WIDS 2016 - Seminar Speaker - Nick Sutterer, TRB

1. THE END
OF RAILS?
@APOTONICK

2. THE ILLUSION
OF STABLE APIS
@APOTONICK

15. “Most Rails developers do not write
object-oriented Ruby code.
They write MVC-oriented Ruby code by
putting models and controllers in the
expected locations.
It takes 2-3 years before developers
realize: “Rails is just Ruby.”
-- Mike Perham

19. RAILS’
OBSESSION
WITH “MVC”

21. class User < ActiveRecord::Base
validates :name, length: 20
validates :email, format: email
validates :age, numericality: true

22. class User < ActiveRecord::Base
validates :name, length: 20
validates :email, format: email
validates :age, numericality: true
User.create(
name: “RISE!”,
email: “rise@”
age: 21
)

23. class User < ActiveRecord::Base
validates :name, length: 20
validates :email, format: email
validates :age, numericality: true

24. class User < ActiveRecord::Base
validates :name, length: 20
validates :email, format: email
validates :age, numericality: true

25. class User < ActiveRecord::Base
validates :name, length: 20
validates :email, format: email
validates :age, numericality: true
User.create(
name: “RISE! This user is by ADMIN!”,
email: “rise@”
age: 21
)

26. class User < ActiveRecord::Base
validates :name, length: 20
validates :email, format: email
validates :age, numericality: true
User.create(
name: “RISE! This user is by ADMIN!”,
email: “rise@”
age: 21
)

27. class User < ActiveRecord::Base
validates :name, length: 20,
unless: → { creator_is_admin? }
validates :email, format: email
validates :age, numericality: true
User.create(
name: “RISE! This user is by ADMIN!”,
email: “rise@”
age: 21
)

30. class User

32. defmodule User do
use Ecto.Schema
import Ecto.Changeset
schema "users" do
field :name
field :email
field :age, :integer
end
def changeset(user, params :empty) do
user
|> cast(params, ~w(name email), ~w(age))
|> validate_format(:email, ~r/@/)
|> validate_inclusion(:age, 18..100)
|> unique_constraint(:email)
end
end

34. defmodule User do
use Ecto.Schema
import Ecto.Changeset
schema "users" do
field :name
field :email
field :age, :integer
end
def changeset(user, params :empty) do
user
|> cast(params, ~w(name email), ~w(age))
|> validate_format(:email, ~r/@/)
|> validate_inclusion(:age, 18..100)
|> unique_constraint(:email)
end
end

35. defmodule User do
use Ecto.Schema
import Ecto.Changeset
schema "users" do
field :name
field :email
field :age, :integer
end
def changeset(user, params :empty) do
user
|> cast(params, ~w(name email), ~w(age))
|> validate_format(:email, ~r/@/)
|> validate_inclusion(:age, 18..100)
|> unique_constraint(:email)
end
end

36. class User

37. User
User.Admin

39. class User::Create < Trailblazer::Operation
model User
contract do
property :name
property :email
property :age, type: Integer
validates :email, format: email
validates :age, inclusion: 1..200
end
def process(params)
validate(params) do
contract.save
end
end
end

41. class User::Create < Trailblazer::Operation
model User
contract do
property :name
property :email
property :age, type: Integer
validates :email, format: email
validates :age, inclusion: 1..200
end
def process(params)
validate(params) do
contract.save
end
end
end

42. class User::Create < Trailblazer::Operation
model User
contract do
property :name
property :email
property :age, type: Integer
validates :email, format: email
validates :age, inclusion: 1..200
end
def process(params)
validate(params) do
contract.save
end
end
end

43. class User

44. User::Create
User::Create::Admin

46. APIs
MUST
CHANGE!

50. APIs
MUST
CHANGE!

51. APIs
MUST
CHANGE!INNOVATION ==

52. @APOTONICK