added inbox model

app/models/inbox.rb

@@ -0,0 +1,4 @@
+class Inbox < ActiveRecord::Base
+  belongs_to :user
+  has_one :question
+end

app/models/user.rb

@@ -10,6 +10,7 @@ class User < ActiveRecord::Base
   has_many :questions, dependent: :destroy
   has_many :answers, dependent: :destroy
   has_many :comments, dependent: :destroy
+  has_many :inboxes, dependent: :destroy
   
   SCREEN_NAME_REGEX = /\A[a-zA-Z0-9_]{1,16}\z/
   

db/migrate/20141110210154_create_inboxes.rb

@@ -0,0 +1,11 @@
+class CreateInboxes < ActiveRecord::Migration
+  def change
+    create_table :inboxes do |t|
+      t.integer :user_id
+      t.integer :question_id
+      t.boolean :new
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20141104143648) do
+ActiveRecord::Schema.define(version: 20141110210154) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -38,6 +38,14 @@ ActiveRecord::Schema.define(version: 20141104143648) do
 
   add_index "comments", ["user_id", "created_at"], name: "index_comments_on_user_id_and_created_at", using: :btree
 
+  create_table "inboxes", force: true do |t|
+    t.integer  "user_id"
+    t.integer  "question_id"
+    t.boolean  "new"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
   create_table "questions", force: true do |t|
     t.string   "content"
     t.boolean  "author_is_anonymous"

test/fixtures/inboxes.yml

@@ -0,0 +1,9 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  user_id: 1
+  question_id: 1
+
+two:
+  user_id: 1
+  question_id: 1

test/models/inbox_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class InboxTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end