Allow save correct answers for the next attempt - refs BT#11024

main/exercice/answer.class.php

@@ -832,4 +832,25 @@ class Answer
             </script>";
     }
 
+	/**
+	 * Check if a answer is correct by an answer auto id
+	 * @param $needle int The answer auto id
+	 * @return bool
+	 */
+	public function isCorrectByAutoId($needle)
+	{
+		$key = 0;
+
+		foreach ($this->autoId as $autoIdKey => $autoId) {
+			if ($autoId == $needle) {
+				$key = $autoIdKey;
+			}
+		}
+
+		if (!$key) {
+			return false;
+		}
+
+		return $this->isCorrect($key) ? true : false;
+	}
 }

main/exercice/exercise.class.php

@@ -8267,4 +8267,38 @@ class Exercise
         }
         return 1;
     }
+
+    /**
+     * Get the correct answers in all attempts
+     * @param int $learnPathId
+     * @param int $learnPathItemId
+     * @return array
+     */
+    public function getCorrectAnswersInAllAttempts($learnPathId = 0, $learnPathItemId = 0)
+    {
+        $attempts = Event::getExerciseResultsByUser(
+            api_get_user_id(),
+            $this->id,
+            api_get_course_int_id(),
+            api_get_session_id(),
+            $learnPathId,
+            $learnPathItemId,
+            'asc'
+        );
+
+        $corrects = [];
+
+        foreach ($attempts as $attempt) {
+            foreach ($attempt['question_list'] as $answer) {
+                $objAnswer = new Answer($answer['question_id']);
+                $isCorrect = $objAnswer->isCorrectByAutoId($answer['answer']);
+
+                if ($isCorrect) {
+                    $corrects[$answer['question_id']][] = $answer;
+                }
+            }
+        }
+
+        return $corrects;
+    }
 }

main/exercice/exercise_result.php

@@ -144,6 +144,26 @@ if ($objExercise->selectAttempts() > 0) {
             Display::display_footer();
         }
         exit;
+    } else {
+        $attempt_count++;
+        $remainingAttempts = $objExercise->selectAttempts() - $attempt_count;
+
+        if ($remainingAttempts) {
+            $attemptButton = Display::toolbarButton(
+                get_lang('AnotherAttempt'),
+                api_get_patth(WEB_CODE_PATH) . 'exercice/overview.php?' . api_get_cidreq() . '&' . http_build_query([
+                    'exerciseId' => $objExercise->id
+                ]),
+                'pencil-square-o',
+                'info'
+            );
+            $attemptMessage = sprintf(get_lang('RemainingXAttempts'), $remainingAttempts);
+
+            Display::display_normal_message(
+                sprintf("<p>%s</p> %s", $attemptMessage, $attemptButton),
+                false
+            );
+        }
     }
 }
 

main/exercice/exercise_submit.php

@@ -1116,7 +1116,17 @@ if (!empty($error)) {
             }
         }
 
-        $user_choice = isset($attempt_list[$questionId]) ? $attempt_list[$questionId] : null;
+        $user_choice = null;
+
+        if (isset($attempt_list[$questionId])) {
+            $user_choice = $attempt_list[$questionId];
+        } elseif ($objExercise->saveCorrectAnswers) {
+            $correctAnswers = $objExercise->getCorrectAnswersInAllAttempts($learnpath_id, $learnpath_item_id);
+
+            if (isset($correctAnswers[$questionId])) {
+                $user_choice = $correctAnswers[$questionId];
+            }
+        }
 
         $remind_highlight = '';