fixed result of exercises when you display for one answer

main/exercice/answer.class.php

@@ -80,8 +80,9 @@ class Answer
 		$this->cancel();
 
 		// fills arrays
-		Exercise::read($_REQUEST['exerciseId']);		
-		if($this->random_answers=='1')
+		$objExercise = new Exercise();
+		$objExercise->read($_REQUEST['exerciseId']);		
+		if($objExercise->random_answers=='1')
 		{
 			$this->readOrderedBy('rand()', '');// randomize answers
 		}
@@ -198,7 +199,7 @@ class Answer
 	/**
 	 * returns the autoincrement id identificator
 	 *
-	 * @author - Juan Carlos Raña
+	 * @author - Juan Carlos Ra<EFBFBD>a
 	 * @return - integer - answer num
 	 */
 	function selectAutoId($id)

main/exercice/exercise_show.php

@@ -577,7 +577,11 @@ if ($show_results) {
 					$ind = $row['answer'];
 					$choice[$ind] = 1;
 				}
-				$studentChoice=$choice[$answerId];
+
+				$numAnswer=$objAnswerTmp->selectAutoId($answerId);
+								
+				$studentChoice=$choice[$numAnswer];				
+				
 				if ($studentChoice) {
 					$questionScore+=$answerWeighting;
 					$totalScore+=$answerWeighting;
@@ -619,7 +623,10 @@ if ($show_results) {
 				$queryans = "select answer from ".$TBL_TRACK_ATTEMPT." where exe_id = '".Database::escape_string($id)."' and question_id= '".Database::escape_string($questionId)."'";
 				$resultans = Database::query($queryans, __FILE__, __LINE__);
 				$choice = Database::result($resultans,0,"answer");
-				$studentChoice=($choice == $answerId)?1:0;
+
+				$numAnswer=$objAnswerTmp->selectAutoId($answerId);
+								
+				$studentChoice=($choice == $numAnswer)?1:0;
 				if ($studentChoice) {
 				  	$questionScore+=$answerWeighting;
 					$totalScore+=$answerWeighting;