My CodeIgniter 2.0.0 slides from #cicon2010!

1. CodeIgniter 2.0.0
Adam Griffiths
@adam_griffiths
adamgriffiths.co.uk
adam@adamgriffiths.co.uk
bitbucket.org/adamgriffiths/

2. Who am I?
• Author of programmersvoice.com
• AG Auth - Easiest Auth Library for CI
• AG Asset - simple Asset Management Library
• Author of CodeIgniter 1.7 Professional Development

3. CodeIgniter 2.0.0
• What’s been removed
• What’s been deprecated
• What’s changed
• What’s new
• Tips for upgrading

4. What’s been removed

5. Goodbye Scaffolding
• Deprecated for a number of versions
• Wasn’t a very good implementation
• Has now been removed for CodeIgniter 2.0.0

6. Au revoir Plugins
• Removed in favour of Helpers
• Nobody was ever sure what they were for
• Plugins & Helpers were too similar
• You should update your Plugins to Helpers

7. Validation Class
• Deprecated since 1.7.0
• More powerful FormValidation Class should be used instead

8. Deprecations

9. PHP 4
• Support now dropped for PHP 4
• YAY!!
• New CI 2 features may not support PHP 4
• All legacy features will no longer support PHP 4 as of 2.1.0

10. Changes...

11. Application Directory
• How many of you move your application directory out of the
system directory?
• That won’t be an issue in CI2

12. index.php
• Configuration values can now be stored here.
• Allows a single application to have multiple front controllers
with different configuration values.
• Routing overrides now added.
• Limits your application to one controller.

13. What’s new?

14. Drivers
• New type of library
• Parent class and any number of child classes
• CI Database Library could be a Driver

15. Using Drivers
• $this->load->driver(‘driver_name’);
• $this->driver_name->method();
• $this->driver_name->subclass->subclass_method();

16. Creating a Driver

17. File Structure
application/
libraries/
driver_name/
Driver_name.php
drivers/
Driver_name_subclass_1.php
Driver_name_subclass_2.php

18. File Structure
application/
libraries/
driver_name/
Driver_name.php
drivers/
Driver_name_subclass_1.php
Driver_name_subclass_2.php

19. File Structure
application/
libraries/
driver_name/
Driver_name.php
drivers/
Driver_name_subclass_1.php
Driver_name_subclass_2.php

20. File Structure
application/
libraries/
driver_name/
Driver_name.php
drivers/
Driver_name_subclass_1.php
Driver_name_subclass_2.php

21. File Structure
application/
libraries/
driver_name/
Driver_name.php
drivers/
Driver_name_subclass_1.php
Driver_name_subclass_2.php

22. File Structure
application/
libraries/
driver_name/
Driver_name.php
drivers/
Driver_name_subclass_1.php
Driver_name_subclass_2.php

23. File Structure
application/
libraries/
driver_name/
Driver_name.php
drivers/
Driver_name_subclass_1.php
Driver_name_subclass_2.php

24. File Structure
application/
libraries/
driver_name/
Driver_name.php
drivers/
Driver_name_subclass_1.php
Driver_name_subclass_2.php

25. Parser File Structure
application/
libraries/
Parser/
Parser.php
drivers/
Parser_dwoo.php
Parser_smarty.php

26. Parser File Structure
application/
libraries/
Parser/
Parser.php
drivers/
Parser_dwoo.php
Parser_smarty.php

27. Parser File Structure
application/
libraries/
Parser/
Parser.php
drivers/
Parser_dwoo.php
Parser_smarty.php

28. Parser File Structure
application/
libraries/
Parser/
Parser.php
drivers/
Parser_dwoo.php
Parser_smarty.php

29. Parser File Structure
application/
libraries/
Parser/
Parser.php
drivers/
Parser_dwoo.php
Parser_smarty.php

30. Parser File Structure
application/
libraries/
Parser/
Parser.php
drivers/
Parser_dwoo.php
Parser_smarty.php

31. Parser.php Class
<?php
class Parser extends CI_Driver_Library {
} // class
?>

32. Parser.php Class
<?php
class Parser extends CI_Driver_Library {
} // class
?>

33. Parser.php Class
<?php
class Parser extends CI_Driver_Library {
} // class
?>

34. <?php
class Parser extends CI_Driver_Library {
function __construct() {
$this->valid_drivers = array('parser_dwoo',
‘parser_smarty’);
} // _construct()
} // class
?>

35. function __construct() {
$this->valid_drivers = array('parser_dwoo',
‘parser_smarty’);
} // _construct()

36. Parser_dwoo.php Class
<?php
class Parser_dwoo extends CI_Driver {
} // class
?>

37. Parser_dwoo.php Class
<?php
class Parser_dwoo extends CI_Driver {
} // class
?>

38. Parser_dwoo.php Class
<?php
class Parser_dwoo extends CI_Driver {
} // class
?>

39. Packages
• Allows for easy distribution of resources in a single directory.
• Can have it’s own library files, models, config files etc.
• Placed in application/third_party
• MojoMotor addons are packages

40. Creating a Package

41. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

42. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

43. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

44. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

45. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

46. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

47. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

48. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

49. Package File Structure
application/
third_party/
package_name/
config/
helpers/
language/
libraries/
models/

50. Add Package Path
• Before you can load a package, you need to tell the Loader
where to look for it.
• $this->load-
>add_package_path(APPPATH.'third_party/package_name/');
• $this->load->library(‘package_name’);

51. Remove Package Path
• When finished using a Packages resources.
• When you want to use multiple Packages.
• $this->load-
>remove_package_path(APPPATH.'third_party/package_nam
e/');

52. PackageView Files
• Disclaimer: not finished
• Save the original view path
• Set the view path to that of the Package
• Load views, etc
• Set the path back to the original

53. // ... save the original view path, and set to our package view folder
$orig_view_path = $this->load->_ci_view_path;$this->load->_ci_view_path = APPPATH.'third_party/package_name/views/';// ... code using the package's view files// ... then return the view path to the application's original view path$this->load->_ci_view_path = $orig_view_path;
$orig_view_path = $this->load->_ci_view_path;$this->load->_ci_view_path = APPPATH.'third_party/package_name/views/';// ... code using the package's view files// ... then return the view path to the application's original view path$this->load->_ci_view_path = $orig_view_path;
$orig_view_path = $this->load->_ci_view_path;$this->load->_ci_view_path = APPPATH.'third_party/package_name/views/';// ... code using the package's view files// ... then return the view path to the application's original view path$this->load->_ci_view_path = $orig_view_path;

54. Mercurial/BitBucket
• In development code is now hosted on BitBucket
• Easier to get *your* code in the CI core
• Allows community to help squish bugs
• No SVN!! (Sorry but I really do hate Subversion)

55. Quick and Dirty Mercurial
Tutorial

56. The Basics
• hg init
• hg pull <url>
• hg pull <constant>
• hg pull <path/to/local/repo>
• hg update

57. Continued...
• hg diff
• hg add .
• hg add <path/to/file>
• hg commit -m “Commit Message”
• hg push <url>
• hg push <constant>

58. .hgrc file
• mate $HOME/.hgrc
• [paths]
• ci_master = http://bitbucket.org/ellislab/codeigniter/

59. Upgrading Tips

60. Upgrading your Models
• CodeIgniter 1.7.2 Models extend Model
• CodeIgniter 2.0.0 Models extend CI_Model

61. Lazy mans Model Upgrade
• Create a new Library file: MY_Model.php
<?php
class Model extends CI_Model
{
function __construct()
{
parent::__construct();
} // construct()
} // class
?>

62. Lazy mans Model Upgrade
• Create a new Library file: MY_Model.php
<?php
class Model extends CI_Model
{
function __construct()
{
parent::__construct();
} // construct()
} // class
?>

63. Lazy mans Model Upgrade
• Create a new Library file: MY_Model.php
<?php
class Model extends CI_Model
{
function __construct()
{
parent::__construct();
} // construct()
} // class
?>

64. Lazy mans Model Upgrade
• Create a new Library file: MY_Model.php
<?php
class Model extends CI_Model
{
function __construct()
{
parent::__construct();
} // construct()
} // class
?>

65. Controllers
• Controllers are currently unchanged
• Ellis Lab are evaluating changing the Controller class from
Controller to CI_Controller

66. Lazy mans Controller Upgrade
• Create a new Library file: MY_Controller.php
<?php
class Controller extends CI_Controller
{
function __construct()
{
parent::__construct();
} // construct()
} // class
?>

67. Lazy mans Controller Upgrade
• Create a new Library file: MY_Controller.php
<?php
class Controller extends CI_Controller
{
function __construct()
{
parent::__construct();
} // construct()
} // class
?>

68. Lazy mans Controller Upgrade
• Create a new Library file: MY_Controller.php
<?php
class Controller extends CI_Controller
{
function __construct()
{
parent::__construct();
} // construct()
} // class
?>

69. Lazy mans Controller Upgrade
• Create a new Library file: MY_Controller.php
<?php
class Controller extends CI_Controller
{
function __construct()
{
parent::__construct();
} // construct()
} // class
?>

70. Summary
• Plugins,Validation Library & Scaffolding have been removed
• PHP 4 support dropped
• Drivers & Packages
• Model Class renamed
• Mercurial/Bitbucket

71. Q & A
• @adam_griffiths
• Skype: adam-griffiths
• adam@adamgriffiths.co.uk
• www.adamgriffiths.co.uk
• www.bitbucket.org/adamgriffiths/