コード例 #1
0
 /**
  * @desc Checks if PG code is acceptable.
  * @param string $code The PG Code.
  * @throws Exception If there is an error with the PG code.
  * @return object Information on the question.
  */
 public function CodeCheck($code)
 {
     $haserrors = false;
     $haswarnings = false;
     $client = WebworkClient::Get();
     $env = WebworkQuestion::DefaultEnvironment();
     $result = $client->renderProblem($env, $code);
     if (isset($result->errors) && $result->errors != '' && $result->errors != null) {
         $haserrors = true;
     }
     if (isset($result->warnings) && $result->warnings != '' && $result->warnings != null) {
         $haswarnings = true;
     }
     //Validity Check
     if ($haserrors == false && $haswarnings == false) {
         $output = new stdClass();
         $output->grading = $result->grading;
         $derivation = new stdClass();
         $derivation->html = $result->output;
         $derivation->seed = $result->seed;
         $output->derivation = $derivation;
     } else {
         //NOW WE ARE INVALID going to throw
         $msg = "<h2>PG Code Problems</h2>";
         if ($haserrors) {
             $msg .= "<h3>Errors</h3>";
             $msg .= $result->errors;
         }
         if ($haswarnings) {
             $msg .= "<h3>Warnings</h3>";
             $msg .= $result->warnings;
         }
         throw new Exception($msg);
     }
     return $output;
 }
コード例 #2
0
ファイル: question.php プロジェクト: xiongchiamiov/wwmqt-svn
 /**
  * @desc Grades a particular question state.
  * @param object $state The state to grade.
  * @return true.
  */
 public function grade(&$state)
 {
     $seed = $state->responses['seed'];
     $answers = array();
     if (isset($state->responses['answers']) && is_array($state->responses['answers'])) {
         foreach ($state->responses['answers'] as $answerobj) {
             if (is_string($answerobj->field) && is_string($answerobj->answer)) {
                 array_push($answers, array('field' => $answerobj->field, 'answer' => $answerobj->answer));
             }
         }
     }
     if (isset($state->responses) && is_array($state->responses)) {
         foreach ($state->responses as $key => $value) {
             if (is_string($key) && is_string($value)) {
                 array_push($answers, array('field' => $key, 'answer' => $value));
             }
         }
     }
     //combine results from the answer array for checkboxes
     $checkanswers = array();
     $tempanswers = array();
     for ($i = 0; $i < count($answers); $i++) {
         $fieldname = $answers[$i]['field'];
         $pos = strpos($fieldname, '_');
         if ($pos !== FALSE) {
             $fieldname = substr($fieldname, 0, $pos);
             if (isset($checkanswers[$fieldname])) {
                 $checkanswers[$fieldname] .= $answers[$i]['answer'];
             } else {
                 $checkanswers[$fieldname] = $answers[$i]['answer'];
             }
         } else {
             array_push($tempanswers, $answers[$i]);
         }
     }
     foreach ($checkanswers as $key => $value) {
         array_push($tempanswers, array('field' => $key, 'answer' => $value));
     }
     $answers = $tempanswers;
     //base64 encoding
     for ($i = 0; $i < count($answers); $i++) {
         $answers[$i]['field'] = base64_encode($answers[$i]['field']);
         $answers[$i]['answer'] = base64_encode($answers[$i]['answer']);
     }
     $client = WebworkClient::Get();
     $env = WebworkQuestion::DefaultEnvironment();
     $env->problemSeed = $seed;
     $results = $client->renderProblemAndCheck($env, $this->_data->code, $answers);
     //process the question
     $question = $results->problem;
     $derivation = new stdClass();
     $derivation->seed = $question->seed;
     $derivation->html = base64_decode($question->output);
     $this->_derivation = $derivation;
     //assign a grade
     $answers = $results->answers;
     $state->raw_grade = $this->processAnswers($answers);
     // mark the state as graded
     $state->event = $state->event == QUESTION_EVENTCLOSE ? QUESTION_EVENTCLOSEANDGRADE : QUESTION_EVENTGRADE;
     //put the responses into the state to remember
     if (!is_array($state->responses)) {
         $state->responses = array();
     }
     $state->responses['answers'] = $answers;
     return true;
 }