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

   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   * Scheduled allocator that internally executes the random allocation later
  20   *
  21   * @package     workshopallocation_scheduled
  22   * @subpackage  mod_workshop
  23   * @copyright   2012 David Mudrak <david@moodle.com>
  24   * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25   */
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  require_once (__DIR__ . '/../lib.php');            // interface definition
  30  require_once (__DIR__ . '/../../locallib.php');    // workshop internal API
  31  require_once (__DIR__ . '/../random/lib.php');     // random allocator
  32  require_once (__DIR__ . '/settings_form.php');     // our settings form
  33  
  34  /**
  35   * Allocates the submissions randomly in a cronjob task
  36   */
  37  class workshop_scheduled_allocator implements workshop_allocator {
  38  
  39      /** workshop instance */
  40      protected $workshop;
  41  
  42      /** workshop_scheduled_allocator_form with settings for the random allocator */
  43      protected $mform;
  44  
  45      /**
  46       * @param workshop $workshop Workshop API object
  47       */
  48      public function __construct(workshop $workshop) {
  49          $this->workshop = $workshop;
  50      }
  51  
  52      /**
  53       * Save the settings for the random allocator to execute it later
  54       */
  55      public function init() {
  56          global $PAGE, $DB;
  57  
  58          $result = new workshop_allocation_result($this);
  59  
  60          $customdata = array();
  61          $customdata['workshop'] = $this->workshop;
  62  
  63          $current = $DB->get_record('workshopallocation_scheduled',
  64              array('workshopid' => $this->workshop->id), '*', IGNORE_MISSING);
  65  
  66          $customdata['current'] = $current;
  67  
  68          $this->mform = new workshop_scheduled_allocator_form($PAGE->url, $customdata);
  69  
  70          if ($this->mform->is_cancelled()) {
  71              redirect($this->workshop->view_url());
  72          } else if ($settings = $this->mform->get_data()) {
  73              if (empty($settings->enablescheduled)) {
  74                  $enabled = false;
  75              } else {
  76                  $enabled = true;
  77              }
  78              if (empty($settings->reenablescheduled)) {
  79                  $reset = false;
  80              } else {
  81                  $reset = true;
  82              }
  83              $settings = workshop_random_allocator_setting::instance_from_object($settings);
  84              $this->store_settings($enabled, $reset, $settings, $result);
  85              if ($enabled) {
  86                  $msg = get_string('resultenabled', 'workshopallocation_scheduled');
  87              } else {
  88                  $msg = get_string('resultdisabled', 'workshopallocation_scheduled');
  89              }
  90              $result->set_status(workshop_allocation_result::STATUS_CONFIGURED, $msg);
  91              return $result;
  92          } else {
  93              // this branch is executed if the form is submitted but the data
  94              // doesn't validate and the form should be redisplayed
  95              // or on the first display of the form.
  96  
  97              if ($current !== false) {
  98                  $data = workshop_random_allocator_setting::instance_from_text($current->settings);
  99                  $data->enablescheduled = $current->enabled;
 100                  $this->mform->set_data($data);
 101              }
 102  
 103              $result->set_status(workshop_allocation_result::STATUS_VOID);
 104              return $result;
 105          }
 106      }
 107  
 108      /**
 109       * Returns the HTML code to print the user interface
 110       */
 111      public function ui() {
 112          global $PAGE;
 113  
 114          $output = $PAGE->get_renderer('mod_workshop');
 115  
 116          $out = $output->container_start('scheduled-allocator');
 117          // the nasty hack follows to bypass the sad fact that moodle quickforms do not allow to actually
 118          // return the HTML content, just to display it
 119          ob_start();
 120          $this->mform->display();
 121          $out .= ob_get_contents();
 122          ob_end_clean();
 123          $out .= $output->container_end();
 124  
 125          return $out;
 126      }
 127  
 128      /**
 129       * Executes the allocation
 130       *
 131       * @return workshop_allocation_result
 132       */
 133      public function execute() {
 134          global $DB;
 135  
 136          $result = new workshop_allocation_result($this);
 137  
 138          // make sure the workshop itself is at the expected state
 139  
 140          if ($this->workshop->phase != workshop::PHASE_SUBMISSION) {
 141              $result->set_status(workshop_allocation_result::STATUS_FAILED,
 142                  get_string('resultfailedphase', 'workshopallocation_scheduled'));
 143              return $result;
 144          }
 145  
 146          if (empty($this->workshop->submissionend)) {
 147              $result->set_status(workshop_allocation_result::STATUS_FAILED,
 148                  get_string('resultfaileddeadline', 'workshopallocation_scheduled'));
 149              return $result;
 150          }
 151  
 152          if ($this->workshop->submissionend > time()) {
 153              $result->set_status(workshop_allocation_result::STATUS_VOID,
 154                  get_string('resultvoiddeadline', 'workshopallocation_scheduled'));
 155              return $result;
 156          }
 157  
 158          $current = $DB->get_record('workshopallocation_scheduled',
 159              array('workshopid' => $this->workshop->id, 'enabled' => 1), '*', IGNORE_MISSING);
 160  
 161          if ($current === false) {
 162              $result->set_status(workshop_allocation_result::STATUS_FAILED,
 163                  get_string('resultfailedconfig', 'workshopallocation_scheduled'));
 164              return $result;
 165          }
 166  
 167          if (!$current->enabled) {
 168              $result->set_status(workshop_allocation_result::STATUS_VOID,
 169                  get_string('resultdisabled', 'workshopallocation_scheduled'));
 170              return $result;
 171          }
 172  
 173          if (!is_null($current->timeallocated) and $current->timeallocated >= $this->workshop->submissionend) {
 174              $result->set_status(workshop_allocation_result::STATUS_VOID,
 175                  get_string('resultvoidexecuted', 'workshopallocation_scheduled'));
 176              return $result;
 177          }
 178  
 179          // so now we know that we are after the submissions deadline and either the scheduled allocation was not
 180          // executed yet or it was but the submissions deadline has been prolonged (and hence we should repeat the
 181          // allocations)
 182  
 183          $settings = workshop_random_allocator_setting::instance_from_text($current->settings);
 184          $randomallocator = $this->workshop->allocator_instance('random');
 185          $randomallocator->execute($settings, $result);
 186  
 187          // store the result in the instance's table
 188          $update = new stdClass();
 189          $update->id = $current->id;
 190          $update->timeallocated = $result->get_timeend();
 191          $update->resultstatus = $result->get_status();
 192          $update->resultmessage = $result->get_message();
 193          $update->resultlog = json_encode($result->get_logs());
 194  
 195          $DB->update_record('workshopallocation_scheduled', $update);
 196  
 197          return $result;
 198      }
 199  
 200      /**
 201       * Delete all data related to a given workshop module instance
 202       *
 203       * @see workshop_delete_instance()
 204       * @param int $workshopid id of the workshop module instance being deleted
 205       * @return void
 206       */
 207      public static function delete_instance($workshopid) {
 208          // TODO
 209          return;
 210      }
 211  
 212      /**
 213       * Stores the pre-defined random allocation settings for later usage
 214       *
 215       * @param bool $enabled is the scheduled allocation enabled
 216       * @param bool $reset reset the recent execution info
 217       * @param workshop_random_allocator_setting $settings settings form data
 218       * @param workshop_allocation_result $result logger
 219       */
 220      protected function store_settings($enabled, $reset, workshop_random_allocator_setting $settings, workshop_allocation_result $result) {
 221          global $DB;
 222  
 223  
 224          $data = new stdClass();
 225          $data->workshopid = $this->workshop->id;
 226          $data->enabled = $enabled;
 227          $data->submissionend = $this->workshop->submissionend;
 228          $data->settings = $settings->export_text();
 229  
 230          if ($reset) {
 231              $data->timeallocated = null;
 232              $data->resultstatus = null;
 233              $data->resultmessage = null;
 234              $data->resultlog = null;
 235          }
 236  
 237          $result->log($data->settings, 'debug');
 238  
 239          $current = $DB->get_record('workshopallocation_scheduled', array('workshopid' => $data->workshopid), '*', IGNORE_MISSING);
 240  
 241          if ($current === false) {
 242              $DB->insert_record('workshopallocation_scheduled', $data);
 243  
 244          } else {
 245              $data->id = $current->id;
 246              $DB->update_record('workshopallocation_scheduled', $data);
 247          }
 248      }
 249  }