実行されたコードを保存できるようにした

app/controllers/api/api_controller.rb

@@ -1,2 +1 @@
-class Api::ApiController < ApplicationController
-end
+class Api::ApiController < ApplicationController; end

app/controllers/api/v1/compile_controller.rb

@@ -8,6 +8,13 @@ def exec
     input = params[:input]
     compiler = CodeCandy::Compiler.new
 
+    # 提出されたコードを保存
+    Code.create(
+      code: source_code,
+      language: language,
+      user_id: current_user.id
+    )
+
     result = compiler.exec(language, source_code, input)
 
     result[:stdout] = result[:stdout].force_encoding("UTF-8")

app/controllers/api/v1/judgement_controller.rb

@@ -10,6 +10,13 @@ def exec
     source_code = params[:source_code]
     id = params[:answer_id]
 
+    # 提出されたコードを保存
+    Code.create(
+      code: source_code,
+      language: language,
+      user_id: current_user.id
+    )
+
     judgement = CodeCandy::Judgement.new(language, source_code, id, current_user)
     result = judgement.exec
 

db/migrate/20180929180448_create_codes.rb

@@ -1,7 +1,7 @@
 class CreateCodes < ActiveRecord::Migration[5.1]
   def change
     create_table :codes do |t|
-      t.integer :user_id, null: false
+      t.integer :user_id
       t.text :code
       t.string :language
 

db/schema.rb

@@ -40,7 +40,7 @@
   end
 
   create_table "codes", force: :cascade do |t|
-    t.integer "user_id", null: false
+    t.integer "user_id"
     t.text "code"
     t.string "language"
     t.datetime "created_at", null: false