#41

backend/app/controllers/gekanator_games_controller.rb

@@ -2,16 +2,22 @@ class GekanatorGamesController < ApplicationController
   def create
     return head :unauthorized unless current_user
 
+    guessed_post_id = params.require(:guessed_post_id)
+    correct_post_id = params[:correct_post_id].presence
     answers = params.require(:answers).as_json
 
-    game = GekanatorGame.create!(
+    game = GekanatorGame.new(
         user: current_user,
-        guessed_post_id: params.require(:guessed_post_id),
-        correct_post_id: params[:correct_post_id].presence,
-        won: params[:guessed_post_id].to_i == params[:correct_post_id].to_i,
+        guessed_post_id:,
+        correct_post_id:,
+        won: correct_post_id.present? && guessed_post_id.to_i == correct_post_id.to_i,
         question_count: params.require(:question_count),
         answers:)
 
-    render json: { id: game.id }, status: :created
+    if game.save
+      render json: { id: game.id }, status: :created
+    else
+      render json: { errors: game.errors.full_messages }, status: :unprocessable_entity
+    end
   end
 end