Views and Controllers, Forms

Good practices on how to organize business logic.

Rubizza camp.

Transcript

1. Views and Controllers, Forms with ♥ from datarockets
2. Views and Controllers, Forms with ♥ from datarockets
5. Rails with ♥ from datarockets The Good Parts Intro
7. https://www.instagram.com/teamup.ninja/
9. RAILS MVC
10. Skinny Models Skinny Controllers Fat Services https://medium.com/the-falconry/skinny-models-skin ny-controllers-fat-services-e04cfe2d6ae
11. Skinny Models Skinny Controllers Skinny Services https://medium.com/the-falconry/skinny-models-skin ny-controllers-fat-services-e04cfe2d6ae
12. https://www.youtube.com/watch?v=LUJiEA88a3U
14. Rails with ♥ from datarockets Tips
15. • namespaces • RESTful routes (only CRUD routes)
16. 1. Getter or helpers = "#{user.first_name} #{second_name}"
17. 1. Getter or helpers = "#{user.first_name} #{second_name}" = user.first_name.present? || user.second_name.present? ? "#{user.first_name} #{second_name}" : user.email
18. 1. Getter or helpers = "#{user.first_name} #{second_name}" = user.first_name.present? || user.second_name.present? ? "#{user.first_name} #{second_name}" : user.email class User < ApplicationRecord def full_name "#{first_name} #{second_name}" end def shown_username full_name.present? ? full_name : email end end
19. 1. Getter or helpers = user.full_name = user.shown_name class User < ApplicationRecord def full_name "#{first_name} #{second_name}" end def shown_username full_name.present? ? full_name : email end end
20. 1. Getter or helpers = user.full_name = user.shown_name class User < ApplicationRecord def full_name "#{first_name} #{second_name}" end def shown_username full_name.present? ? full_name : email end end
21. 1. Getter or helpers = "#{user.first_name} #{second_name}" = user.first_name.present? || user.second_name.present? ? "#{user.first_name} #{second_name}" : user.email module UsersHelpers def user_full_name(user) "#{user.first_name} #{user.second_name}" end def user_shown_username(user) full_name = user_full_name(user) full_name.present? ? full_name : user.email end end
22. 1. Getter or helpers = user_full_name(user) = user_shown_username(user) module UsersHelpers def user_full_name(user) "#{user.first_name} #{user.second_name}" end def_user_shown_username_with_some_additional_params_for_also_showing_pr oposal_tension_and_comments_of_other_users_bla_bla_bla(user, commeted_users, data, ...) ... end
23. 1. Getter or helpers = "#{user.first_name} #{second_name}" = user.first_name.present? || user.second_name.present? ? "#{user.first_name} #{second_name}" : user.email https://github.com/drapergem/draper
24. 1. Getter or helpers = user.full_name = user.shown_name class UserDecorator < Draper::Decorator def full_name "#{first_name} #{second_name}" end def shown_username full_name.present? ? full_name : email end end https://github.com/drapergem/draper
25. 1. Getter or helpers = "#{user.first_name} #{second_name}" = user.first_name.present? || user.second_name.present? ? "#{user.first_name} #{second_name}" : user.email http://nithinbekal.com/posts/rails-presenters/
26. 1. Getter or helpers = user_page_presenter.full_name = user_page_presenter.shown_name class UserPagePresenter < Struct.new(:user, …) def full_name "#{user.first_name} #{user.second_name}" end def shown_username full_name.present? ? full_name : user.email end end
27. 1. Getter or helpers View models http://trailblazer.to/gems/cells/
28. 1. Getter or helpers View models https://datarockets.com/blog/object-oriented-views-in-rails
29. 2. Services • https://hackernoon.com/service-objects-in-ruby-on-rails-and-you-79ca8a1c94 6e • https://medium.com/selleo/essential-rubyonrails-patterns-part-1-service-object s-1af9f9573ca1 • https://jacopretorius.net/2017/09/how-and-why-to-use-service-objects-in-rails. html
30. 2. Services app/controller/users_controller.rb def create user = User.new(user_params) if user.valid? user.save redirect_to user_path(user) else render :new end end
31. 2. Services app/controller/users_controller.rb def create user = User.new(user_params) if user.valid? user.save UserMailer.send_hello(user).deliver_later redirect_to user_path(user) else render :new end end
32. 2. Services app/controller/users_controller.rb def create user = User.new(user_params) if user.valid? user.save redirect_to user_path(user) else render :new end end app/models/user.rb class User < ApplicationRecord after_create do UserMailer.send_hello(user) .deliver_later end end https://medium.com/planet-arkency/the-biggest-rails-code-smell-you-should-avoid- to-keep-your-app-healthy-a61fd75ab2d3
33. 2. Services app/controller/users_controller.rb def create user = User.new(user_params) if user.valid? user.save redirect_to user_path(user) else render :new end end app/models/user.rb class User < ApplicationRecord after_create do UserMailer.send_hello(user) .deliver_later end end https://medium.com/planet-arkency/the-biggest-rails-code-smell-you-should-avoid- to-keep-your-app-healthy-a61fd75ab2d3
34. 2. Services app/controller/users_controller.rb def create user = User.new(user_params) if user.valid? user.transaction do user.save user.create_team(team_params) end UserMailer.send_hello(user).deliver_later redirect_to user_path(user) else render :new end end
35. 2. Services app/controller/users_controller.rb def create user = User.new(user_params) if user.valid? CreateUserService.new(user).call redirect_to user_path(user) else render :new end end app/services/create_user_service.rb class CreateUserService < Struct.new(:user) def call user.transaction do user.save user.create_team(team_params) end send_notification end private def send_notification UserMailer.send_hello(user).deliver_later end end
36. 2. Services app/controller/users_controller.rb def create result = CreateUserService .new(user_params) .call if result.success? redirect_to user_path(result.object) else @user = result.object render :new end end app/services/create_user_service.rb class CreateUserService < Struct.new(:user_params) def call if user.valid? create_user SuccessResult(object: user) else ErrorResult.new(object: user) end private def user @_user || User.new(user_params) end end
37. 2. Services • https://medium.com/rubyinside/forget-conditionals-use-the-rail-way-c4e98b4e 7a13 • https://medium.com/@apneadiving/chain-service-objects-like-a-boss-35d0b83 606ab • http://trailblazer.to/gems/operation/2.0/
38. 3. Forms Helpers https://github.com/plataformatec/simple_form
39. 4. Form Objects Not today https://medium.com/selleo/essential-rubyonrails-patterns-form-objects-b199aa da6ec9
40. Some more posts • https://medium.com/@blazejkosmowski/essential-rubyonrails-patterns-part-2- query-objects-4b253f4f4539 • https://medium.com/selleo/essential-rubyonrails-patterns-clients-and-wrapper s-c19320bcda0
41. Questions??? with ♥ from datarockets
42. with ♥ from datarockets