Changes made

VoiceController.php

@@ -1,4 +1,4 @@
-public function voice(Request $request){
+<!-- public function voice(Request $request){
     $request->validate([
         'question_id'=>'required|int|exists:questions,id',
         'value'=>'required|boolean',
@@ -45,4 +45,57 @@ public function voice(Request $request){
         'status'=>200,
         'message'=>'Voting completed successfully'
     ]);
-}
+} -->
+
+public function voice(Request $request) {
+
+    // using validator() helper method will throw correct validation error
+
+    validator ($request->all(),[
+        'question_id' => 'required|int|exists:questions,id',
+        'value' => 'required|boolean',
+    ])->validate();
+
+
+    // Assuming Voice model is associated with one Question model
+
+    $voice = Voice::with('question')
+        ->where('question_id', $request->post('question_id')
+        ->where('user_id', auth()->id)
+        ->first();
+
+    if ($voice !== null && $voice->value !== $request->post('value')) {
+        $voice->update([
+            'value'=>$request->post('value')
+        ]);
+
+        return response()->json([
+            'message'=>'Your voice has been updated'
+        ], 201);
+    }
+
+    else if ($voice !== null && $voice->value == $request->post('value')) {
+        return response()->json([
+            'message' => 'Sorry you are not allowed to vote more than once'
+        ], 500);
+    }
+    else {
+        $voice->create([
+            'user_id' => auth()->id(),
+            'question_id' => $request->post('question_id),
+            'value' => $request->post('value')
+        ]);
+
+        return response()->json([
+            'message'=>'Voting completed successfully'
+        ], 200);
+    }
+
+}
+
+// The modal function that shows the one to one association of Voice to Question Model
+
+public function question()
+    {
+        return $this->belongsTo(Question::class);
+    }