $importcode = time();
  28      while ($DB->get_record('grade_import_values', array('importcode' => $importcode, 'importer' => $USER->id))) {
  29          $importcode--;
  30      }
  31  
  32      return $importcode;
  33  }
  34  
  35  /**
  36   * given an import code, commits all entries in buffer tables
  37   * (grade_import_value and grade_import_newitem)
  38   * If this function is called, we assume that all data collected
  39   * up to this point is fine and we can go ahead and commit
  40   * @param int $courseid - ID of the course.
  41   * @param int $importcode - Import batch identifier.
  42   * @param bool $importfeedback - Whether to import feedback as well.
  43   * @param bool $verbose - Print feedback and continue button.
  44   * @return bool success
  45   */
  46  function grade_import_commit($courseid, $importcode, $importfeedback=true, $verbose=true) {
  47      global $CFG, $USER, $DB, $OUTPUT;
  48  
  49      $failed = false;
  50      $executionerrors = false;
  51      $commitstart = time(); // start time in case we need to roll back
  52      $newitemids = array(); // array to hold new grade_item ids from grade_import_newitem table, mapping array
  53  
  54      /// first select distinct new grade_items with this batch
  55      $params = array($importcode, $USER->id);
  56      if ($newitems = $DB->get_records_sql("SELECT *
  57                                             FROM {grade_import_newitem}
  58                                            WHERE importcode = ? AND importer=?", $params)) {
  59  
  60          // instances of the new grade_items created, cached
  61          // in case grade_update fails, so that we can remove them
  62          $instances = array();
  63          foreach ($newitems as $newitem) {
  64              // get all grades with this item
  65  
  66              $gradeimportparams = array('newgradeitem' => $newitem->id, 'importcode' => $importcode, 'importer' => $USER->id);
  67              if ($grades = $DB->get_records('grade_import_values', $gradeimportparams)) {
  68                  /// create a new grade item for this - must use false as second param!
  69                  /// TODO: we need some bounds here too
  70                  $gradeitem = new grade_item(array('courseid'=>$courseid, 'itemtype'=>'manual', 'itemname'=>$newitem->itemname), false);
  71                  $gradeitem->insert('import');
  72                  $instances[] = $gradeitem;
  73  
  74                  // insert each individual grade to this new grade item
  75                  foreach ($grades as $grade) {
  76                      if (!$gradeitem->update_final_grade($grade->userid, $grade->finalgrade, 'import',
  77                          $grade->feedback, FORMAT_MOODLE, null, null, true)) {
  78                          $failed = true;
  79                          break 2;
  80                      }
  81                  }
  82              }
  83          }
  84  
  85          if ($failed) {
  86              foreach ($instances as $instance) {
  87                  $gradeitem->delete('import');
  88              }
  89              import_cleanup($importcode);
  90              return false;
  91          }
  92      }
  93  
  94      /// then find all existing items
  95  
  96      if ($gradeitems = $DB->get_records_sql("SELECT DISTINCT (itemid)
  97                                               FROM {grade_import_values}
  98                                              WHERE importcode = ? AND importer=? AND itemid > 0",
  99                                              array($importcode, $USER->id))) {
 100  
 101          $modifieditems = array();
 102  
 103          foreach ($gradeitems as $itemid=>$notused) {
 104  
 105              if (!$gradeitem = new grade_item(array('id'=>$itemid))) {
 106                  // not supposed to happen, but just in case
 107                  import_cleanup($importcode);
 108                  return false;
 109              }
 110              // get all grades with this item
 111              $gradeimportparams = array('itemid' => $itemid, 'importcode' => $importcode, 'importer' => $USER->id);
 112              if ($grades = $DB->get_records('grade_import_values', $gradeimportparams)) {
 113  
 114                  // make the grades array for update_grade
 115                  foreach ($grades as $grade) {
 116                      if (!$importfeedback || $grade->feedback === null) {
 117                          $grade->feedback = false; // ignore it
 118                      }
 119                      if ($grade->importonlyfeedback) {
 120                          // False means do not change. See grade_itme::update_final_grade().
 121                          $grade->finalgrade = false;
 122                      }
 123                      if (!$gradeitem->update_final_grade($grade->userid, $grade->finalgrade, 'import',
 124                              $grade->feedback, FORMAT_MOODLE, null, null, true)) {
 125                          $errordata = new stdClass();
 126                          $errordata->itemname = $gradeitem->itemname;
 127                          $errordata->userid = $grade->userid;
 128                          $executionerrors[] = get_string('errorsettinggrade', 'grades', $errordata);
 129                          $failed = true;
 130                          break 2;
 131                      }
 132                  }
 133                  //$itemdetails -> idnumber = $gradeitem->idnumber;
 134                  $modifieditems[] = $itemid;
 135  
 136              }
 137          }
 138  
 139          if ($failed) {
 140              if ($executionerrors && $verbose) {
 141                  echo $OUTPUT->notification(get_string('gradeimportfailed', 'grades'));
 142                  foreach ($executionerrors as $errorstr) {
 143                      echo $OUTPUT->notification($errorstr);
 144                  }
 145              }
 146              import_cleanup($importcode);
 147              return false;
 148          }
 149      }
 150  
 151      if ($verbose) {
 152          echo $OUTPUT->notification(get_string('importsuccess', 'grades'), 'notifysuccess');
 153          $unenrolledusers = get_unenrolled_users_in_import($importcode, $courseid);
 154          if ($unenrolledusers) {
 155              $list = array();
 156              foreach ($unenrolledusers as $u) {
 157                  $u->fullname = fullname($u);
 158                  $list[] = get_string('usergrade', 'grades', $u);
 159              }
 160              echo $OUTPUT->notification(get_string('unenrolledusersinimport', 'grades', html_writer::alist($list)), 'notifysuccess');
 161          }
 162          echo $OUTPUT->continue_button($CFG->wwwroot.'/grade/index.php?id='.$courseid);
 163      }
 164      // clean up
 165      import_cleanup($importcode);
 166  
 167      return true;
 168  }
 169  
 170  /**
 171   * This function returns an array of grades that were included in the import,
 172   * but where the user does not currently have a graded role on the course. These grades
 173   * are still stored in the database, but will not be visible in the gradebook unless
 174   * this user subsequently enrols on the course in a graded roles.
 175   *
 176   * The returned objects have fields useridnumber and gradeidnumber, plus enough user name fields to pass to {@see fullname}
 177   *
 178   * @param integer $importcode import batch identifier
 179   * @param integer $courseid the course we are importing to.
 180   * @return mixed and array of user objects, or false if none.
 181   */
 182  function get_unenrolled_users_in_import($importcode, $courseid) {
 183      global $CFG, $DB;
 184  
 185      $coursecontext = context_course::instance($courseid);
 186  
 187      // We want to query both the current context and parent contexts.
 188      list($relatedctxsql, $relatedctxparams) = $DB->get_in_or_equal($coursecontext->get_parent_context_ids(true), SQL_PARAMS_NAMED, 'relatedctx');
 189  
 190      // Users with a gradeable role.
 191      list($gradebookrolessql, $gradebookrolesparams) = $DB->get_in_or_equal(explode(',', $CFG->gradebookroles), SQL_PARAMS_NAMED, 'grbr');
 192  
 193      $usernamefields = core_user\fields::for_name()->get_sql('u', false, '', '', false);
 194  
 195      // Enrolled users.
 196      $context = context_course::instance($courseid);
 197      list($enrolledsql, $enrolledparams) = get_enrolled_sql($context);
 198      list($sort, $sortparams) = users_order_by_sql('u');
 199  
 200      $sql = "SELECT giv.id, {$usernamefields->selects}, u.idnumber AS useridnumber,
 201                     COALESCE(gi.idnumber, gin.itemname) AS gradeidnumber
 202                FROM {grade_import_values} giv
 203                JOIN {user} u
 204                     ON giv.userid = u.id
 205                LEFT JOIN {grade_items} gi
 206                          ON gi.id = giv.itemid
 207                LEFT JOIN {grade_import_newitem} gin
 208                          ON gin.id = giv.newgradeitem
 209                LEFT JOIN ($enrolledsql) je
 210                          ON je.id = u.id
 211                LEFT JOIN {role_assignments} ra
 212                          ON (giv.userid = ra.userid AND ra.roleid $gradebookrolessql AND ra.contextid $relatedctxsql)
 213               WHERE giv.importcode = :importcode
 214                     AND (ra.id IS NULL OR je.id IS NULL)
 215            ORDER BY gradeidnumber, $sort";
 216      $params = array_merge($gradebookrolesparams, $enrolledparams, $sortparams, $relatedctxparams);
 217      $params['importcode'] = $importcode;
 218  
 219      return $DB->get_records_sql($sql, $params);
 220  }
 221  
 222  /**
 223   * removes entries from grade import buffer tables grade_import_value and grade_import_newitem
 224   * after a successful import, or during an import abort
 225   * @param string importcode - import batch identifier
 226   */
 227  function import_cleanup($importcode) {
 228      global $USER, $DB;
 229  
 230      // remove entries from buffer table
 231      $DB->delete_records('grade_import_values', array('importcode' => $importcode, 'importer' => $USER->id));
 232      $DB->delete_records('grade_import_newitem', array('importcode' => $importcode, 'importer' => $USER->id));
 233  }
 234  
 235