add grading to choose-n exercises

rage · Aug 10, 2023 · 98e579f · 98e579f
1 parent 2a8a4b3
commit 98e579f
Showing 1 changed file with 9 additions and 2 deletions.
diff --git a/services/quizzes/src/grading/assessment/choose-n.ts b/services/quizzes/src/grading/assessment/choose-n.ts
@@ -8,13 +8,20 @@ const assessChooseN = (
   if (!quizItemAnswer.selectedOptionIds) {
     throw new Error("No options selected")
   }
-
+  const totalCorrectOptions = quizItem.options.filter((item) => item.correct).length
+  let correctOptions = 0
+  quizItemAnswer.selectedOptionIds.forEach((selectedOption) => {
+    const option = quizItem.options.filter((item) => item.id === selectedOption)[0]
+    if (option && option.correct) {
+      correctOptions++
+    }
+  })
   const correct = quizItemAnswer.selectedOptionIds.length == quizItem.n
 
   return {
     quizItemId: quizItem.id,
     correct,
-    correctnessCoefficient: correct ? 1 : 0,
+    correctnessCoefficient: correctOptions / totalCorrectOptions,
   }
 }