Who Needs Ruby When You've Got CodeIgniter?

Transcript

1. WHO  NEEDS  RUBY  WHEN   YOU’VE  GOT  CODEIGNITER? Jamie  Rumbelow

     @jamierumbelow CodeIgniter Conference, London, 2012

2. HI,  I’M  JAMIE

3. PLUG:

4. None

5. codeigniterhandbook.com

6. None

7. SORRY  CODEIGNITER,   I’VE  GOT  ANOTHER  GIRL

8. BUT  I  STILL  —  YOU

9. CODEIGNITER  IS  MY  WIFE, RAILS  IS  MY  MISTRESS

10. RAILS  DEVELOPERS?

11. SMUG.

12. IN  REALITY, RAILS  DEVS  ARE  RINGOS

13. None

14. “Totally  the  hot  shit”

15. BOLLOCKS!

16. RUBY

17. NOPE!

18. IT’S  ALL  ABOUT   THE  CONCEPTS

19. FLEXIBILITY

20. None

21. OTHER  FRAMEWORKS COPY

22. CODEIGNITER ADAPTS

23. WHAT  CONCEPTS?

24. CONVENTION > CONFIGURATION

25. DON’T REPEAT YOURSELF

26. A  DAY  IN  THE  LIFE

27. MVC

28. MVC

29. IT’S  ALL  ABOUT THE  DATA

30. IT’S  ALL  ABOUT *PROCESSING  THE  DATA

31. FAT M  O  D  E  L SKINNY CONTROLLER

32. MY_Model

33. public function get($where) { return $this->db->where($where) ->get($this->_table); }

34. PLURAL  TABLE  NAME

35. $this->_table = strtolower(plural(str_replace('_model', '', get_class())));

36. Text class User_model extends MY_Model { } class Post_model extends

    MY_Model { } class Category_model extends MY_Model { }

37. OBSERVERS

38. class User_model extends MY_Model { public $before_create = array( 'hash_password'

    ); }

39. foreach ($this->before_create as $method) { $data = call_user_func_array(array($this, $method), array($data));

    }

40. public function hash_password($user) { $user['password'] = sha1($user['password']); return $user; }

41. SCOPES

42. return $this;

43. public function confirmed() { $this->db->where('confirmed', TRUE); return $this; }

44. $this->user->confirmed()->get_all();

45. VALIDATION

46. YOU’RE DOING IT WRONG

47. class User_model extends MY_Model { public $validate = array( array(

    'field' => 'username', 'label' => 'Username', 'rules' => 'required|max_length[20]|alpha_dash' ), array( 'field' => 'password', 'label' => 'Password', 'rules' => 'required|min_length[8]' ), array( 'field' => 'email', 'label' => 'Email', 'rules' => 'valid_email' ) ); }

48. foreach ($data as $key => $value) { $_POST[$key] = $value;

    }

49. $this->form_validation->set_rules($this->validate); return $this->form_validation->run();

50. MVC

51. PRESENTERS

52. <div id="account"> <h1> <?= $this->bank->get($account->bank_id)->name ?> - <?= $account->title ?>

    </h1> <p class="information"> <strong>Name:</strong> <?php if ($account->name): ?><?= $account->name ?><?php else: ?>N/A<?php endif; ?><br /> <strong>Number:</strong> <?php if ($account->number): ?><?= $account->number ? ><?php else: ?>N/A<?php endif; ?><br /> <strong>Sort Code:</strong> <?php if ($account->sort_code): ?><?= substr($account->sort_code, 0, 2) . "-" . substr($account->sort_code, 2, 2) . "-" . substr($account->sort_code, 4, 2) ?><?php else: ?>N/A<?php endif; ?> </p> <p class="balances"> <strong>Total Balance:</strong> <?php if ($account->total_balance): ?><?= "&pound;" . number_format($account->total_balance) ?><?php else: ?>N/A<?php endif; ?> <strong>Available Balance:</strong> <?php if ($account->available_balance): ? ><?= "&pound;" . number_format($account->available_balance) ?><?php else: ?>N/A<?php endif; ?> </p> <p class="statements"> <?php if ($this->statements->count_by('account_id', $account->id)): ?> <?= anchor('/statements/' . $account->id, 'View Statements') ?> <?php else: ?> Statements Not Currently Available <?php endif; ?> </p> </div>

53. <div id="account"> <h1> <?= $account->title() ?> </h1> <p class="information"> <strong>Name:</strong>

    <?= $account->name() ?><br /> <strong>Number:</strong> <?= $account->number() ?><br /> <strong>Sort Code:</strong> <?= $account->sort_code() ?> </p> <p class="balances"> <strong>Total Balance:</strong> <?= $account->total_balance() ?> <strong>Available Balance:</strong> <?= $account->available_balance() ?> </p> <p class="statements"> <?= $account->statements_link() ?> </p> </div>

54. ENCAPSULATE THE  CLASS

55. class Account_presenter { public function __construct($account) { $this->account = $account;

    } }

56. public function title() { return get_instance()->bank->get($this->account->bank_id)->name . "-" . $this->account->title;

    }

57. GETTING  BETTER

58. public function number() { return $this->account->number ?: "N/A"; }

59. <div id="account"> <h1> <?= $this->bank->get($account->bank_id)->name ?> - <?= $account->title ?>

    </h1> <p class="information"> <strong>Name:</strong> <?php if ($account->name): ?><?= $account->name ?><?php else: ?>N/A<?php endif; ?><br /> <strong>Number:</strong> <?php if ($account->number): ?><?= $account->number ? ><?php else: ?>N/A<?php endif; ?><br /> <strong>Sort Code:</strong> <?php if ($account->sort_code): ?><?= substr($account->sort_code, 0, 2) . "-" . substr($account->sort_code, 2, 2) . "-" . substr($account->sort_code, 4, 2) ?><?php else: ?>N/A<?php endif; ?> </p> <p class="balances"> <strong>Total Balance:</strong> <?php if ($account->total_balance): ?><?= "&pound;" . number_format($account->total_balance) ?><?php else: ?>N/A<?php endif; ?> <strong>Available Balance:</strong> <?php if ($account->available_balance): ? ><?= "&pound;" . number_format($account->available_balance) ?><?php else: ?>N/A<?php endif; ?> </p> <p class="statements"> <?php if ($this->statements->count_by('account_id', $account->id)): ?> <?= anchor('/statements/' . $account->id, 'View Statements') ?> <?php else: ?> Statements Not Currently Available <?php endif; ?> </p> </div>

60. <div id="account"> <h1> <?= $account->title() ?> </h1> <p class="information"> <strong>Name:</strong>

    <?= $account->name() ?><br /> <strong>Number:</strong> <?= $account->number() ?><br /> <strong>Sort Code:</strong> <?= $account->sort_code() ?> </p> <p class="balances"> <strong>Total Balance:</strong> <?= $account->total_balance() ?> <strong>Available Balance:</strong> <?= $account->available_balance() ?> </p> <p class="statements"> <?= $account->statements_link() ?> </p> </div>

61. MVC

62. AUTOLOADING

63. application/views/controller/action.php

64. application/views/controller/action.php

65. application/views/controller/action.php

66. application/views/posts/action.php

67. application/views/posts/index.php

68. Posts::index(); application/views/posts/index.php

69. Posts::create(); application/views/posts/create.php

70. Comments::submit_spam(); application/views/comments/submit_spam.php

71. MY_Controller

72. _remap()

73. $view = strtolower(get_class($this)) . '/' . $method;

74. $view = strtolower(get_class($this)) . '/' . $method;

75. $view = strtolower(get_class($this)) . '/' . $method;

76. $this->load->view($view, $this->data);

77. public function index() { $this->data['users'] = $this->user->get_all(); $this->data['title'] = 'All

    Users'; }

78. HELP!

79. $this->load->view('shared/_header', $data); $this->load->view('users/all', $data); $this->load->view('shared/_footer', $data);

80. $this->data['yield'] = $this->load->view($view, $this->data, TRUE); $this->load->view('layouts/application', $this->data);

81. <header> <h1>My Application</h1> </header> <div id="wrapper"> <?= $yield ?> </div>

    <footer> <p>Copyright &copy; 2012</p> </footer>

82. THE  END

83. Jamie  Rumbelow   @jamierumbelow jamieonsoftware.com The  CodeIgniter  Handbook codeigniterhandbook.com