创建答题选项

app/models/challenge_question.rb

@@ -0,0 +1,3 @@
+class ChallengeQuestion < ActiveRecord::Base
+  attr_accessible :challenge_id, :option, :position, :right_key
+end

db/migrate/20170721060845_create_challenge_questions.rb

@@ -0,0 +1,12 @@
+class CreateChallengeQuestions < ActiveRecord::Migration
+  def change
+    create_table :challenge_questions do |t|
+      t.text :option_name
+      t.integer :challenge_id
+      t.boolean :right_key
+      t.integer :position, :limit => 1
+
+      t.timestamps
+    end
+  end
+end