Added user_book model

lib/amnesia_api/amnesia/amnesia.ex

@@ -965,4 +965,100 @@ defmodule AmnesiaApi.Amnesia do
   def change_section_questions(%SectionQuestions{} = section_questions) do
     SectionQuestions.changeset(section_questions, %{})
   end
+
+  alias AmnesiaApi.Amnesia.UserBook
+
+  @doc """
+  Returns the list of user_books.
+
+  ## Examples
+
+      iex> list_user_books()
+      [%UserBook{}, ...]
+
+  """
+  def list_user_books do
+    Repo.all(UserBook)
+  end
+
+  @doc """
+  Gets a single user_book.
+
+  Raises `Ecto.NoResultsError` if the User book does not exist.
+
+  ## Examples
+
+      iex> get_user_book!(123)
+      %UserBook{}
+
+      iex> get_user_book!(456)
+      ** (Ecto.NoResultsError)
+
+  """
+  def get_user_book!(id), do: Repo.get!(UserBook, id)
+
+  @doc """
+  Creates a user_book.
+
+  ## Examples
+
+      iex> create_user_book(%{field: value})
+      {:ok, %UserBook{}}
+
+      iex> create_user_book(%{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def create_user_book(attrs \\ %{}) do
+    %UserBook{}
+    |> UserBook.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates a user_book.
+
+  ## Examples
+
+      iex> update_user_book(user_book, %{field: new_value})
+      {:ok, %UserBook{}}
+
+      iex> update_user_book(user_book, %{field: bad_value})
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def update_user_book(%UserBook{} = user_book, attrs) do
+    user_book
+    |> UserBook.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes a UserBook.
+
+  ## Examples
+
+      iex> delete_user_book(user_book)
+      {:ok, %UserBook{}}
+
+      iex> delete_user_book(user_book)
+      {:error, %Ecto.Changeset{}}
+
+  """
+  def delete_user_book(%UserBook{} = user_book) do
+    Repo.delete(user_book)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking user_book changes.
+
+  ## Examples
+
+      iex> change_user_book(user_book)
+      %Ecto.Changeset{source: %UserBook{}}
+
+  """
+  def change_user_book(%UserBook{} = user_book) do
+    UserBook.changeset(user_book, %{})
+  end
 end

lib/amnesia_api/amnesia/user_book.ex

@@ -0,0 +1,20 @@
+defmodule AmnesiaApi.Amnesia.UserBook do
+  use Ecto.Schema
+  import Ecto.Changeset
+  alias AmnesiaApi.Amnesia.UserBook
+
+
+  schema "user_books" do
+    field :user_id, :id
+    field :book_id, :id
+
+    timestamps()
+  end
+
+  @doc false
+  def changeset(%UserBook{} = user_book, attrs) do
+    user_book
+    |> cast(attrs, [])
+    |> validate_required([])
+  end
+end

lib/amnesia_api_web/controllers/user_book_controller.ex

@@ -0,0 +1,51 @@
+defmodule AmnesiaApiWeb.UserBookController do
+  use AmnesiaApiWeb, :controller
+
+  alias AmnesiaApi.Amnesia
+  alias AmnesiaApi.Amnesia.UserBook
+  alias AmnesiaApi.Repo
+
+  action_fallback AmnesiaApiWeb.FallbackController
+
+  def index(conn, _params) do
+    user_books = Amnesia.list_user_books()
+    render(conn, "index.json", user_books: user_books)
+  end
+
+  def create(conn, %{"user_book" => %{"user_id" => user_id, "book_id" => book_id}}) do
+    user_book = Repo.get_by(UserBook, [book_id: book_id, user_id: user_id])
+    if user_book != nil do
+      conn 
+      |> put_status(:created)
+      |> put_resp_header("location", user_book_path(conn, :show, user_book))
+      |> render("show.json", user_book: user_book)
+    else
+      with {:ok, %UserBook{} = user_book} <- Amnesia.create_user_book(user_book_params) do
+        conn
+        |> put_status(:created)
+        |> put_resp_header("location", user_book_path(conn, :show, user_book))
+        |> render("show.json", user_book: user_book)
+      end
+    end
+  end
+
+  def show(conn, %{"id" => id}) do
+    user_book = Amnesia.get_user_book!(id)
+    render(conn, "show.json", user_book: user_book)
+  end
+
+  def update(conn, %{"id" => id, "user_book" => user_book_params}) do
+    user_book = Amnesia.get_user_book!(id)
+
+    with {:ok, %UserBook{} = user_book} <- Amnesia.update_user_book(user_book, user_book_params) do
+      render(conn, "show.json", user_book: user_book)
+    end
+  end
+
+  def delete(conn, %{"id" => id}) do
+    user_book = Amnesia.get_user_book!(id)
+    with {:ok, %UserBook{}} <- Amnesia.delete_user_book(user_book) do
+      send_resp(conn, :no_content, "")
+    end
+  end
+end

lib/amnesia_api_web/router.ex

@@ -25,6 +25,7 @@ defmodule AmnesiaApiWeb.Router do
     resources "/users", UserController
     post "/users/login", UserController, :login
     resources "/books", BookController
+    resources "/user_books", UserBookController
     resources "/authors", AuthorController
     resources "/questions", QuestionController
     resources "/answers", AnswerController

lib/amnesia_api_web/views/user_book_view.ex

@@ -0,0 +1,16 @@
+defmodule AmnesiaApiWeb.UserBookView do
+  use AmnesiaApiWeb, :view
+  alias AmnesiaApiWeb.UserBookView
+
+  def render("index.json", %{user_books: user_books}) do
+    %{data: render_many(user_books, UserBookView, "user_book.json")}
+  end
+
+  def render("show.json", %{user_book: user_book}) do
+    %{data: render_one(user_book, UserBookView, "user_book.json")}
+  end
+
+  def render("user_book.json", %{user_book: user_book}) do
+    %{id: user_book.id}
+  end
+end

priv/repo/migrations/20170821171719_create_user_book.exs

@@ -0,0 +1,15 @@
+defmodule AmnesiaApi.Repo.Migrations.CreateUserBook do
+  use Ecto.Migration
+
+  def change do
+    create table(:user_books) do
+      add :user_id, references(:users, on_delete: :nothing)
+      add :book_id, references(:books, on_delete: :nothing)
+
+      timestamps()
+    end
+
+    create index(:user_books, [:user_id])
+    create index(:user_books, [:book_id])
+  end
+end

priv/repo/migrations/20170821172007_create_user_books.exs

@@ -0,0 +1,15 @@
+defmodule AmnesiaApi.Repo.Migrations.CreateUserBooks do
+  use Ecto.Migration
+
+  def change do
+    create table(:user_books) do
+      add :user_id, references(:users, on_delete: :nothing)
+      add :book_id, references(:books, on_delete: :nothing)
+
+      timestamps()
+    end
+
+    create index(:user_books, [:user_id])
+    create index(:user_books, [:book_id])
+  end
+end

test/amnesia_api/amnesia/amnesia_test.exs

@@ -602,4 +602,62 @@ defmodule AmnesiaApi.AmnesiaTest do
       assert %Ecto.Changeset{} = Amnesia.change_section_questions(section_questions)
     end
   end
+
+  describe "user_books" do
+    alias AmnesiaApi.Amnesia.UserBook
+
+    @valid_attrs %{}
+    @update_attrs %{}
+    @invalid_attrs %{}
+
+    def user_book_fixture(attrs \\ %{}) do
+      {:ok, user_book} =
+        attrs
+        |> Enum.into(@valid_attrs)
+        |> Amnesia.create_user_book()
+
+      user_book
+    end
+
+    test "list_user_books/0 returns all user_books" do
+      user_book = user_book_fixture()
+      assert Amnesia.list_user_books() == [user_book]
+    end
+
+    test "get_user_book!/1 returns the user_book with given id" do
+      user_book = user_book_fixture()
+      assert Amnesia.get_user_book!(user_book.id) == user_book
+    end
+
+    test "create_user_book/1 with valid data creates a user_book" do
+      assert {:ok, %UserBook{} = user_book} = Amnesia.create_user_book(@valid_attrs)
+    end
+
+    test "create_user_book/1 with invalid data returns error changeset" do
+      assert {:error, %Ecto.Changeset{}} = Amnesia.create_user_book(@invalid_attrs)
+    end
+
+    test "update_user_book/2 with valid data updates the user_book" do
+      user_book = user_book_fixture()
+      assert {:ok, user_book} = Amnesia.update_user_book(user_book, @update_attrs)
+      assert %UserBook{} = user_book
+    end
+
+    test "update_user_book/2 with invalid data returns error changeset" do
+      user_book = user_book_fixture()
+      assert {:error, %Ecto.Changeset{}} = Amnesia.update_user_book(user_book, @invalid_attrs)
+      assert user_book == Amnesia.get_user_book!(user_book.id)
+    end
+
+    test "delete_user_book/1 deletes the user_book" do
+      user_book = user_book_fixture()
+      assert {:ok, %UserBook{}} = Amnesia.delete_user_book(user_book)
+      assert_raise Ecto.NoResultsError, fn -> Amnesia.get_user_book!(user_book.id) end
+    end
+
+    test "change_user_book/1 returns a user_book changeset" do
+      user_book = user_book_fixture()
+      assert %Ecto.Changeset{} = Amnesia.change_user_book(user_book)
+    end
+  end
 end

test/amnesia_api_web/controllers/user_book_controller_test.exs

@@ -0,0 +1,77 @@
+defmodule AmnesiaApiWeb.UserBookControllerTest do
+  use AmnesiaApiWeb.ConnCase
+
+  alias AmnesiaApi.Amnesia
+  alias AmnesiaApi.Amnesia.UserBook
+
+  @create_attrs %{}
+  @update_attrs %{}
+  @invalid_attrs %{}
+
+  def fixture(:user_book) do
+    {:ok, user_book} = Amnesia.create_user_book(@create_attrs)
+    user_book
+  end
+
+  setup %{conn: conn} do
+    {:ok, conn: put_req_header(conn, "accept", "application/json")}
+  end
+
+  describe "index" do
+    test "lists all user_books", %{conn: conn} do
+      conn = get conn, user_book_path(conn, :index)
+      assert json_response(conn, 200)["data"] == []
+    end
+  end
+
+  describe "create user_book" do
+    test "renders user_book when data is valid", %{conn: conn} do
+      conn = post conn, user_book_path(conn, :create), user_book: @create_attrs
+      assert %{"id" => id} = json_response(conn, 201)["data"]
+
+      conn = get conn, user_book_path(conn, :show, id)
+      assert json_response(conn, 200)["data"] == %{
+        "id" => id}
+    end
+
+    test "renders errors when data is invalid", %{conn: conn} do
+      conn = post conn, user_book_path(conn, :create), user_book: @invalid_attrs
+      assert json_response(conn, 422)["errors"] != %{}
+    end
+  end
+
+  describe "update user_book" do
+    setup [:create_user_book]
+
+    test "renders user_book when data is valid", %{conn: conn, user_book: %UserBook{id: id} = user_book} do
+      conn = put conn, user_book_path(conn, :update, user_book), user_book: @update_attrs
+      assert %{"id" => ^id} = json_response(conn, 200)["data"]
+
+      conn = get conn, user_book_path(conn, :show, id)
+      assert json_response(conn, 200)["data"] == %{
+        "id" => id}
+    end
+
+    test "renders errors when data is invalid", %{conn: conn, user_book: user_book} do
+      conn = put conn, user_book_path(conn, :update, user_book), user_book: @invalid_attrs
+      assert json_response(conn, 422)["errors"] != %{}
+    end
+  end
+
+  describe "delete user_book" do
+    setup [:create_user_book]
+
+    test "deletes chosen user_book", %{conn: conn, user_book: user_book} do
+      conn = delete conn, user_book_path(conn, :delete, user_book)
+      assert response(conn, 204)
+      assert_error_sent 404, fn ->
+        get conn, user_book_path(conn, :show, user_book)
+      end
+    end
+  end
+
+  defp create_user_book(_) do
+    user_book = fixture(:user_book)
+    {:ok, user_book: user_book}
+  end
+end