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Differences Between: [Versions 310 and 403] [Versions 311 and 403] [Versions 39 and 403] [Versions 400 and 403] [Versions 401 and 403] [Versions 402 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Core grades external functions
  19   *
  20   * @package    core_grades
  21   * @copyright  2012 Andrew Davis
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   * @since Moodle 2.7
  24   */
  25  
  26  use core_external\external_api;
  27  use core_external\external_function_parameters;
  28  use core_external\external_multiple_structure;
  29  use core_external\external_single_structure;
  30  use core_external\external_value;
  31  use core_external\external_warnings;
  32  
  33  defined('MOODLE_INTERNAL') || die;
  34  
  35  require_once("$CFG->libdir/gradelib.php");
  36  require_once("$CFG->dirroot/grade/edit/tree/lib.php");
  37  require_once("$CFG->dirroot/grade/querylib.php");
  38  
  39  /**
  40   * core grades functions
  41   */
  42  class core_grades_external extends external_api {
  43      /**
  44       * Returns description of method parameters
  45       *
  46       * @return external_function_parameters
  47       * @since Moodle 2.7
  48       */
  49      public static function update_grades_parameters() {
  50          return new external_function_parameters(
  51              array(
  52                  'source' => new external_value(PARAM_TEXT, 'The source of the grade update'),
  53                  'courseid' => new external_value(PARAM_INT, 'id of course'),
  54                  'component' => new external_value(PARAM_COMPONENT, 'A component, for example mod_forum or mod_quiz'),
  55                  'activityid' => new external_value(PARAM_INT, 'The activity ID'),
  56                  'itemnumber' => new external_value(
  57                      PARAM_INT, 'grade item ID number for modules that have multiple grades. Typically this is 0.'),
  58                  'grades' => new external_multiple_structure(
  59                      new external_single_structure(
  60                          array(
  61                              'studentid' => new external_value(PARAM_INT, 'Student ID'),
  62                              'grade' => new external_value(PARAM_FLOAT, 'Student grade'),
  63                              'str_feedback' => new external_value(
  64                                  PARAM_TEXT, 'A string representation of the feedback from the grader', VALUE_OPTIONAL),
  65                          )
  66                  ), 'Any student grades to alter', VALUE_DEFAULT, array()),
  67                  'itemdetails' => new external_single_structure(
  68                      array(
  69                          'itemname' => new external_value(
  70                              PARAM_ALPHANUMEXT, 'The grade item name', VALUE_OPTIONAL),
  71                          'idnumber' => new external_value(
  72                              PARAM_INT, 'Arbitrary ID provided by the module responsible for the grade item', VALUE_OPTIONAL),
  73                          'gradetype' => new external_value(
  74                              PARAM_INT, 'The type of grade (0 = none, 1 = value, 2 = scale, 3 = text)', VALUE_OPTIONAL),
  75                          'grademax' => new external_value(
  76                              PARAM_FLOAT, 'Maximum grade allowed', VALUE_OPTIONAL),
  77                          'grademin' => new external_value(
  78                              PARAM_FLOAT, 'Minimum grade allowed', VALUE_OPTIONAL),
  79                          'scaleid' => new external_value(
  80                              PARAM_INT, 'The ID of the custom scale being is used', VALUE_OPTIONAL),
  81                          'multfactor' => new external_value(
  82                              PARAM_FLOAT, 'Multiply all grades by this number', VALUE_OPTIONAL),
  83                          'plusfactor' => new external_value(
  84                              PARAM_FLOAT, 'Add this to all grades', VALUE_OPTIONAL),
  85                          'deleted' => new external_value(
  86                              PARAM_BOOL, 'True if the grade item should be deleted', VALUE_OPTIONAL),
  87                          'hidden' => new external_value(
  88                              PARAM_BOOL, 'True if the grade item is hidden', VALUE_OPTIONAL),
  89                      ), 'Any grade item settings to alter', VALUE_DEFAULT, array()
  90                  )
  91              )
  92          );
  93      }
  94  
  95      /**
  96       * Update a grade item and, optionally, student grades
  97       *
  98       * @param  string $source       The source of the grade update
  99       * @param  int $courseid        The course id
 100       * @param  string $component    Component name
 101       * @param  int $activityid      The activity id
 102       * @param  int $itemnumber      The item number
 103       * @param  array  $grades      Array of grades
 104       * @param  array  $itemdetails Array of item details
 105       * @return int                  A status flag
 106       * @since Moodle 2.7
 107       */
 108      public static function update_grades($source, $courseid, $component, $activityid,
 109          $itemnumber, $grades = array(), $itemdetails = array()) {
 110          global $CFG;
 111  
 112          $params = self::validate_parameters(
 113              self::update_grades_parameters(),
 114              array(
 115                  'source' => $source,
 116                  'courseid' => $courseid,
 117                  'component' => $component,
 118                  'activityid' => $activityid,
 119                  'itemnumber' => $itemnumber,
 120                  'grades' => $grades,
 121                  'itemdetails' => $itemdetails
 122              )
 123          );
 124  
 125          list($itemtype, $itemmodule) = normalize_component($params['component']);
 126  
 127          if (! $cm = get_coursemodule_from_id($itemmodule, $activityid)) {
 128              throw new moodle_exception('invalidcoursemodule');
 129          }
 130          $iteminstance = $cm->instance;
 131  
 132          $coursecontext = context_course::instance($params['courseid']);
 133  
 134          try {
 135              self::validate_context($coursecontext);
 136          } catch (Exception $e) {
 137              $exceptionparam = new stdClass();
 138              $exceptionparam->message = $e->getMessage();
 139              $exceptionparam->courseid = $params['courseid'];
 140              throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
 141          }
 142  
 143          $hidinggrades = false;
 144          $editinggradeitem = false;
 145          $editinggrades = false;
 146  
 147          $gradestructure = array();
 148          foreach ($grades as $grade) {
 149              $editinggrades = true;
 150              $gradestructure[ $grade['studentid'] ] = array('userid' => $grade['studentid'], 'rawgrade' => $grade['grade']);
 151          }
 152          if (!empty($params['itemdetails'])) {
 153              if (isset($params['itemdetails']['hidden'])) {
 154                  $hidinggrades = true;
 155              } else {
 156                  $editinggradeitem = true;
 157              }
 158          }
 159  
 160          if ($editinggradeitem && !has_capability('moodle/grade:manage', $coursecontext)) {
 161              throw new moodle_exception('nopermissiontoviewgrades', 'error', '', null,
 162                  'moodle/grade:manage required to edit grade information');
 163          }
 164          if ($hidinggrades && !has_capability('moodle/grade:hide', $coursecontext) &&
 165              !has_capability('moodle/grade:hide', $coursecontext)) {
 166              throw new moodle_exception('nopermissiontoviewgrades', 'error', '', null,
 167                  'moodle/grade:hide required to hide grade items');
 168          }
 169          if ($editinggrades && !has_capability('moodle/grade:edit', $coursecontext)) {
 170              throw new moodle_exception('nopermissiontoviewgrades', 'error', '', null,
 171                  'moodle/grade:edit required to edit grades');
 172          }
 173  
 174          return grade_update($params['source'], $params['courseid'], $itemtype,
 175              $itemmodule, $iteminstance, $itemnumber, $gradestructure, $params['itemdetails'], true);
 176      }
 177  
 178      /**
 179       * Returns description of method result value
 180       *
 181       * @return \core_external\external_description
 182       * @since Moodle 2.7
 183       */
 184      public static function update_grades_returns() {
 185          return new external_value(
 186              PARAM_INT,
 187              'A value like ' . GRADE_UPDATE_OK . ' => OK, ' . GRADE_UPDATE_FAILED . ' => FAILED
 188              as defined in lib/grade/constants.php'
 189          );
 190      }
 191  }