Rails as a Backend for Mobile Applications

Transcript

1. RAILS AS A BACKEND FOR MOBILE APPLICATIONS Mike Bradford Lone

   Star Ruby Conference - Friday, August 10, 2012

2. Topics to Cover

3. Topics to Cover Rails API Setup

4. Topics to Cover Security & Authentication Rails API Setup

5. Topics to Cover Security & Authentication Versioning Rails API Setup

6. Topics to Cover Security & Authentication Versioning Testing Rails API

   Setup
7. None

8. MyFitLog

9. None

10. No Assets

11. No Assets No JavaScript

12. No Assets No JavaScript RSpec

13. No Assets No JavaScript RSpec JBuilder

14. No Assets No JavaScript RSpec JBuilder Rails’ Built-in Authentication

15. No Assets No JavaScript RSpec JBuilder Rails’ Built-in Authentication No

    HTML

16. No Assets No JavaScript RSpec JBuilder Rails’ Built-in Authentication No

    HTML REST API

17. No Assets No JavaScript RSpec JBuilder Rails’ Built-in Authentication No

    HTML REST API Custom Route Constraints

18. No Assets No JavaScript RSpec JBuilder Rails’ Built-in Authentication No

    HTML REST API Custom Route Constraints Custom Rack Responder
19. None

20. validation Local data store ORM

21. Request Headers JSON Body validation Local data store ORM

22. Request Headers JSON Body validation Local data store ORM validation

    Database Model

23. Status Code Response Headers JSON Body Request Headers JSON Body

    validation Local data store ORM validation Database Model

24. $ rails new my_fit_log -S -J -T $ cd my_fit_log

    $ rm -rf app/assets vendor/assets app/views/layouts
25. None
26. None
27. None
28. None

29. $ rails generate model User name email password_digest api_key $

30. $ rails generate model User name email password_digest api_key $

    rails generate model Exercise user_id:integer name instructions $

31. $ rails generate model User name email password_digest api_key $

    rails generate model Exercise user_id:integer name instructions $ rails generate model Workout user_id:integer \ completed_at:timestamp summary $

32. $ rails generate model User name email password_digest api_key $

    rails generate model Exercise user_id:integer name instructions $ rails generate model Workout user_id:integer \ completed_at:timestamp summary $ rails generate model Routine workout_id:integer \ exercise_id:integer sets:integer reps:integer

33. Versioning Version 1 Version 2

34. Versioning Version 1 Version 2 sign in with URL query

    params

35. Versioning Version 1 Version 2 sign in with URL query

    params HTTP authentication

36. Versioning Version 1 Version 2 sign in with URL query

    params HTTP authentication api key as URL parameter

37. Versioning Version 1 Version 2 sign in with URL query

    params HTTP authentication api key as URL parameter HTTP From Header

38. Versioning Version 1 Version 2 sign in with URL query

    params HTTP authentication api key as URL parameter HTTP From Header Enforce additional HTTP request headers

39. http://localhost:3000/api/v1/user.json

40. http://localhost:3000/user.json Accept: application/vnd.my_fit_log.v2

41. None

42. Api::V2::UsersController

43. Api::V2::UsersController

44. None

45. Api::V2::UsersController

46. Api::V2::UsersController

47. $ rails g controller api/v1/sessions create --no-assets --no-helper create app/controllers/api/v1/sessions_controller.rb

    route get "sessions/create" invoke erb create app/views/api/v1/sessions create app/views/api/v1/sessions/create.html.erb $ mv app/views/api/v1/sessions/create.html.erb \ app/views/api/v1/sessions/create.json.jbuilder $ rails g controller api/v2/sessions create --no-assets --no-helper

48. $ rails g controller api/v1/users create update --no-assets \ --no-helper

    $ rails g controller api/v2/users create update --no-assets \ --no-helper $ rails g controller api/v1/exercises index create show update \ destroy --no-assets --no-helper $ rails g controller api/v2/exercises index create show update \ destroy --no-assets --no-helper $ rails g controller api/v1/workouts index create show update \ destroy --no-assets --no-helper $ rails g controller api/v2/workouts index create show update \ destroy --no-assets --no-helper $ rails g controller api/v1/routines index create show update \ destroy --no-assets --no-helper $ rails g controller api/v2/routines index create show update \ destroy --no-assets --no-helper
49. None
50. None
51. None

52. Api::AppliationController

53. None
54. None
55. None
56. None
57. None
58. None

59. app/views/api/v2/workouts/index.json.jbuilder

60. app/views/api/v2/workouts/show.json.jbuilder

61. app/views/api/v2/workouts/_workout.json.jbuilder

62. app/views/api/v2/routines/_routine.json.jbuilder

63. Automated Testing

64. None
65. None
66. None
67. None
68. None
69. None
70. None

71. Manual Testing

72. $ curl -H 'Content-Type: application/json' -H 'User-Agent: MyFitLog iOS' \

    -H 'Accept: application/vnd.my_fit_log.v2' -X POST \ -d '{"email":"[email protected]", "password":"secret", \ "password_confirmation":"secret"}' http://localhost:3000/user.json Curl

73. Device Simulator

74. Questions?

75. https://github.com/47primes/my_fit_log https://github.com/47primes/MyFitLogiOS @mrmikebradford