1. WHO NEEDS RUBY WHEN YOU’VE
GOT CODEIGNITER?
Jamie Rumbelow
@jamierumbelow
CodeIgniter Conference, London, 2012

2. HI, I’M JAMIE

3. PLUG:

5. codeigniterhandbook.com

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. “Totally the hot shit”

14. BOLLOCKS!

15. RUBY

16. NOPE!

17. IT’S ALL ABOUT
THE CONCEPTS

18. FLEXIBILITY

20. OTHER FRAMEWORKS
COPY

21. CODEIGNITER
ADAPTS

22. WHAT CONCEPTS?

23. CONVENTION
>
CONFIGURATION

24. DON’T
REPEAT
YOURSELF

25. A DAY IN THE LIFE

26. MVC

27. MVC

28. IT’S ALL ABOUT
THE DATA

29. IT’S ALL ABOUT
*PROCESSING THE DATA

30. FAT
MODEL
SKINNY
CONTROLLER

31. MY_Model

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

33. PLURAL TABLE NAME

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

35. class User_model extends MY_Model { }
Text
class Post_model extends MY_Model { }
class Category_model extends MY_Model { }

36. OBSERVERS

37. class User_model extends MY_Model
{
public $before_create = array( 'hash_password' );
}

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

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

40. SCOPES

41. return $this;

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

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

44. VALIDATION

45. YOU’RE
DOING
IT
WRONG

46. 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' )
);
}

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

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

49. MVC

50. PRESENTERS

51. <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>

52. <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>

53. ENCAPSULATE
THE CLASS

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

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

56. GETTING BETTER

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

58. <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>

59. <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>

60. MVC

61. AUTOLOADING

62. application/views/controller/action.php

63. application/views/controller/action.php

64. application/views/controller/action.php

65. application/views/posts/action.php

66. application/views/posts/index.php

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

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

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

70. MY_Controller

71. _remap()

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

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

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

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

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

77. HELP!

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

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

80. <header>
<h1>My Application</h1>
</header>
<div id="wrapper">
<?= $yield ?>
</div>
<footer>
<p>Copyright &copy; 2012</p>
</footer>

81. THE END

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