Games are now associated to a user

lib/chess/auth/user.ex

@@ -10,6 +10,8 @@ defmodule Chess.Auth.User do
     field :password_hash, :string
     field :username, :string
 
+    has_many :games, Chess.Store.Game
+
     timestamps()
   end
 

lib/chess/store/game.ex

@@ -5,35 +5,39 @@ defmodule Chess.Store.Game do
   import Ecto.Changeset
   import Ecto.Query
 
+  alias Chess.Board
+
   schema "games" do
     field :board, :map
 
+    belongs_to :user, Chess.Auth.User
+
     timestamps()
   end
 
   @doc """
   Builds a changeset based on the `struct` and `params`.
   """
-  def changeset(struct) do
+  def create_changeset(struct, params \\ %{}) do
     struct
-    |> cast(%{}, [:board])
-    |> set_default_board
-    |> validate_required([:board])
+    |> cast(params, [:board, :user_id])
+    |> put_change(:board, Board.default)
+    |> validate_required([:board, :user_id])
   end
 
-  def changeset(struct, params) do
+  def changeset(struct, params \\ %{}) do
     struct
-    |> cast(params, [:board])
-    |> validate_required([:board])
+    |> cast(params, [:board, :user_id])
+    |> validate_required([:board, :user_id])
+  end
+
+  def for_user(query, user) do
+    query
+    |> where([game], user_id: ^user.id)
   end
 
   def ordered(query) do
     query
     |> order_by([game], desc: game.inserted_at)
   end
-
-  def set_default_board(changeset) do
-    changeset
-    |> put_change(:board, Chess.Board.default)
-  end
 end

lib/chess_web/controllers/game_controller.ex

@@ -5,12 +5,18 @@ defmodule ChessWeb.GameController do
 
   def index(conn, _params) do
     changeset = Game.changeset(%Game{})
-    games = Game |> Game.ordered |> Repo.all
+    games = Game
+            |> Game.for_user(current_user(conn))
+            |> Game.ordered
+            |> Repo.all
     render(conn, "index.html", games: games, changeset: changeset)
   end
 
   def create(conn, _params) do
-    changeset = Game.changeset(%Game{})
+    changeset = Game.create_changeset(
+      %Game{},
+      %{user_id: current_user(conn).id}
+    )
 
     case Repo.insert(changeset) do
       {:ok, game} ->
@@ -38,4 +44,8 @@ defmodule ChessWeb.GameController do
     |> put_flash(:info, "Game deleted successfully.")
     |> redirect(to: game_path(conn, :index))
   end
+
+  defp current_user(conn) do
+    Guardian.Plug.current_resource(conn)
+  end
 end

priv/repo/migrations/20180202205842_add_user_id_to_games.exs

@@ -0,0 +1,9 @@
+defmodule Chess.Repo.Migrations.AddUserIdToGames do
+  use Ecto.Migration
+
+  def change do
+    alter table("games") do
+      add :user_id, references(:users)
+    end
+  end
+end

test/chess/store/game_test.exs

@@ -4,16 +4,30 @@ defmodule Chess.GameTest do
   describe "game" do
     alias Chess.Store.Game
 
-    @valid_attrs %{board: %{}}
-    @invalid_attrs %{}
+    test "game is valid with a board and user" do
+      attrs = %{board: %{}, user_id: 1}
+      changeset = Game.changeset(%Game{}, attrs)
 
-    test "changeset with valid attributes" do
-      changeset = Game.changeset(%Game{}, @valid_attrs)
       assert changeset.valid?
     end
 
-    test "changeset with invalid attributes" do
-      changeset = Game.changeset(%Game{}, @invalid_attrs)
+    test "game is invalid without a board" do
+      attrs = %{user_id: 1}
+      changeset = Game.changeset(%Game{}, attrs)
+
+      refute changeset.valid?
+    end
+
+    test "game is invalid without a user" do
+      attrs = %{board: %{}}
+      changeset = Game.changeset(%Game{}, attrs)
+
+      refute changeset.valid?
+    end
+
+    test "game is invalid without a board or user" do
+      changeset = Game.changeset(%Game{}, %{})
+
       refute changeset.valid?
     end
   end

test/features/games_test.exs

@@ -1,8 +1,14 @@
 defmodule Chess.GamesTest do
   use ChessWeb.FeatureCase
 
-  import Wallaby.Query, only: [css: 1, css: 2, button: 1, text_field: 1]
-  import Chess.Factory, only: [create_user: 2]
+  import Wallaby.Query, only: [
+    css: 1,
+    css: 2,
+    button: 1,
+    text_field: 1,
+    link: 1,
+  ]
+  import Chess.Factory, only: [create_user: 2, create_game_for: 1]
 
   test "visit homepage", %{session: session} do
     session
@@ -13,11 +19,21 @@ defmodule Chess.GamesTest do
   test "can create a new game", %{session: session} do
     session
     |> login()
-    |> take_screenshot()
     |> create_game()
     |> assert_has(css(".board"))
   end
 
+  test "can only see own games", %{session: session} do
+    user = create_user("zelda@hyrule.kingdom", "ganonsucks")
+    create_game_for(user)
+
+    session
+    |> login()
+    |> create_game()
+    |> click(link("Back to games"))
+    |> assert_has(css(".table tr", count: 1))
+  end
+
   test "can move a piece", %{session: session} do
     session
     |> login()

test/support/factory.ex

@@ -1,5 +1,6 @@
 defmodule Chess.Factory do
   alias Chess.Auth.User
+  alias Chess.Store.Game
   alias Chess.Repo
 
   def create_user(username \\ "zelda", password \\ "password") do
@@ -9,4 +10,12 @@ defmodule Chess.Factory do
     )
     |> Repo.insert!
   end
+
+  def create_game_for(user) do
+    Game.create_changeset(
+      %Game{},
+      %{user_id: user.id}
+    )
+    |> Repo.insert!
+  end
 end

test/test_helper.exs

@@ -2,6 +2,6 @@
 
 ExUnit.start()
 
-Ecto.Adapters.SQL.Sandbox.mode(Chess.Repo, :manual)
+Ecto.Adapters.SQL.Sandbox.mode(Chess.Repo, {:shared, self()})
 
 Application.put_env(:wallaby, :base_url, ChessWeb.Endpoint.url)