first commit of elixir proj

.gitignore

@@ -0,0 +1,27 @@
+# App artifacts
+/_build
+/db
+/deps
+/*.ez
+
+# Generated on crash by the VM
+erl_crash.dump
+
+# Generated on crash by NPM
+npm-debug.log
+
+# Static artifacts
+/assets/node_modules
+
+# Since we are building assets from assets/,
+# we ignore priv/static. You may want to comment
+# this depending on your deployment strategy.
+/priv/static/
+
+# Files matching config/*.secret.exs pattern contain sensitive
+# data and you should not commit them into version control.
+#
+# Alternatively, you may comment the line below and commit the
+# secrets files as long as you replace their contents by environment
+# variables.
+/config/*.secret.exs

README.md

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+# Forum
+
+To start your Phoenix server:
+
+  * Install dependencies with `mix deps.get`
+  * Create and migrate your database with `mix ecto.create && mix ecto.migrate`
+  * Install Node.js dependencies with `cd assets && npm install`
+  * Start Phoenix endpoint with `mix phx.server`
+
+Now you can visit [`localhost:4000`](http://localhost:4000) from your browser.
+
+Ready to run in production? Please [check our deployment guides](http://www.phoenixframework.org/docs/deployment).
+
+## Learn more
+
+  * Official website: http://www.phoenixframework.org/
+  * Guides: http://phoenixframework.org/docs/overview
+  * Docs: https://hexdocs.pm/phoenix
+  * Mailing list: http://groups.google.com/group/phoenix-talk
+  * Source: https://github.com/phoenixframework/phoenix

assets/brunch-config.js

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+exports.config = {
+  // See http://brunch.io/#documentation for docs.
+  files: {
+    javascripts: {
+      joinTo: "js/app.js"
+
+      // To use a separate vendor.js bundle, specify two files path
+      // http://brunch.io/docs/config#-files-
+      // joinTo: {
+      //   "js/app.js": /^js/,
+      //   "js/vendor.js": /^(?!js)/
+      // }
+      //
+      // To change the order of concatenation of files, explicitly mention here
+      // order: {
+      //   before: [
+      //     "vendor/js/jquery-2.1.1.js",
+      //     "vendor/js/bootstrap.min.js"
+      //   ]
+      // }
+    },
+    stylesheets: {
+      joinTo: "css/app.css"
+    },
+    templates: {
+      joinTo: "js/app.js"
+    }
+  },
+
+  conventions: {
+    // This option sets where we should place non-css and non-js assets in.
+    // By default, we set this to "/assets/static". Files in this directory
+    // will be copied to `paths.public`, which is "priv/static" by default.
+    assets: /^(static)/
+  },
+
+  // Phoenix paths configuration
+  paths: {
+    // Dependencies and current project directories to watch
+    watched: ["static", "css", "js", "vendor"],
+    // Where to compile files to
+    public: "../priv/static"
+  },
+
+  // Configure your plugins
+  plugins: {
+    babel: {
+      // Do not use ES6 compiler in vendor code
+      ignore: [/vendor/]
+    }
+  },
+
+  modules: {
+    autoRequire: {
+      "js/app.js": ["js/app"]
+    }
+  },
+
+  npm: {
+    enabled: true
+  }
+};

assets/css/app.css

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+/* This file is for your main application css. */

assets/js/app.js

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+// Brunch automatically concatenates all files in your
+// watched paths. Those paths can be configured at
+// config.paths.watched in "brunch-config.js".
+//
+// However, those files will only be executed if
+// explicitly imported. The only exception are files
+// in vendor, which are never wrapped in imports and
+// therefore are always executed.
+
+// Import dependencies
+//
+// If you no longer want to use a dependency, remember
+// to also remove its path from "config.paths.watched".
+import "phoenix_html"
+
+// Import local files
+//
+// Local files can be imported directly using relative
+// paths "./socket" or full ones "web/static/js/socket".
+
+// import socket from "./socket"

assets/js/socket.js

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+// NOTE: The contents of this file will only be executed if
+// you uncomment its entry in "assets/js/app.js".
+
+// To use Phoenix channels, the first step is to import Socket
+// and connect at the socket path in "lib/web/endpoint.ex":
+import {Socket} from "phoenix"
+
+let socket = new Socket("/socket", {params: {token: window.userToken}})
+
+// When you connect, you'll often need to authenticate the client.
+// For example, imagine you have an authentication plug, `MyAuth`,
+// which authenticates the session and assigns a `:current_user`.
+// If the current user exists you can assign the user's token in
+// the connection for use in the layout.
+//
+// In your "lib/web/router.ex":
+//
+//     pipeline :browser do
+//       ...
+//       plug MyAuth
+//       plug :put_user_token
+//     end
+//
+//     defp put_user_token(conn, _) do
+//       if current_user = conn.assigns[:current_user] do
+//         token = Phoenix.Token.sign(conn, "user socket", current_user.id)
+//         assign(conn, :user_token, token)
+//       else
+//         conn
+//       end
+//     end
+//
+// Now you need to pass this token to JavaScript. You can do so
+// inside a script tag in "lib/web/templates/layout/app.html.eex":
+//
+//     <script>window.userToken = "<%= assigns[:user_token] %>";</script>
+//
+// You will need to verify the user token in the "connect/2" function
+// in "lib/web/channels/user_socket.ex":
+//
+//     def connect(%{"token" => token}, socket) do
+//       # max_age: 1209600 is equivalent to two weeks in seconds
+//       case Phoenix.Token.verify(socket, "user socket", token, max_age: 1209600) do
+//         {:ok, user_id} ->
+//           {:ok, assign(socket, :user, user_id)}
+//         {:error, reason} ->
+//           :error
+//       end
+//     end
+//
+// Finally, pass the token on connect as below. Or remove it
+// from connect if you don't care about authentication.
+
+socket.connect()
+
+// Now that you are connected, you can join channels with a topic:
+let channel = socket.channel("topic:subtopic", {})
+channel.join()
+  .receive("ok", resp => { console.log("Joined successfully", resp) })
+  .receive("error", resp => { console.log("Unable to join", resp) })
+
+export default socket

assets/package.json

@@ -0,0 +1,18 @@
+{
+  "repository": {},
+  "license": "MIT",
+  "scripts": {
+    "deploy": "brunch build --production",
+    "watch": "brunch watch --stdin"
+  },
+  "dependencies": {
+    "phoenix": "file:../deps/phoenix",
+    "phoenix_html": "file:../deps/phoenix_html"
+  },
+  "devDependencies": {
+    "babel-brunch": "6.1.1",
+    "brunch": "2.10.9",
+    "clean-css-brunch": "2.10.0",
+    "uglify-js-brunch": "2.10.0"
+  }
+}

assets/static/robots.txt

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+# See http://www.robotstxt.org/robotstxt.html for documentation on how to use the robots.txt file
+#
+# To ban all spiders from the entire site uncomment the next two lines:
+# User-agent: *
+# Disallow: /

config/config.exs

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+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+#
+# This configuration file is loaded before any dependency and
+# is restricted to this project.
+use Mix.Config
+
+# General application configuration
+config :forum,
+  ecto_repos: [Forum.Repo]
+
+# Configures the endpoint
+config :forum, ForumWeb.Endpoint,
+  url: [host: "localhost"],
+  secret_key_base: "aeA4uftla9TE8RnlDLCEqfTQKlxyII55eKWg1kABK47arvmSHxkaCZdMYQ883NiP",
+  render_errors: [view: ForumWeb.ErrorView, accepts: ~w(html json)],
+  pubsub: [name: Forum.PubSub,
+           adapter: Phoenix.PubSub.PG2]
+
+# Configures Elixir's Logger
+config :logger, :console,
+  format: "$time $metadata[$level] $message\n",
+  metadata: [:request_id]
+
+# Import environment specific config. This must remain at the bottom
+# of this file so it overrides the configuration defined above.
+import_config "#{Mix.env}.exs"

config/dev.exs

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+use Mix.Config
+
+# For development, we disable any cache and enable
+# debugging and code reloading.
+#
+# The watchers configuration can be used to run external
+# watchers to your application. For example, we use it
+# with brunch.io to recompile .js and .css sources.
+config :forum, ForumWeb.Endpoint,
+  http: [port: 4000],
+  debug_errors: true,
+  code_reloader: true,
+  check_origin: false,
+  watchers: [node: ["node_modules/brunch/bin/brunch", "watch", "--stdin",
+                    cd: Path.expand("../assets", __DIR__)]]
+
+# ## SSL Support
+#
+# In order to use HTTPS in development, a self-signed
+# certificate can be generated by running the following
+# command from your terminal:
+#
+#     openssl req -new -newkey rsa:4096 -days 365 -nodes -x509 -subj "/C=US/ST=Denial/L=Springfield/O=Dis/CN=www.example.com" -keyout priv/server.key -out priv/server.pem
+#
+# The `http:` config above can be replaced with:
+#
+#     https: [port: 4000, keyfile: "priv/server.key", certfile: "priv/server.pem"],
+#
+# If desired, both `http:` and `https:` keys can be
+# configured to run both http and https servers on
+# different ports.
+
+# Watch static and templates for browser reloading.
+config :forum, ForumWeb.Endpoint,
+  live_reload: [
+    patterns: [
+      ~r{priv/static/.*(js|css|png|jpeg|jpg|gif|svg)$},
+      ~r{priv/gettext/.*(po)$},
+      ~r{lib/forum_web/views/.*(ex)$},
+      ~r{lib/forum_web/templates/.*(eex)$}
+    ]
+  ]
+
+# Do not include metadata nor timestamps in development logs
+config :logger, :console, format: "[$level] $message\n"
+
+# Set a higher stacktrace during development. Avoid configuring such
+# in production as building large stacktraces may be expensive.
+config :phoenix, :stacktrace_depth, 20
+
+# Configure your database
+config :forum, Forum.Repo,
+  adapter: Ecto.Adapters.MySQL,
+  username: "elxir",
+  password: "elxir",
+  database: "forum_dev",
+  hostname: "localhost",
+  pool_size: 10

config/prod.exs

@@ -0,0 +1,64 @@
+use Mix.Config
+
+# For production, we often load configuration from external
+# sources, such as your system environment. For this reason,
+# you won't find the :http configuration below, but set inside
+# ForumWeb.Endpoint.init/2 when load_from_system_env is
+# true. Any dynamic configuration should be done there.
+#
+# Don't forget to configure the url host to something meaningful,
+# Phoenix uses this information when generating URLs.
+#
+# Finally, we also include the path to a cache manifest
+# containing the digested version of static files. This
+# manifest is generated by the mix phx.digest task
+# which you typically run after static files are built.
+config :forum, ForumWeb.Endpoint,
+  load_from_system_env: true,
+  url: [host: "example.com", port: 80],
+  cache_static_manifest: "priv/static/cache_manifest.json"
+
+# Do not print debug messages in production
+config :logger, level: :info
+
+# ## SSL Support
+#
+# To get SSL working, you will need to add the `https` key
+# to the previous section and set your `:url` port to 443:
+#
+#     config :forum, ForumWeb.Endpoint,
+#       ...
+#       url: [host: "example.com", port: 443],
+#       https: [:inet6,
+#               port: 443,
+#               keyfile: System.get_env("SOME_APP_SSL_KEY_PATH"),
+#               certfile: System.get_env("SOME_APP_SSL_CERT_PATH")]
+#
+# Where those two env variables return an absolute path to
+# the key and cert in disk or a relative path inside priv,
+# for example "priv/ssl/server.key".
+#
+# We also recommend setting `force_ssl`, ensuring no data is
+# ever sent via http, always redirecting to https:
+#
+#     config :forum, ForumWeb.Endpoint,
+#       force_ssl: [hsts: true]
+#
+# Check `Plug.SSL` for all available options in `force_ssl`.
+
+# ## Using releases
+#
+# If you are doing OTP releases, you need to instruct Phoenix
+# to start the server for all endpoints:
+#
+#     config :phoenix, :serve_endpoints, true
+#
+# Alternatively, you can configure exactly which server to
+# start per endpoint:
+#
+#     config :forum, ForumWeb.Endpoint, server: true
+#
+
+# Finally import the config/prod.secret.exs
+# which should be versioned separately.
+import_config "prod.secret.exs"

config/test.exs

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+use Mix.Config
+
+# We don't run a server during test. If one is required,
+# you can enable the server option below.
+config :forum, ForumWeb.Endpoint,
+  http: [port: 4001],
+  server: false
+
+# Print only warnings and errors during test
+config :logger, level: :warn
+
+# Configure your database
+config :forum, Forum.Repo,
+  adapter: Ecto.Adapters.MySQL,
+  username: "root",
+  password: "",
+  database: "forum_test",
+  hostname: "localhost",
+  pool: Ecto.Adapters.SQL.Sandbox

lib/forum.ex

@@ -0,0 +1,9 @@
+defmodule Forum do
+  @moduledoc """
+  Forum keeps the contexts that define your domain
+  and business logic.
+
+  Contexts are also responsible for managing your data, regardless
+  if it comes from the database, an external API or others.
+  """
+end

lib/forum/application.ex

@@ -0,0 +1,31 @@
+defmodule Forum.Application do
+  use Application
+
+  # See https://hexdocs.pm/elixir/Application.html
+  # for more information on OTP Applications
+  def start(_type, _args) do
+    import Supervisor.Spec
+
+    # Define workers and child supervisors to be supervised
+    children = [
+      # Start the Ecto repository
+      supervisor(Forum.Repo, []),
+      # Start the endpoint when the application starts
+      supervisor(ForumWeb.Endpoint, []),
+      # Start your own worker by calling: Forum.Worker.start_link(arg1, arg2, arg3)
+      # worker(Forum.Worker, [arg1, arg2, arg3]),
+    ]
+
+    # See https://hexdocs.pm/elixir/Supervisor.html
+    # for other strategies and supported options
+    opts = [strategy: :one_for_one, name: Forum.Supervisor]
+    Supervisor.start_link(children, opts)
+  end
+
+  # Tell Phoenix to update the endpoint configuration
+  # whenever the application is updated.
+  def config_change(changed, _new, removed) do
+    ForumWeb.Endpoint.config_change(changed, removed)
+    :ok
+  end
+end

lib/forum/repo.ex

@@ -0,0 +1,11 @@
+defmodule Forum.Repo do
+  use Ecto.Repo, otp_app: :forum
+
+  @doc """
+  Dynamically loads the repository url from the
+  DATABASE_URL environment variable.
+  """
+  def init(_, opts) do
+    {:ok, Keyword.put(opts, :url, System.get_env("DATABASE_URL"))}
+  end
+end

lib/forum_web.ex

@@ -0,0 +1,67 @@
+defmodule ForumWeb do
+  @moduledoc """
+  The entrypoint for defining your web interface, such
+  as controllers, views, channels and so on.
+
+  This can be used in your application as:
+
+      use ForumWeb, :controller
+      use ForumWeb, :view
+
+  The definitions below will be executed for every view,
+  controller, etc, so keep them short and clean, focused
+  on imports, uses and aliases.
+
+  Do NOT define functions inside the quoted expressions
+  below. Instead, define any helper function in modules
+  and import those modules here.
+  """
+
+  def controller do
+    quote do
+      use Phoenix.Controller, namespace: ForumWeb
+      import Plug.Conn
+      import ForumWeb.Router.Helpers
+      import ForumWeb.Gettext
+    end
+  end
+
+  def view do
+    quote do
+      use Phoenix.View, root: "lib/forum_web/templates",
+                        namespace: ForumWeb
+
+      # Import convenience functions from controllers
+      import Phoenix.Controller, only: [get_flash: 2, view_module: 1]
+
+      # Use all HTML functionality (forms, tags, etc)
+      use Phoenix.HTML
+
+      import ForumWeb.Router.Helpers
+      import ForumWeb.ErrorHelpers
+      import ForumWeb.Gettext
+    end
+  end
+
+  def router do
+    quote do
+      use Phoenix.Router
+      import Plug.Conn
+      import Phoenix.Controller
+    end
+  end
+
+  def channel do
+    quote do
+      use Phoenix.Channel
+      import ForumWeb.Gettext
+    end
+  end
+
+  @doc """
+  When used, dispatch to the appropriate controller/view/etc.
+  """
+  defmacro __using__(which) when is_atom(which) do
+    apply(__MODULE__, which, [])
+  end
+end

lib/forum_web/channels/user_socket.ex

@@ -0,0 +1,37 @@
+defmodule ForumWeb.UserSocket do
+  use Phoenix.Socket
+
+  ## Channels
+  # channel "room:*", ForumWeb.RoomChannel
+
+  ## Transports
+  transport :websocket, Phoenix.Transports.WebSocket
+  # transport :longpoll, Phoenix.Transports.LongPoll
+
+  # Socket params are passed from the client and can
+  # be used to verify and authenticate a user. After
+  # verification, you can put default assigns into
+  # the socket that will be set for all channels, ie
+  #
+  #     {:ok, assign(socket, :user_id, verified_user_id)}
+  #
+  # To deny connection, return `:error`.
+  #
+  # See `Phoenix.Token` documentation for examples in
+  # performing token verification on connect.
+  def connect(_params, socket) do
+    {:ok, socket}
+  end
+
+  # Socket id's are topics that allow you to identify all sockets for a given user:
+  #
+  #     def id(socket), do: "user_socket:#{socket.assigns.user_id}"
+  #
+  # Would allow you to broadcast a "disconnect" event and terminate
+  # all active sockets and channels for a given user:
+  #
+  #     ForumWeb.Endpoint.broadcast("user_socket:#{user.id}", "disconnect", %{})
+  #
+  # Returning `nil` makes this socket anonymous.
+  def id(_socket), do: nil
+end

lib/forum_web/controllers/hello_controller.ex

@@ -0,0 +1,7 @@
+defmodule ForumWeb.HelloController do
+    use ForumWeb, :controller
+
+    def index(conn, _params) do
+        render conn, "index.html"
+    end
+end

lib/forum_web/controllers/page_controller.ex

@@ -0,0 +1,7 @@
+defmodule ForumWeb.PageController do
+  use ForumWeb, :controller
+
+  def index(conn, _params) do
+    render conn, "index.html"
+  end
+end

lib/forum_web/endpoint.ex

@@ -0,0 +1,57 @@
+defmodule ForumWeb.Endpoint do
+  use Phoenix.Endpoint, otp_app: :forum
+
+  socket "/socket", ForumWeb.UserSocket
+
+  # Serve at "/" the static files from "priv/static" directory.
+  #
+  # You should set gzip to true if you are running phoenix.digest
+  # when deploying your static files in production.
+  plug Plug.Static,
+    at: "/", from: :forum, gzip: false,
+    only: ~w(css fonts images js favicon.ico robots.txt)
+
+  # Code reloading can be explicitly enabled under the
+  # :code_reloader configuration of your endpoint.
+  if code_reloading? do
+    socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket
+    plug Phoenix.LiveReloader
+    plug Phoenix.CodeReloader
+  end
+
+  plug Plug.RequestId
+  plug Plug.Logger
+
+  plug Plug.Parsers,
+    parsers: [:urlencoded, :multipart, :json],
+    pass: ["*/*"],
+    json_decoder: Poison
+
+  plug Plug.MethodOverride
+  plug Plug.Head
+
+  # The session will be stored in the cookie and signed,
+  # this means its contents can be read but not tampered with.
+  # Set :encryption_salt if you would also like to encrypt it.
+  plug Plug.Session,
+    store: :cookie,
+    key: "_forum_key",
+    signing_salt: "2ulAW+h7"
+
+  plug ForumWeb.Router
+
+  @doc """
+  Callback invoked for dynamically configuring the endpoint.
+
+  It receives the endpoint configuration and checks if
+  configuration should be loaded from the system environment.
+  """
+  def init(_key, config) do
+    if config[:load_from_system_env] do
+      port = System.get_env("PORT") || raise "expected the PORT environment variable to be set"
+      {:ok, Keyword.put(config, :http, [:inet6, port: port])}
+    else
+      {:ok, config}
+    end
+  end
+end

lib/forum_web/gettext.ex

@@ -0,0 +1,24 @@
+defmodule ForumWeb.Gettext do
+  @moduledoc """
+  A module providing Internationalization with a gettext-based API.
+
+  By using [Gettext](https://hexdocs.pm/gettext),
+  your module gains a set of macros for translations, for example:
+
+      import ForumWeb.Gettext
+
+      # Simple translation
+      gettext "Here is the string to translate"
+
+      # Plural translation
+      ngettext "Here is the string to translate",
+               "Here are the strings to translate",
+               3
+
+      # Domain-based translation
+      dgettext "errors", "Here is the error message to translate"
+
+  See the [Gettext Docs](https://hexdocs.pm/gettext) for detailed usage.
+  """
+  use Gettext, otp_app: :forum
+end

lib/forum_web/router.ex

@@ -0,0 +1,27 @@
+defmodule ForumWeb.Router do
+  use ForumWeb, :router
+
+  pipeline :browser do
+    plug :accepts, ["html"]
+    plug :fetch_session
+    plug :fetch_flash
+    plug :protect_from_forgery
+    plug :put_secure_browser_headers
+  end
+
+  pipeline :api do
+    plug :accepts, ["json"]
+  end
+
+  scope "/", ForumWeb do
+    pipe_through :browser # Use the default browser stack
+
+    get "/", PageController, :index
+    get "/hello", HelloController, :index
+  end
+
+  # Other scopes may use custom stacks.
+  # scope "/api", ForumWeb do
+  #   pipe_through :api
+  # end
+end

lib/forum_web/templates/hello/index.html.eex

@@ -0,0 +1,3 @@
+<div class="jumbotron">
+    <h2>Henlo</h2>
+</div>

lib/forum_web/templates/layout/app.html.eex

@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="description" content="">
+    <meta name="author" content="">
+
+    <title>Hello Forum!</title>
+    <link rel="stylesheet" href="<%= static_path(@conn, "/css/app.css") %>">
+  </head>
+
+  <body>
+    <div class="container">
+      <header class="header">
+        <nav role="navigation">
+          <ul class="nav nav-pills pull-right">
+            <li><a href="http://www.phoenixframework.org/docs">Get Started</a></li>
+          </ul>
+        </nav>
+        <span class="logo"></span>
+      </header>
+
+      <p class="alert alert-info" role="alert"><%= get_flash(@conn, :info) %></p>
+      <p class="alert alert-danger" role="alert"><%= get_flash(@conn, :error) %></p>
+
+      <main role="main">
+        <%= render @view_module, @view_template, assigns %>
+      </main>
+
+    </div> <!-- /container -->
+    <script src="<%= static_path(@conn, "/js/app.js") %>"></script>
+  </body>
+</html>

lib/forum_web/templates/page/index.html.eex

@@ -0,0 +1,36 @@
+<div class="jumbotron">
+  <h2><%= gettext "Welcome to %{name}!", name: "Phoenix" %></h2>
+  <p class="lead">A productive web framework that<br />does not compromise speed and maintainability.</p>
+</div>
+
+<div class="row marketing">
+  <div class="col-lg-6">
+    <h4>Resources</h4>
+    <ul>
+      <li>
+        <a href="http://phoenixframework.org/docs/overview">Guides</a>
+      </li>
+      <li>
+        <a href="https://hexdocs.pm/phoenix">Docs</a>
+      </li>
+      <li>
+        <a href="https://github.com/phoenixframework/phoenix">Source</a>
+      </li>
+    </ul>
+  </div>
+
+  <div class="col-lg-6">
+    <h4>Help</h4>
+    <ul>
+      <li>
+        <a href="http://groups.google.com/group/phoenix-talk">Mailing list</a>
+      </li>
+      <li>
+        <a href="http://webchat.freenode.net/?channels=elixir-lang">#elixir-lang on freenode IRC</a>
+      </li>
+      <li>
+        <a href="https://twitter.com/elixirphoenix">@elixirphoenix</a>
+      </li>
+    </ul>
+  </div>
+</div>

lib/forum_web/views/error_helpers.ex

@@ -0,0 +1,40 @@
+defmodule ForumWeb.ErrorHelpers do
+  @moduledoc """
+  Conveniences for translating and building error messages.
+  """
+
+  use Phoenix.HTML
+
+  @doc """
+  Generates tag for inlined form input errors.
+  """
+  def error_tag(form, field) do
+    Enum.map(Keyword.get_values(form.errors, field), fn (error) ->
+      content_tag :span, translate_error(error), class: "help-block"
+    end)
+  end
+
+  @doc """
+  Translates an error message using gettext.
+  """
+  def translate_error({msg, opts}) do
+    # Because error messages were defined within Ecto, we must
+    # call the Gettext module passing our Gettext backend. We
+    # also use the "errors" domain as translations are placed
+    # in the errors.po file.
+    # Ecto will pass the :count keyword if the error message is
+    # meant to be pluralized.
+    # On your own code and templates, depending on whether you
+    # need the message to be pluralized or not, this could be
+    # written simply as:
+    #
+    #     dngettext "errors", "1 file", "%{count} files", count
+    #     dgettext "errors", "is invalid"
+    #
+    if count = opts[:count] do
+      Gettext.dngettext(ForumWeb.Gettext, "errors", msg, msg, count, opts)
+    else
+      Gettext.dgettext(ForumWeb.Gettext, "errors", msg, opts)
+    end
+  end
+end

lib/forum_web/views/error_view.ex

@@ -0,0 +1,17 @@
+defmodule ForumWeb.ErrorView do
+  use ForumWeb, :view
+
+  def render("404.html", _assigns) do
+    "Page not found"
+  end
+
+  def render("500.html", _assigns) do
+    "Internal server error"
+  end
+
+  # In case no render clause matches or no
+  # template is found, let's render it as 500
+  def template_not_found(_template, assigns) do
+    render "500.html", assigns
+  end
+end

lib/forum_web/views/hello_view.ex

@@ -0,0 +1,3 @@
+defmodule ForumWeb.HelloView do
+    use ForumWeb, :view
+end

lib/forum_web/views/layout_view.ex

@@ -0,0 +1,3 @@
+defmodule ForumWeb.LayoutView do
+  use ForumWeb, :view
+end

lib/forum_web/views/page_view.ex

@@ -0,0 +1,3 @@
+defmodule ForumWeb.PageView do
+  use ForumWeb, :view
+end

mix.exs

@@ -0,0 +1,60 @@
+defmodule Forum.Mixfile do
+  use Mix.Project
+
+  def project do
+    [
+      app: :forum,
+      version: "0.0.1",
+      elixir: "~> 1.4",
+      elixirc_paths: elixirc_paths(Mix.env),
+      compilers: [:phoenix, :gettext] ++ Mix.compilers,
+      start_permanent: Mix.env == :prod,
+      aliases: aliases(),
+      deps: deps()
+    ]
+  end
+
+  # Configuration for the OTP application.
+  #
+  # Type `mix help compile.app` for more information.
+  def application do
+    [
+      mod: {Forum.Application, []},
+      extra_applications: [:logger, :runtime_tools]
+    ]
+  end
+
+  # Specifies which paths to compile per environment.
+  defp elixirc_paths(:test), do: ["lib", "test/support"]
+  defp elixirc_paths(_),     do: ["lib"]
+
+  # Specifies your project dependencies.
+  #
+  # Type `mix help deps` for examples and options.
+  defp deps do
+    [
+      {:phoenix, "~> 1.3.0"},
+      {:phoenix_pubsub, "~> 1.0"},
+      {:phoenix_ecto, "~> 3.2"},
+      {:mariaex, ">= 0.0.0"},
+      {:phoenix_html, "~> 2.10"},
+      {:phoenix_live_reload, "~> 1.0", only: :dev},
+      {:gettext, "~> 0.11"},
+      {:cowboy, "~> 1.0"}
+    ]
+  end
+
+  # Aliases are shortcuts or tasks specific to the current project.
+  # For example, to create, migrate and run the seeds file at once:
+  #
+  #     $ mix ecto.setup
+  #
+  # See the documentation for `Mix` for more info on aliases.
+  defp aliases do
+    [
+      "ecto.setup": ["ecto.create", "ecto.migrate", "run priv/repo/seeds.exs"],
+      "ecto.reset": ["ecto.drop", "ecto.setup"],
+      "test": ["ecto.create --quiet", "ecto.migrate", "test"]
+    ]
+  end
+end

mix.lock

@@ -0,0 +1,21 @@
+%{
+  "connection": {:hex, :connection, "1.0.4", "a1cae72211f0eef17705aaededacac3eb30e6625b04a6117c1b2db6ace7d5976", [:mix], [], "hexpm"},
+  "cowboy": {:hex, :cowboy, "1.1.2", "61ac29ea970389a88eca5a65601460162d370a70018afe6f949a29dca91f3bb0", [:rebar3], [{:cowlib, "~> 1.0.2", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "~> 1.3.2", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm"},
+  "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [:make], [], "hexpm"},
+  "db_connection": {:hex, :db_connection, "1.1.3", "89b30ca1ef0a3b469b1c779579590688561d586694a3ce8792985d4d7e575a61", [:mix], [{:connection, "~> 1.0.2", [hex: :connection, repo: "hexpm", optional: false]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},
+  "decimal": {:hex, :decimal, "1.4.1", "ad9e501edf7322f122f7fc151cce7c2a0c9ada96f2b0155b8a09a795c2029770", [:mix], [], "hexpm"},
+  "ecto": {:hex, :ecto, "2.2.8", "a4463c0928b970f2cee722cd29aaac154e866a15882c5737e0038bbfcf03ec2c", [:mix], [{:db_connection, "~> 1.1", [hex: :db_connection, repo: "hexpm", optional: true]}, {:decimal, "~> 1.2", [hex: :decimal, repo: "hexpm", optional: false]}, {:mariaex, "~> 0.8.0", [hex: :mariaex, repo: "hexpm", optional: true]}, {:poison, "~> 2.2 or ~> 3.0", [hex: :poison, repo: "hexpm", optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.13.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},
+  "file_system": {:hex, :file_system, "0.2.4", "f0bdda195c0e46e987333e986452ec523aed21d784189144f647c43eaf307064", [:mix], [], "hexpm"},
+  "gettext": {:hex, :gettext, "0.14.1", "a666b6782fdb6ccb4736170ccb0928c0f773aa0e47c694d4b7d0338f724ff189", [:mix], [], "hexpm"},
+  "mariaex": {:hex, :mariaex, "0.8.4", "5dd42a600c3949ec020cfac162a815115c9e9e406abffc1b14ffdc611d6f84bc", [:mix], [{:db_connection, "~> 1.1", [hex: :db_connection, repo: "hexpm", optional: false]}, {:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:poison, ">= 0.0.0", [hex: :poison, repo: "hexpm", optional: true]}], "hexpm"},
+  "mime": {:hex, :mime, "1.2.0", "78adaa84832b3680de06f88f0997e3ead3b451a440d183d688085be2d709b534", [:mix], [], "hexpm"},
+  "phoenix": {:hex, :phoenix, "1.3.0", "1c01124caa1b4a7af46f2050ff11b267baa3edb441b45dbf243e979cd4c5891b", [:mix], [{:cowboy, "~> 1.0", [hex: :cowboy, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 1.0", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:plug, "~> 1.3.3 or ~> 1.4", [hex: :plug, repo: "hexpm", optional: false]}, {:poison, "~> 2.2 or ~> 3.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
+  "phoenix_ecto": {:hex, :phoenix_ecto, "3.3.0", "702f6e164512853d29f9d20763493f2b3bcfcb44f118af2bc37bb95d0801b480", [:mix], [{:ecto, "~> 2.1", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.9", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
+  "phoenix_html": {:hex, :phoenix_html, "2.10.5", "4f9df6b0fb7422a9440a73182a566cb9cbe0e3ffe8884ef9337ccf284fc1ef0a", [:mix], [{:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
+  "phoenix_live_reload": {:hex, :phoenix_live_reload, "1.1.3", "1d178429fc8950b12457d09c6afec247bfe1fcb6f36209e18fbb0221bdfe4d41", [:mix], [{:file_system, "~> 0.2.1 or ~> 0.3", [hex: :file_system, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.0 or ~> 1.2 or ~> 1.3", [hex: :phoenix, repo: "hexpm", optional: false]}], "hexpm"},
+  "phoenix_pubsub": {:hex, :phoenix_pubsub, "1.0.2", "bfa7fd52788b5eaa09cb51ff9fcad1d9edfeb68251add458523f839392f034c1", [:mix], [], "hexpm"},
+  "plug": {:hex, :plug, "1.4.5", "7b13869283fff6b8b21b84b8735326cc012c5eef8607095dc6ee24bd0a273d8e", [:mix], [{:cowboy, "~> 1.0.1 or ~> 1.1", [hex: :cowboy, repo: "hexpm", optional: true]}, {:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}], "hexpm"},
+  "poison": {:hex, :poison, "3.1.0", "d9eb636610e096f86f25d9a46f35a9facac35609a7591b3be3326e99a0484665", [:mix], [], "hexpm"},
+  "poolboy": {:hex, :poolboy, "1.5.1", "6b46163901cfd0a1b43d692657ed9d7e599853b3b21b95ae5ae0a777cf9b6ca8", [:rebar], [], "hexpm"},
+  "ranch": {:hex, :ranch, "1.3.2", "e4965a144dc9fbe70e5c077c65e73c57165416a901bd02ea899cfd95aa890986", [:rebar3], [], "hexpm"},
+}

priv/gettext/en/LC_MESSAGES/errors.po

@@ -0,0 +1,97 @@
+## `msgid`s in this file come from POT (.pot) files.
+##
+## Do not add, change, or remove `msgid`s manually here as
+## they're tied to the ones in the corresponding POT file
+## (with the same domain).
+##
+## Use `mix gettext.extract --merge` or `mix gettext.merge`
+## to merge POT files into PO files.
+msgid ""
+msgstr ""
+"Language: en\n"
+
+## From Ecto.Changeset.cast/4
+msgid "can't be blank"
+msgstr ""
+
+## From Ecto.Changeset.unique_constraint/3
+msgid "has already been taken"
+msgstr ""
+
+## From Ecto.Changeset.put_change/3
+msgid "is invalid"
+msgstr ""
+
+## From Ecto.Changeset.validate_acceptance/3
+msgid "must be accepted"
+msgstr ""
+
+## From Ecto.Changeset.validate_format/3
+msgid "has invalid format"
+msgstr ""
+
+## From Ecto.Changeset.validate_subset/3
+msgid "has an invalid entry"
+msgstr ""
+
+## From Ecto.Changeset.validate_exclusion/3
+msgid "is reserved"
+msgstr ""
+
+## From Ecto.Changeset.validate_confirmation/3
+msgid "does not match confirmation"
+msgstr ""
+
+## From Ecto.Changeset.no_assoc_constraint/3
+msgid "is still associated with this entry"
+msgstr ""
+
+msgid "are still associated with this entry"
+msgstr ""
+
+## From Ecto.Changeset.validate_length/3
+msgid "should be %{count} character(s)"
+msgid_plural "should be %{count} character(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should have %{count} item(s)"
+msgid_plural "should have %{count} item(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should be at least %{count} character(s)"
+msgid_plural "should be at least %{count} character(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should have at least %{count} item(s)"
+msgid_plural "should have at least %{count} item(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should be at most %{count} character(s)"
+msgid_plural "should be at most %{count} character(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should have at most %{count} item(s)"
+msgid_plural "should have at most %{count} item(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+## From Ecto.Changeset.validate_number/3
+msgid "must be less than %{number}"
+msgstr ""
+
+msgid "must be greater than %{number}"
+msgstr ""
+
+msgid "must be less than or equal to %{number}"
+msgstr ""
+
+msgid "must be greater than or equal to %{number}"
+msgstr ""
+
+msgid "must be equal to %{number}"
+msgstr ""

priv/gettext/errors.pot

@@ -0,0 +1,95 @@
+## This file is a PO Template file.
+##
+## `msgid`s here are often extracted from source code.
+## Add new translations manually only if they're dynamic
+## translations that can't be statically extracted.
+##
+## Run `mix gettext.extract` to bring this file up to
+## date. Leave `msgstr`s empty as changing them here as no
+## effect: edit them in PO (`.po`) files instead.
+
+## From Ecto.Changeset.cast/4
+msgid "can't be blank"
+msgstr ""
+
+## From Ecto.Changeset.unique_constraint/3
+msgid "has already been taken"
+msgstr ""
+
+## From Ecto.Changeset.put_change/3
+msgid "is invalid"
+msgstr ""
+
+## From Ecto.Changeset.validate_acceptance/3
+msgid "must be accepted"
+msgstr ""
+
+## From Ecto.Changeset.validate_format/3
+msgid "has invalid format"
+msgstr ""
+
+## From Ecto.Changeset.validate_subset/3
+msgid "has an invalid entry"
+msgstr ""
+
+## From Ecto.Changeset.validate_exclusion/3
+msgid "is reserved"
+msgstr ""
+
+## From Ecto.Changeset.validate_confirmation/3
+msgid "does not match confirmation"
+msgstr ""
+
+## From Ecto.Changeset.no_assoc_constraint/3
+msgid "is still associated with this entry"
+msgstr ""
+
+msgid "are still associated with this entry"
+msgstr ""
+
+## From Ecto.Changeset.validate_length/3
+msgid "should be %{count} character(s)"
+msgid_plural "should be %{count} character(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should have %{count} item(s)"
+msgid_plural "should have %{count} item(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should be at least %{count} character(s)"
+msgid_plural "should be at least %{count} character(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should have at least %{count} item(s)"
+msgid_plural "should have at least %{count} item(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should be at most %{count} character(s)"
+msgid_plural "should be at most %{count} character(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+msgid "should have at most %{count} item(s)"
+msgid_plural "should have at most %{count} item(s)"
+msgstr[0] ""
+msgstr[1] ""
+
+## From Ecto.Changeset.validate_number/3
+msgid "must be less than %{number}"
+msgstr ""
+
+msgid "must be greater than %{number}"
+msgstr ""
+
+msgid "must be less than or equal to %{number}"
+msgstr ""
+
+msgid "must be greater than or equal to %{number}"
+msgstr ""
+
+msgid "must be equal to %{number}"
+msgstr ""

priv/repo/seeds.exs

@@ -0,0 +1,11 @@
+# Script for populating the database. You can run it as:
+#
+#     mix run priv/repo/seeds.exs
+#
+# Inside the script, you can read and write to any of your
+# repositories directly:
+#
+#     Forum.Repo.insert!(%Forum.SomeSchema{})
+#
+# We recommend using the bang functions (`insert!`, `update!`
+# and so on) as they will fail if something goes wrong.

test/forum_web/controllers/page_controller_test.exs

@@ -0,0 +1,8 @@
+defmodule ForumWeb.PageControllerTest do
+  use ForumWeb.ConnCase
+
+  test "GET /", %{conn: conn} do
+    conn = get conn, "/"
+    assert html_response(conn, 200) =~ "Welcome to Phoenix!"
+  end
+end

test/forum_web/views/error_view_test.exs

@@ -0,0 +1,21 @@
+defmodule ForumWeb.ErrorViewTest do
+  use ForumWeb.ConnCase, async: true
+
+  # Bring render/3 and render_to_string/3 for testing custom views
+  import Phoenix.View
+
+  test "renders 404.html" do
+    assert render_to_string(ForumWeb.ErrorView, "404.html", []) ==
+           "Page not found"
+  end
+
+  test "render 500.html" do
+    assert render_to_string(ForumWeb.ErrorView, "500.html", []) ==
+           "Internal server error"
+  end
+
+  test "render any other" do
+    assert render_to_string(ForumWeb.ErrorView, "505.html", []) ==
+           "Internal server error"
+  end
+end

test/forum_web/views/layout_view_test.exs

@@ -0,0 +1,3 @@
+defmodule ForumWeb.LayoutViewTest do
+  use ForumWeb.ConnCase, async: true
+end

test/forum_web/views/page_view_test.exs

@@ -0,0 +1,3 @@
+defmodule ForumWeb.PageViewTest do
+  use ForumWeb.ConnCase, async: true
+end

test/support/channel_case.ex

@@ -0,0 +1,37 @@
+defmodule ForumWeb.ChannelCase do
+  @moduledoc """
+  This module defines the test case to be used by
+  channel tests.
+
+  Such tests rely on `Phoenix.ChannelTest` and also
+  import other functionality to make it easier
+  to build common datastructures and query the data layer.
+
+  Finally, if the test case interacts with the database,
+  it cannot be async. For this reason, every test runs
+  inside a transaction which is reset at the beginning
+  of the test unless the test case is marked as async.
+  """
+
+  use ExUnit.CaseTemplate
+
+  using do
+    quote do
+      # Import conveniences for testing with channels
+      use Phoenix.ChannelTest
+
+      # The default endpoint for testing
+      @endpoint ForumWeb.Endpoint
+    end
+  end
+
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(Forum.Repo)
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(Forum.Repo, {:shared, self()})
+    end
+    :ok
+  end
+
+end

test/support/conn_case.ex

@@ -0,0 +1,38 @@
+defmodule ForumWeb.ConnCase do
+  @moduledoc """
+  This module defines the test case to be used by
+  tests that require setting up a connection.
+
+  Such tests rely on `Phoenix.ConnTest` and also
+  import other functionality to make it easier
+  to build common datastructures and query the data layer.
+
+  Finally, if the test case interacts with the database,
+  it cannot be async. For this reason, every test runs
+  inside a transaction which is reset at the beginning
+  of the test unless the test case is marked as async.
+  """
+
+  use ExUnit.CaseTemplate
+
+  using do
+    quote do
+      # Import conveniences for testing with connections
+      use Phoenix.ConnTest
+      import ForumWeb.Router.Helpers
+
+      # The default endpoint for testing
+      @endpoint ForumWeb.Endpoint
+    end
+  end
+
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(Forum.Repo)
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(Forum.Repo, {:shared, self()})
+    end
+    {:ok, conn: Phoenix.ConnTest.build_conn()}
+  end
+
+end

test/support/data_case.ex

@@ -0,0 +1,53 @@
+defmodule Forum.DataCase do
+  @moduledoc """
+  This module defines the setup for tests requiring
+  access to the application's data layer.
+
+  You may define functions here to be used as helpers in
+  your tests.
+
+  Finally, if the test case interacts with the database,
+  it cannot be async. For this reason, every test runs
+  inside a transaction which is reset at the beginning
+  of the test unless the test case is marked as async.
+  """
+
+  use ExUnit.CaseTemplate
+
+  using do
+    quote do
+      alias Forum.Repo
+
+      import Ecto
+      import Ecto.Changeset
+      import Ecto.Query
+      import Forum.DataCase
+    end
+  end
+
+  setup tags do
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(Forum.Repo)
+
+    unless tags[:async] do
+      Ecto.Adapters.SQL.Sandbox.mode(Forum.Repo, {:shared, self()})
+    end
+
+    :ok
+  end
+
+  @doc """
+  A helper that transform changeset errors to a map of messages.
+
+      assert {:error, changeset} = Accounts.create_user(%{password: "short"})
+      assert "password is too short" in errors_on(changeset).password
+      assert %{password: ["password is too short"]} = errors_on(changeset)
+
+  """
+  def errors_on(changeset) do
+    Ecto.Changeset.traverse_errors(changeset, fn {message, opts} ->
+      Enum.reduce(opts, message, fn {key, value}, acc ->
+        String.replace(acc, "%{#{key}}", to_string(value))
+      end)
+    end)
+  end
+end

test/test_helper.exs

@@ -0,0 +1,4 @@
+ExUnit.start()
+
+Ecto.Adapters.SQL.Sandbox.mode(Forum.Repo, :manual)
+