Elixir Installation

http://elixir-lang.org/install.html OS X:

brew install elixir

Check elixir version:

$ elixir --version
Elixir 1.2.1

$ erl -version
Erlang (SMP,ASYNC_THREADS,HIPE) (BEAM) emulator version 7.2.1

Node.js install: https://nodejs.org/en/download/stable/

$ node -v
v5.10.1

$ npm -v
3.8.3

iex - ruby irb equivalent iex -S mix - rails c equivalent

Getting the Phoenix Framework

$ git clone https://github.com/phoenixframework/phoenix.git
$ cd phoenix

Get deps and compile phoenix project before start

$ mix do deps.get, compile

Intall phoenix.new task

$ mix archive.install https://github.com/phoenixframework/archives/raw/master/phoenix_new.ez

Create postgres user

$ createuser ectouser --pwprompt

create db for this user

$ createdb -Oectouser -Eutf8 demo_phoenix_development

or grant access to create database. connect to postgres and type:

ALTER USER ectouser CREATEDB;

Make sure you can login to database

$ psql demo_phoenix_development --user ectouser --password

Create new project

$ mix phoenix.new ../demo_phoenix
$ cd ../demo_phoenix
$ mix do deps.get, compile
$ git init
$ git add .
$ git commit -m 'First commit'

Start server

$ mix phoenix.server

Create controller

web/controllers/quote_controller.ex

defmodule DemoPhoenix.QuoteController do
  use DemoPhoenix.Web, :controller

  def homepage(conn, _params) do
    render conn, "homepage.html"
  end
end

Create new view file

Create view file

web/views/quote_view.ex

defmodule DemoPhoenix.QuoteView do
  use DemoPhoenix.Web, :view
end

Create template

mkdir web/templates/quote

web/templates/quote/homepage.html.eex

1 + 1 = <%= 1 + 1 %>

Create database migration

Update database settings at config/dev/exs

Create migration file

mix ecto.gen.migration create_quotes

Create table in migration file

defmodule DemoPhoenix.Repo.Migrations.CreateQuotes do
  use Ecto.Migration

  def change do
    create table(:quotes) do
      add :saying, :string
      add :author, :string

      timestamps
    end
  end
end

Create database and run migrations

mix ecto.create
mix ecto.migrate

Set up a model

web/models/quote.ex

defmodule DemoPhoenix.Quote do
  use Ecto.Model

  schema "quotes" do
    field :saying, :string
    field :author, :string

    timestamps
  end

  @required_fields ~w(saying author)
  @optional_fields ~w()
end

iex -S mix open elixir console

Save record to database

quote = %DemoPhoenix.Quote{saying: "First message.", author: "Bob Smith"}
DemoPhoenix.Repo.insert(quote)

Load record from database where 1 - quotes.id

quote2 = DemoPhoenix.Repo.get(DemoPhoenix.Quote, 1)

Update and restroy record

quote3 = DemoPhoenix.Repo.get_by(DemoPhoenix.Quote, author: "Bob Smith")
changeset = Ecto.Changeset.cast(quote3, %{author: "Bob Smith1"}, ~w(author), ~w())
quote3 = DemoPhoenix.Repo.update!(changeset)
{:ok, deleted_post} = DemoPhoenix.Repo.delete(quote3)

Useful tasks

• mix deps.get install dependencies
• npm install install node.js dependencies
• iex -S mix elixir console
• mix phoenix.routes see routes
• mix phoenix.server start server
• mix ecto.gen.migration migration_name create migration file
• mix ecto.create create database
• mix ecto.migrate migrate database

Learn more

• Deployment guides http://www.phoenixframework.org/docs/deployment
• Official website: http://www.phoenixframework.org/
• Guides: http://phoenixframework.org/docs/overview
• Docs: http://hexdocs.pm/phoenix
• Mailing list: http://groups.google.com/group/phoenix-talk
• Source: https://github.com/phoenixframework/phoenix