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Phoenix & Ember Living Together Mass Hysteria!

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@bcardarella

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@DockYard

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I run… Boston Elixir Boston Ember

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I run… Boston.ex Boston Ember

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I’m here to talk about Modern Full Stack Application Development

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I’m here to talk about Modern Full Stack Application Development

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The way it used to be

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The way it used to be

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The way it used to be

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The way it used to be

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The way it used to be

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The way it used to be

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The way it used to be

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The way it used to be

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The way it used to be

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This talk isn’t client-side framework specific

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This talk isn’t client-side framework specific (mostly)

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This talk is about two apps

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priv !"" static #"" css $ #"" app.css $ !"" app.css.map #"" images $ #"" favicon.ico $ !"" phoenix.png #"" js $ #"" app.js $ !"" app.js.map !"" robots.txt

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priv !"" static #"" css $ #"" app.css $ !"" app.css.map #"" images $ #"" favicon.ico $ !"" phoenix.png #"" js $ #"" app.js $ !"" app.js.map !"" robots.txt

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backend/ frontend/ foo-app/

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foo-app-backend/ foo-app-frontend/ Two separate repos

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ember serve —proxy http://localhost:4000

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ember serve —proxy http://localhost:4000 requests to /api/*

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ember serve —proxy http://localhost:4000 requests to /api/* data!

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ember serve —proxy http://localhost:4000 response back data!

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Talking with

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* standardized schema for JSON based APIs * is very verbose * requires special MIME type

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requires special MIME type application/vnd.api+json

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defmodule MyApp.Router do scope “/api” MyApp do resources “/accounts”, AccountsController end end

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defmodule MyApp.Router do pipeline :api do accepts, [“json-api”] end scope “/api” MyApp do pipe_through :api resources “/accounts”, AccountsController end end

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Copied from plug’s documentation # https://github.com/elixir-lang/plug/tree/master/lib/plug/mime.ex Maps MIME types to file extensions and vice versa. MIME types can be extended in your application configuration as follows: config :plug, :mimes, %{ "application/vnd.api+json" => ["json-api"] } After adding the configuration, Plug needs to be recompiled. If you are using mix, it can be done with: $ touch deps/plug/mix.exs $ mix deps.compile plug

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Copied from plug’s documentation # config/config.exs config :plug, :mimes, %{ "application/vnd.api+json" => ["json-api"] } Add the MIME type to your Phoenix config

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Copied from plug’s documentation $ touch deps/plug/mix.exs $ mix deps.compile plug Force plug to recompile

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{ "data": { "type": "authors", "attributes": { "first-name": "Brian", "last-name": "Cardarella" } } }

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{ "data": { "type": "authors", "attributes": { "first-name": "Brian", "last-name": "Cardarella" } } }

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{ "data": { "type": "authors", "attributes": { "first-name": "Brian", "last-name": "Cardarella" } } } Deserialize into snake case

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defmodule MyApp.Deserialize do def init(options) do options end def call(%Plug.Conn{method: "POST"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PUT"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PATCH"}=conn, _opts) do _deserialize(conn) end def call(conn, _opts), do: conn defp _deserialize(%Plug.Conn{}=conn) do Map.put(conn, :params, _deserialize(conn.params)) end defp _deserialize(%{}=params) do Enum.into(params, %{}, fn({key, value}) -> { _underscore(key), _deserialize(value) } end) end defp _deserialize(value), do: value defp _underscore(key), do: String.replace(key, "-", "_") end

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defmodule MyApp.Deserialize do def init(options) do options end def call(%Plug.Conn{method: "POST"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PUT"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PATCH"}=conn, _opts) do _deserialize(conn) end def call(conn, _opts), do: conn defp _deserialize(%Plug.Conn{}=conn) do Map.put(conn, :params, _deserialize(conn.params)) end defp _deserialize(%{}=params) do Enum.into(params, %{}, fn({key, value}) -> { _underscore(key), _deserialize(value) } end) end defp _deserialize(value), do: value defp _underscore(key), do: String.replace(key, "-", "_") end

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defmodule MyApp.Deserialize do def init(options) do options end def call(%Plug.Conn{method: "POST"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PUT"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PATCH"}=conn, _opts) do _deserialize(conn) end def call(conn, _opts), do: conn defp _deserialize(%Plug.Conn{}=conn) do Map.put(conn, :params, _deserialize(conn.params)) end defp _deserialize(%{}=params) do Enum.into(params, %{}, fn({key, value}) -> { _underscore(key), _deserialize(value) } end) end defp _deserialize(value), do: value defp _underscore(key), do: String.replace(key, "-", "_") end

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defmodule MyApp.Deserialize do def init(options) do options end def call(%Plug.Conn{method: "POST"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PUT"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PATCH"}=conn, _opts) do _deserialize(conn) end def call(conn, _opts), do: conn defp _deserialize(%Plug.Conn{}=conn) do Map.put(conn, :params, _deserialize(conn.params)) end defp _deserialize(%{}=params) do Enum.into(params, %{}, fn({key, value}) -> { _underscore(key), _deserialize(value) } end) end defp _deserialize(value), do: value defp _underscore(key), do: String.replace(key, "-", "_") end

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defmodule MyApp.Deserialize do def init(options) do options end def call(%Plug.Conn{method: "POST"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PUT"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PATCH"}=conn, _opts) do _deserialize(conn) end def call(conn, _opts), do: conn defp _deserialize(%Plug.Conn{}=conn) do Map.put(conn, :params, _deserialize(conn.params)) end defp _deserialize(%{}=params) do Enum.into(params, %{}, fn({key, value}) -> { _underscore(key), _deserialize(value) } end) end defp _deserialize(value), do: value defp _underscore(key), do: String.replace(key, "-", "_") end

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defmodule MyApp.Deserialize do def init(options) do options end def call(%Plug.Conn{method: "POST"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PUT"}=conn, _opts) do _deserialize(conn) end def call(%Plug.Conn{method: "PATCH"}=conn, _opts) do _deserialize(conn) end def call(conn, _opts), do: conn defp _deserialize(%Plug.Conn{}=conn) do Map.put(conn, :params, _deserialize(conn.params)) end defp _deserialize(%{}=params) do Enum.into(params, %{}, fn({key, value}) -> { _underscore(key), _deserialize(value) } end) end defp _deserialize(value), do: value defp _underscore(key), do: String.replace(key, "-", "_") end

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defmodule MyApp.Router do pipeline :api do accepts, [“json-api”] end scope “/api” MyApp do pipe_through :api resources “/accounts”, AccountsController end end

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defmodule MyApp.Router do pipeline :api do accepts, [“json-api”] plug MyApp.Deserialize end scope “/api” MyApp do pipe_through :api resources “/accounts”, AccountsController end end

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%{ “data" => %{ “type" => "authors", “attributes" => %{ “first_name” => "Brian", “last_name” => "Cardarella" } } }

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Actions

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Actions def create(conn, params)

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%{ “data" => %{ “type" => "authors", “attributes" => %{ “first_name” => "Brian", “last_name” => "Cardarella" } } }

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%{ “data" => %{ “type" => "authors", “attributes" => %{ “first_name” => "Brian", “last_name” => "Cardarella" } } }

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%{ “data" => %{ “type" => "authors", “attributes" => %{ “first_name” => "Brian", “last_name” => "Cardarella" } } }

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Actions def create(conn, %{“data” => %{“attributes” => data, “type” => “authors”}})

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Actions def create(conn, %{“data” => %{“attributes” => data, “type” => “authors”}})

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Actions def create(conn, %{“data” => %{“attributes” => data, “type” => “authors”}}) def post(conn, %{“data” => %{“attributes” => data, “type” => “authors”}}) def put(conn, %{“data” => %{“attributes” => data, “type” => “authors”}})

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Actions def create(conn, %{“data” => %{“attributes” => data, “type” => “authors”}}) def post(conn, %{“data” => %{“attributes” => data, “type” => “authors”}}) def put(conn, %{“data” => %{“attributes” => data, “type” => “authors”}})

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Actions def create(conn, %{“data” => %{“attributes” => data, “type” => “authors”}}) def post(conn, %{“data” => %{“attributes” => data, “type” => “authors”}}) def put(conn, %{“data” => %{“attributes” => data, “type” => “authors”}}) def delete(conn, %{“id” => id}) def show(conn, %{“id” => id}) def index(conn, _params)

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Actions def show(conn, %{“id” => id}) do author = MyApp.Repo.get!(MyApp.Author, id) render conn, model: author end

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View defmodule MyApp.AuthorsView do use PhoenixExample.Web, :view use JaSerializer.PhoenixView attributes [:first_name, :last_name] end web/views/authors_view.ex

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View defmodule MyApp.AuthorsView do use PhoenixExample.Web, :view use JaSerializer.PhoenixView attributes [:first_name, :last_name] end web/views/authors_view.ex

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View defmodule MyApp.AuthorsView do use PhoenixExample.Web, :view use JaSerializer.PhoenixView attributes [:first_name, :last_name] end web/views/authors_view.ex https://github.com/AgilionApps/ja_serializer

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data! requests to /api/* response back

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requests to /api/* response back Thanks brah!

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requests to /api/* response back No problemo!

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testing

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Test each part in isolation

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Test each part in isolation Test the complete system

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Unit Tests Integration Tests

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API Unit Tests test !"" api

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API Unit Tests test "`create` insert into the database and return payload" do count = MyApp.Repo.all(MyApp.Author) |> length post(conn, authors_path(conn, :create), json_for(:author, @author)) |> json_response(201) |> assert_payload_contains(%{ "authors": %{attributes: %{first-name: "Gizmo"}} }) assert count + 1 == MyApp.Repo.all(MyApp.Author) |> length end

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API Unit Tests test "`create` insert into the database and return payload" do count = MyApp.Repo.all(MyApp.Author) |> length post(conn, authors_path(conn, :create), json_for(:author, @author)) |> json_response(201) |> assert_payload_contains(%{ "authors": %{attributes: %{first-name: "Gizmo"}} }) assert count + 1 == MyApp.Repo.all(MyApp.Author) |> length end

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%{ “data" => %{ “type" => "authors", “attributes" => %{ “first_name” => "Brian", “last_name” => "Cardarella" } } }

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def json_for(type, attributes) do %{ "data" => %{ "type" => Atom.to_string(type) |> String.replace("_", "-"), "attributes" => attributes }, "format" => "json-api" } end def json_for(type, attributes, id) do json = json_for(type, attributes) put_in json["data"]["id"], id end

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def json_for(type, attributes) do %{ "data" => %{ "type" => Atom.to_string(type) |> String.replace("_", "-"), "attributes" => attributes }, "format" => "json-api" } end def json_for(type, attributes, id) do json = json_for(type, attributes) put_in json["data"]["id"], id end

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API Unit Tests test "`create` insert into the database and return payload" do count = MyApp.Repo.all(MyApp.Author) |> length post(conn, authors_path(conn, :create), json_for(:author, @author)) |> json_response(201) |> assert_payload_contains(%{ "authors": %{attributes: %{first-name: "Gizmo"}} }) assert count + 1 == MyApp.Repo.all(MyApp.Author) |> length end https://github.com/danmcclain/voorhees

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API Unit Tests test "`show` an author" do %{authors: %{one: author}} = fixtures(:authors) get(conn, authors_path(conn, :show, author.id)) |> json_response(200) |> assert_payload_contains(%{ "authors": %{attributes: %{first-name: "Brian"}} }) end

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API Unit Tests test "`show` an author" do %{authors: %{one: author}} = fixtures(:authors) get(conn, authors_path(conn, :show, author.id)) |> json_response(200) |> assert_payload_contains(%{ "authors": %{attributes: %{first-name: "Brian"}} }) end https://github.com/dockyard/ecto_fixtures

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authors model: MyApp.Author, repo: MyApp.Repo do valid do first_name "George" last_name "Washington" email "test@example.com" date_of_birth Ecto.Date.from_erl({1990,1,1}) password_hash Comeonin.Bcrypt.hashpwsalt("password") end one inherits: valid do id 1 email "one@example.com" first_name "Leroy" last_name "Jenkins" end end test/fixtures/authors.exs

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API Unit Tests

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Integration Tests

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Setting Up Data Per Test if Mix.env == :test do post "/fixtures/start", FixturesController, :start post "/fixtures", FixturesController, :create end

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Setting Up Data Per Test defmodule MyApp.FixturesController do use MyApp.Web, :controller import EctoFixtures, only: [fixtures: 1] def start(conn, _params) do Ecto.Adapters.SQL.begin_test_transaction(MyApp.Repo) send_resp(conn, 200, "") end def create(conn, %{"fixtures" => fixtures}) do Ecto.Adapters.SQL.restart_test_transaction(MyApp.Repo) Poison.decode!(fixtures) |> Enum.each(fn(name) -> fixtures(name) end) send_resp(conn, 200, "") end end

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Setting Up Data Per Test defmodule MyApp.FixturesController do use MyApp.Web, :controller import EctoFixtures, only: [fixtures: 1] def start(conn, _params) do Ecto.Adapters.SQL.begin_test_transaction(MyApp.Repo) send_resp(conn, 200, "") end def create(conn, %{"fixtures" => fixtures}) do Ecto.Adapters.SQL.restart_test_transaction(MyApp.Repo) Poison.decode!(fixtures) |> Enum.each(fn(name) -> fixtures(name) end) send_resp(conn, 200, "") end end

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Setting Up Data Per Test defmodule MyApp.FixturesController do use MyApp.Web, :controller import EctoFixtures, only: [fixtures: 1] def start(conn, _params) do Ecto.Adapters.SQL.begin_test_transaction(MyApp.Repo) send_resp(conn, 200, "") end def create(conn, %{"fixtures" => fixtures}) do Ecto.Adapters.SQL.restart_test_transaction(MyApp.Repo) Poison.decode!(fixtures) |> Enum.each(fn(name) -> fixtures(name) end) send_resp(conn, 200, "") end end

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Setting Up Data Per Test defmodule MyApp.FixturesController do use MyApp.Web, :controller import EctoFixtures, only: [fixtures: 1] def start(conn, _params) do Ecto.Adapters.SQL.begin_test_transaction(MyApp.Repo) send_resp(conn, 200, "") end def create(conn, %{"fixtures" => fixtures}) do Ecto.Adapters.SQL.restart_test_transaction(MyApp.Repo) Poison.decode!(fixtures) |> Enum.each(fn(name) -> fixtures(name) end) send_resp(conn, 200, "") end end

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Setting Up Data Per Test defmodule MyApp.FixturesController do use MyApp.Web, :controller import EctoFixtures, only: [fixtures: 1] def start(conn, _params) do Ecto.Adapters.SQL.begin_test_transaction(MyApp.Repo) send_resp(conn, 200, "") end def create(conn, %{"fixtures" => fixtures}) do Ecto.Adapters.SQL.restart_test_transaction(MyApp.Repo) Poison.decode!(fixtures) |> Enum.each(fn(name) -> fixtures(name) end) send_resp(conn, 200, "") end end test/support/fixtures_controller.ex

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Calling the fixtures in your Ember Test Suite module(“my awesome test module”, { setup() { Ember.$.post(“api/fixtures/start”, { async: false }); } });

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Calling the fixtures in your Ember Test Suite module(“my awesome test module”, { setup() { Ember.$.post(“api/fixtures/start”, { async: false }); } });

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Calling the fixtures in your Ember Test Suite test(“my awesome test”, function(assert) { Ember.$.post(“api/fixtures”, { data: { fixtures: [“foo”, “bar”] }, async: false }); });

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Calling the fixtures in your Ember Test Suite test(“my awesome test”, function(assert) { Ember.$.post(“api/fixtures”, { data: { fixtures: [“foo”, “bar”] }, async: false }); });

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Calling the fixtures in your Ember Test Suite test(“my awesome test”, function(assert) { Ember.$.post(“api/fixtures”, { data: { fixtures: [“foo”, “bar”] }, async: false }); });

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Other Topics Not Covered * Running with CI * Speeding up test suite * Deployment * Testing Email via Ember (that I will briefly cover right now)

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Thank you!

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Talk to us about Phoenix and/or Ember development! @dockyard dockyard.com/contact