[Summary view]

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

   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   * Essay question definition class.
  19   *
  20   * @package    qtype
  21   * @subpackage essay
  22   * @copyright  2009 The Open University
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  require_once($CFG->dirroot . '/question/type/questionbase.php');
  30  
  31  /**
  32   * Represents an essay question.
  33   *
  34   * @copyright  2009 The Open University
  35   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  36   */
  37  class qtype_essay_question extends question_with_responses {
  38  
  39      public $responseformat;
  40  
  41      /** @var int Indicates whether an inline response is required ('0') or optional ('1')  */
  42      public $responserequired;
  43  
  44      public $responsefieldlines;
  45  
  46      /** @var int indicates whether the minimum number of words required */
  47      public $minwordlimit;
  48  
  49      /** @var int indicates whether the maximum number of words required */
  50      public $maxwordlimit;
  51  
  52      public $attachments;
  53  
  54      /** @var int maximum file size in bytes */
  55      public $maxbytes;
  56  
  57      /** @var int The number of attachments required for a response to be complete. */
  58      public $attachmentsrequired;
  59  
  60      public $graderinfo;
  61      public $graderinfoformat;
  62      public $responsetemplate;
  63      public $responsetemplateformat;
  64  
  65      /** @var array The string array of file types accepted upon file submission. */
  66      public $filetypeslist;
  67  
  68      public function make_behaviour(question_attempt $qa, $preferredbehaviour) {
  69          return question_engine::make_behaviour('manualgraded', $qa, $preferredbehaviour);
  70      }
  71  
  72      /**
  73       * @param moodle_page the page we are outputting to.
  74       * @return qtype_essay_format_renderer_base the response-format-specific renderer.
  75       */
  76      public function get_format_renderer(moodle_page $page) {
  77          return $page->get_renderer('qtype_essay', 'format_' . $this->responseformat);
  78      }
  79  
  80      public function get_expected_data() {
  81          if ($this->responseformat == 'editorfilepicker') {
  82              $expecteddata = array('answer' => question_attempt::PARAM_RAW_FILES);
  83          } else {
  84              $expecteddata = array('answer' => PARAM_RAW);
  85          }
  86          $expecteddata['answerformat'] = PARAM_ALPHANUMEXT;
  87          if ($this->attachments != 0) {
  88              $expecteddata['attachments'] = question_attempt::PARAM_FILES;
  89          }
  90          return $expecteddata;
  91      }
  92  
  93      public function summarise_response(array $response) {
  94          $output = null;
  95  
  96          if (isset($response['answer'])) {
  97              $output .= question_utils::to_plain_text($response['answer'],
  98                  $response['answerformat'], array('para' => false));
  99          }
 100  
 101          if (isset($response['attachments'])  && $response['attachments']) {
 102              $attachedfiles = [];
 103              foreach ($response['attachments']->get_files() as $file) {
 104                  $attachedfiles[] = $file->get_filename() . ' (' . display_size($file->get_filesize()) . ')';
 105              }
 106              if ($attachedfiles) {
 107                  $output .= get_string('attachedfiles', 'qtype_essay', implode(', ', $attachedfiles));
 108              }
 109          }
 110          return $output;
 111      }
 112  
 113      public function un_summarise_response(string $summary) {
 114          if (empty($summary)) {
 115              return [];
 116          }
 117  
 118          if (str_contains($this->responseformat, 'editor')) {
 119              return ['answer' => text_to_html($summary), 'answerformat' => FORMAT_HTML];
 120          } else {
 121              return ['answer' => $summary, 'answerformat' => FORMAT_PLAIN];
 122          }
 123      }
 124  
 125      public function get_correct_response() {
 126          return null;
 127      }
 128  
 129      public function is_complete_response(array $response) {
 130          // Determine if the given response has online text and attachments.
 131          $hasinlinetext = array_key_exists('answer', $response) && ($response['answer'] !== '');
 132  
 133          // If there is a response and min/max word limit is set in the form then validate the number of words in response.
 134          if ($hasinlinetext) {
 135              if ($this->check_input_word_count($response['answer'])) {
 136                  return false;
 137              }
 138          }
 139          $hasattachments = array_key_exists('attachments', $response)
 140              && $response['attachments'] instanceof question_response_files;
 141  
 142          // Determine the number of attachments present.
 143          if ($hasattachments) {
 144              // Check the filetypes.
 145              $filetypesutil = new \core_form\filetypes_util();
 146              $allowlist = $filetypesutil->normalize_file_types($this->filetypeslist);
 147              $wrongfiles = array();
 148              foreach ($response['attachments']->get_files() as $file) {
 149                  if (!$filetypesutil->is_allowed_file_type($file->get_filename(), $allowlist)) {
 150                      $wrongfiles[] = $file->get_filename();
 151                  }
 152              }
 153              if ($wrongfiles) { // At least one filetype is wrong.
 154                  return false;
 155              }
 156              $attachcount = count($response['attachments']->get_files());
 157          } else {
 158              $attachcount = 0;
 159          }
 160  
 161          // Determine if we have /some/ content to be graded.
 162          $hascontent = $hasinlinetext || ($attachcount > 0);
 163  
 164          // Determine if we meet the optional requirements.
 165          $meetsinlinereq = $hasinlinetext || (!$this->responserequired) || ($this->responseformat == 'noinline');
 166          $meetsattachmentreq = ($attachcount >= $this->attachmentsrequired);
 167  
 168          // The response is complete iff all of our requirements are met.
 169          return $hascontent && $meetsinlinereq && $meetsattachmentreq;
 170      }
 171  
 172      /**
 173       * Return null if is_complete_response() returns true
 174       * otherwise, return the minmax-limit error message
 175       *
 176       * @param array $response
 177       * @return string
 178       */
 179      public function get_validation_error(array $response) {
 180          if ($this->is_complete_response($response)) {
 181              return '';
 182          }
 183          return $this->check_input_word_count($response['answer']);
 184      }
 185  
 186      public function is_gradable_response(array $response) {
 187          // Determine if the given response has online text and attachments.
 188          if (array_key_exists('answer', $response) && ($response['answer'] !== '')) {
 189              return true;
 190          } else if (array_key_exists('attachments', $response)
 191                  && $response['attachments'] instanceof question_response_files) {
 192              return true;
 193          } else {
 194              return false;
 195          }
 196      }
 197  
 198      public function is_same_response(array $prevresponse, array $newresponse) {
 199          if (array_key_exists('answer', $prevresponse) && $prevresponse['answer'] !== $this->responsetemplate) {
 200              $value1 = (string) $prevresponse['answer'];
 201          } else {
 202              $value1 = '';
 203          }
 204          if (array_key_exists('answer', $newresponse) && $newresponse['answer'] !== $this->responsetemplate) {
 205              $value2 = (string) $newresponse['answer'];
 206          } else {
 207              $value2 = '';
 208          }
 209          return $value1 === $value2 && ($this->attachments == 0 ||
 210                  question_utils::arrays_same_at_key_missing_is_blank(
 211                  $prevresponse, $newresponse, 'attachments'));
 212      }
 213  
 214      public function check_file_access($qa, $options, $component, $filearea, $args, $forcedownload) {
 215          if ($component == 'question' && $filearea == 'response_attachments') {
 216              // Response attachments visible if the question has them.
 217              return $this->attachments != 0;
 218  
 219          } else if ($component == 'question' && $filearea == 'response_answer') {
 220              // Response attachments visible if the question has them.
 221              return $this->responseformat === 'editorfilepicker';
 222  
 223          } else if ($component == 'qtype_essay' && $filearea == 'graderinfo') {
 224              return $options->manualcomment && $args[0] == $this->id;
 225  
 226          } else {
 227              return parent::check_file_access($qa, $options, $component,
 228                      $filearea, $args, $forcedownload);
 229          }
 230      }
 231  
 232      /**
 233       * Return the question settings that define this question as structured data.
 234       *
 235       * @param question_attempt $qa the current attempt for which we are exporting the settings.
 236       * @param question_display_options $options the question display options which say which aspects of the question
 237       * should be visible.
 238       * @return mixed structure representing the question settings. In web services, this will be JSON-encoded.
 239       */
 240      public function get_question_definition_for_external_rendering(question_attempt $qa, question_display_options $options) {
 241          // This is a partial implementation, returning only the most relevant question settings for now,
 242          // ideally, we should return as much as settings as possible (depending on the state and display options).
 243  
 244          $settings = [
 245              'responseformat' => $this->responseformat,
 246              'responserequired' => $this->responserequired,
 247              'responsefieldlines' => $this->responsefieldlines,
 248              'attachments' => $this->attachments,
 249              'attachmentsrequired' => $this->attachmentsrequired,
 250              'maxbytes' => $this->maxbytes,
 251              'filetypeslist' => $this->filetypeslist,
 252              'responsetemplate' => $this->responsetemplate,
 253              'responsetemplateformat' => $this->responsetemplateformat,
 254              'minwordlimit' => $this->minwordlimit,
 255              'maxwordlimit' => $this->maxwordlimit,
 256          ];
 257  
 258          return $settings;
 259      }
 260  
 261      /**
 262       * Check the input word count and return a message to user
 263       * when the number of words are outside the boundary settings.
 264       *
 265       * @param string $responsestring
 266       * @return string|null
 267       .*/
 268      private function check_input_word_count($responsestring) {
 269          if (!$this->responserequired) {
 270              return null;
 271          }
 272          if (!$this->minwordlimit && !$this->maxwordlimit) {
 273              // This question does not care about the word count.
 274              return null;
 275          }
 276  
 277          // Count the number of words in the response string.
 278          $count = count_words($responsestring);
 279          if ($this->maxwordlimit && $count > $this->maxwordlimit) {
 280              return get_string('maxwordlimitboundary', 'qtype_essay',
 281                      ['limit' => $this->maxwordlimit, 'count' => $count]);
 282          } else if ($count < $this->minwordlimit) {
 283              return get_string('minwordlimitboundary', 'qtype_essay',
 284                      ['limit' => $this->minwordlimit, 'count' => $count]);
 285          } else {
 286              return null;
 287          }
 288      }
 289  
 290      /**
 291       * If this question uses word counts, then return a display of the current
 292       * count, and whether it is within limit, for when the question is being reviewed.
 293       *
 294       * @param array $response responses, as returned by
 295       *      {@see question_attempt_step::get_qt_data()}.
 296       * @return string If relevant to this question, a display of the word count.
 297       */
 298      public function get_word_count_message_for_review(array $response): string {
 299          if (!$this->minwordlimit && !$this->maxwordlimit) {
 300              // This question does not care about the word count.
 301              return '';
 302          }
 303  
 304          if (!array_key_exists('answer', $response) || ($response['answer'] === '')) {
 305              // No response.
 306              return '';
 307          }
 308  
 309          $count = count_words($response['answer']);
 310          if ($this->maxwordlimit && $count > $this->maxwordlimit) {
 311              return get_string('wordcounttoomuch', 'qtype_essay',
 312                      ['limit' => $this->maxwordlimit, 'count' => $count]);
 313          } else if ($count < $this->minwordlimit) {
 314              return get_string('wordcounttoofew', 'qtype_essay',
 315                      ['limit' => $this->minwordlimit, 'count' => $count]);
 316          } else {
 317              return get_string('wordcount', 'qtype_essay', $count);
 318          }
 319      }
 320  }