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![defmodule SlackishphxWeb.CompanyController do
use SlackishphxWeb, :controller
plug SlackishphxWeb.Plugs.RequireAuth
def create(conn, %{"company" => params}) do
case Slackishphx.Auth.create_company(conn.assigns[:user], params) do
{:ok, company} ->
conn
|> create_default_channel(company)
|> switch_company(conn.assigns[:user], company)
{:error, changeset} ->
conn
|> render("new.html", changeset: changeset)
end
end
end](https://image.slidesharecdn.com/phoenixforlaraveldevelopers-171231152227/85/Phoenix-for-laravel-developers-22-320.jpg)
![defmodule SlackishphxWeb.CompanyController do
use SlackishphxWeb, :controller
plug SlackishphxWeb.Plugs.RequireAuth
def create(conn, %{"company" => params}) do
case Slackishphx.Auth.create_company(conn.assigns[:user], params) do
{:ok, company} ->
conn
|> create_default_channel(company)
|> switch_company(conn.assigns[:user], company)
{:error, changeset} ->
conn
|> render("new.html", changeset: changeset)
end
end
end](https://image.slidesharecdn.com/phoenixforlaraveldevelopers-171231152227/85/Phoenix-for-laravel-developers-23-320.jpg)
![defmodule SlackishphxWeb.CompanyController do
use SlackishphxWeb, :controller
plug SlackishphxWeb.Plugs.RequireAuth
def create(conn, %{"company" => params}) do
case Slackishphx.Auth.create_company(conn.assigns[:user], params) do
{:ok, company} ->
conn
|> create_default_channel(company)
|> switch_company(conn.assigns[:user], company)
{:error, changeset} ->
conn
|> render("new.html", changeset: changeset)
end
end
end](https://image.slidesharecdn.com/phoenixforlaraveldevelopers-171231152227/85/Phoenix-for-laravel-developers-24-320.jpg)
![defmodule Slackishphx.Auth.User do
# ...
@doc false
def register_from_google_changeset(%User{} = user, attrs) do
user
|> cast(attrs, [:name, :email, :google_id, ...])
|> validate_required([:name, :email, ...])
end
end](https://image.slidesharecdn.com/phoenixforlaraveldevelopers-171231152227/85/Phoenix-for-laravel-developers-35-320.jpg)
![Improvement points to Laravel
Broadcast::channel('App.User.{id}', function ($user, $id) {
return (int) $user->id === (int) $id;
});
Broadcast::channel('channels.{channel}', function (AppUser
$user, AppChannel $channel) {
if (!$channel->exists || !$user->canJoin($channel)) {
return false;
}
$user->joinChannel($channel);
return [
'id' => $user->id,
'name' => $user->name,
'avatar_path' => $user->avatar_path,
];
});
channel "companies:*", SlackishphxWeb.CompanyChannel
channel "rooms:*", SlackishphxWeb.RoomChannel](https://image.slidesharecdn.com/phoenixforlaraveldevelopers-171231152227/85/Phoenix-for-laravel-developers-42-320.jpg)
Uploaded byLuiz Messias
Phoenix for laravel developers
The document discusses a talk on functional programming and its application in building web applications using Phoenix for Laravel developers. It explores concepts like immutability, concurrency, and provides examples of coding practices in both Phoenix and Laravel environments. Additionally, it compares the two frameworks, highlighting similarities and differences in their architecture and broadcasting capabilities.
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Phoenix for laravel developers
- 1. Tony Messias Maceió DEVMeetup #21 Phoenix for Laravel developers
- 3. This is nota hands-on talk.
- 4. I'm not goingto teach you Elixir (or Phoenix) in 30~ish minutes.
- 5. I'm not sayingthat one is better than the other.
- 6. In fact, I'mactually showing that you can build shiny things with tools you already know.
- 7. This talk ina mind-map.
- 8.
- 9.
- 10. Haven't the Godsof programming decided that OOP has won this battle?
- 11. Why is functionalprogramming in such a “hype” now?
- 12. What is afunction? ● In math, functions are all about transforming input to output (sounds familiar?) ● You might be used to expressing functions in math like so: y = x * 2 or g = x ^ 2 ● But there is another notation that is much more expressive (IMO): f(x) = x * 2 f(5) = 5 * 2 f(5) = 10
- 13. f(x) = x* 2 --- const f = (x) => x * 2 var x = 5 assertEquals(f(x), 10) assertEquals(f(x), f(x)) source
- 14. class Value { constructor(val){ this.value = val; } } const f = (x) => x.value++ * 2 const x = new Value(5); console.log(f(x) == f(x)); // True or False? console.log(x.value); // What is the value?
- 15. class Value { constructor(val){ this.value = val; } } const f = (x) => x.value++ * 2 const x = new Value(5); console.log(f(x) == f(x)); // false console.log(x.value); // 7
- 16.
- 17.
- 18.
- 19.
- 20. Slack'ish in Laravel tonysm/slackish-laravel Slack'ishin Phoenix tonysm/slackish-phoenix
- 21. Elixir, the goodparts
- 22. defmodule SlackishphxWeb.CompanyController do useSlackishphxWeb, :controller plug SlackishphxWeb.Plugs.RequireAuth def create(conn, %{"company" => params}) do case Slackishphx.Auth.create_company(conn.assigns[:user], params) do {:ok, company} -> conn |> create_default_channel(company) |> switch_company(conn.assigns[:user], company) {:error, changeset} -> conn |> render("new.html", changeset: changeset) end end end
- 23. defmodule SlackishphxWeb.CompanyController do useSlackishphxWeb, :controller plug SlackishphxWeb.Plugs.RequireAuth def create(conn, %{"company" => params}) do case Slackishphx.Auth.create_company(conn.assigns[:user], params) do {:ok, company} -> conn |> create_default_channel(company) |> switch_company(conn.assigns[:user], company) {:error, changeset} -> conn |> render("new.html", changeset: changeset) end end end
- 24. defmodule SlackishphxWeb.CompanyController do useSlackishphxWeb, :controller plug SlackishphxWeb.Plugs.RequireAuth def create(conn, %{"company" => params}) do case Slackishphx.Auth.create_company(conn.assigns[:user], params) do {:ok, company} -> conn |> create_default_channel(company) |> switch_company(conn.assigns[:user], company) {:error, changeset} -> conn |> render("new.html", changeset: changeset) end end end
- 25. Phoenix, the goodparts
- 26.
- 27. Phoenix is notyour application.
- 28. slackishphx/lib ├── slackishphx │ ├──application.ex │ ├── auth │ │ ├── auth.ex │ │ ├── company.ex │ │ └── user.ex │ ├── chat │ │ ├── channel.ex │ │ └── chat.ex │ └── repo.ex ├── slackishphx.ex ├── slackishphx_web │ ├── channels │ ├── controllers │ ├── endpoint.ex │ ├── gettext.ex │ ├── plugs │ ├── router.ex │ ├── templates │ └── views └── slackishphx_web.ex
- 29. slackishphx/lib ├── slackishphx │ ├──application.ex │ ├── auth │ │ ├── auth.ex │ │ ├── company.ex │ │ └── user.ex │ ├── chat │ │ ├── channel.ex │ │ └── chat.ex │ └── repo.ex ├── slackishphx.ex ├── slackishphx_web │ ├── channels │ ├── controllers │ ├── endpoint.ex │ ├── gettext.ex │ ├── plugs │ ├── router.ex │ ├── templates │ └── views └── slackishphx_web.ex
- 30. slackishphx/lib ├── slackishphx │ ├──application.ex │ ├── auth │ │ ├── auth.ex │ │ ├── company.ex │ │ └── user.ex │ ├── chat │ │ ├── channel.ex │ │ └── chat.ex │ └── repo.ex ├── slackishphx.ex ├── slackishphx_web │ ├── channels │ ├── controllers │ ├── endpoint.ex │ ├── gettext.ex │ ├── plugs │ ├── router.ex │ ├── templates │ └── views └── slackishphx_web.ex
- 31.
- 32.
- 33.
- 34. defmodule Slackishphx.Auth.User do useEcto.Schema # ... schema "users" do field :name, :string field :email, :string field :google_id, :string field :google_token, :string field :avatar_path, :string belongs_to :current_company, Company has_many :companies, Company, foreign_key: :owner_id timestamps() end end
- 35. defmodule Slackishphx.Auth.User do #... @doc false def register_from_google_changeset(%User{} = user, attrs) do user |> cast(attrs, [:name, :email, :google_id, ...]) |> validate_required([:name, :email, ...]) end end
- 36. defmodule Slackishphx.Auth do @moduledoc""" The Auth context. """ def create_company(%User{} = user, params) do changeset = user |> build_assoc(:companies) |> Company.create_company_changeset(params) Repo.insert(changeset) end end
- 37. The not sogood parts...
- 38.
- 39.
- 40. Comparison Laravel (PHP) Phoenix (Elixir) Webapp (sessions) API(everything needs to go through HTTP) Pusher (websockets) Worker (broadcasting is delivered here) Database (sqlite) Queue Webapp (sessions) Channels (websockets) Database (sqlite)
- 41. Some similarities broadcast(new NewMessage( $request->user(), $channel, $request->input('content'), $request->input('uuid'), Carbon::now() )); broadcast!(socket,"rooms:#{room_id}:new", %{ message: message, user: user, uuid: uuid, time: DateTime.utc_now } )
- 42. Improvement points toLaravel Broadcast::channel('App.User.{id}', function ($user, $id) { return (int) $user->id === (int) $id; }); Broadcast::channel('channels.{channel}', function (AppUser $user, AppChannel $channel) { if (!$channel->exists || !$user->canJoin($channel)) { return false; } $user->joinChannel($channel); return [ 'id' => $user->id, 'name' => $user->name, 'avatar_path' => $user->avatar_path, ]; }); channel "companies:*", SlackishphxWeb.CompanyChannel channel "rooms:*", SlackishphxWeb.RoomChannel
- 43.
- 44. References ● Functional Programming;What? Why? When? (Robert C Martin) https://www.youtube.com/watch?v=7Zlp9rKHGD4 ● Real World Elixir Deployment (Pete Gamache) https://www.youtube.com/watch?v=H686MDn4Lo8 ● Erlang: The Movie https://www.youtube.com/watch?v=xrIjfIjssLE ● Lonestar ElixirConf 2017- KEYNOTE: Phoenix 1.3 by Chris McCord https://www.youtube.com/watch?v=tMO28ar0lW8 ● GOTO 2016 • Phoenix a Web Framework for the New Web • José Valim https://www.youtube.com/watch?v=bk3icU8iIto
- 45. References ● ElixirConf 2016- Giving up the Object-Oriented Ghost by Morgan Lanco https://www.youtube.com/watch?v=_VpZ6gQsyDY ● GOTO 2017 • Elixir: The only Sane Choice in an Insane World • Brian Cardarella https://www.youtube.com/watch?v=gom6nEvtl3U ● Elixir, quem é esse pokemon? - Bruno Volcov https://www.youtube.com/watch?v=aA-XHI-EYcM ● Ecto, você sabe o que é? - Amanda Sposito https://www.youtube.com/watch?v=hQM4VdEpz6g ● Programming Phoenix (book) by Chris McCord, Bruce Tate, and José Valim https://pragprog.com/book/phoenix/programming-phoenix