This document summarizes a London Yii Meetup event hosted by Cass Surek. The meetup will include an overview of Yii 2.0 by Cass and a presentation on the Yii 2.0 Smart Blog add-on by Marian Zburlea. Major changes in Yii 2.0 include namespaces, components and objects, events, path aliases, views, models, controllers, widgets, console applications, internationalization, and action filters.

1. Welcome to the
London Yii Meetup
Hosted by Cass Surek – monthly meetings
http://www.meetup.com/London-Yii-Framework-Group/

2. Venue, beer and snacks kindly provided by
www.digitalannexe.co.uk

3. Tonight
Yii 2.0 overview – Cass
Yii 2.0 add-on – Marian Zburlea

4. Yii 2.0
Current version 2.0.0 alpha
Based on PHP 5.4.0
Incompatible with 1.1
Not yet ready for production
Application templates (basic and advanced)
Installation via Composer

5. Major changes
Namespaces
Component and
Objects
Events
Path Alias
View Class
Models
Controllers
Widgets
Console Applications
i18N
Action Filters
Assets
Static Helpers
ActiveForm
Query Builder
ActiveRecord
Auto-quoting table and
column names
User and
identityInterface
URL Management
Themes
Composer integration

6. Namespaces
• Prefixes no longer used
• Based on directory structure
e.g. yiiwebRequest

7. Components and Objects
• CComponent split into Object and
Component
• Object – basic data structures
• Component – events/behaviour

8. Object Config
• Uniform way of configuring objects

9. Object Config

10. Events
• onEvent method definition no longer
needed
• $component->on($eventName, $handler);

11. Path Alias
• Must use @
• @yii means Yii installation directory
• Closely related to class namespaces

12. View Class
• MVC
• $this in a view no longer means controller or
widget object
• Smarty and Twig support added
• Prado support removed

13. Models
• formName() returns the form name (previously
hardcoded)
• Load() and loadMultiple() added to aid data
population
• New method: scenarios() to define which fields
need to be validated
• Safe validators discontinued, scenarios() define
which are safe

14. Controllers
• Render() and renderPartial() return content
instead of sending it out
• One must echo contents now

15. Widgets
• Simplified process
• Use begin(), end() and widget() instead of
passing strings through beginWidget() and
endWidget().

16. Themes
•
•
•
•
CThemeManager is gone
Path maps
['/web/views' => '/web/themes/basic’]
/web/views/site/index.php will be
/web/themes/basic/site/index.php
• Any view file can have a theme, even if
rendered outside of the context of a controller

17. Console applications
• Controllers
• Console and web controllers have same base
class
• Console controller is similar to
CConsoleCommand

18. Internationalisation (i18n)
• Date and number formatter are out
• PECL intl php module is in
• I18n application component

19. Action Filters
• Implemented via behaviors now

20. Marian Zburlea
Yii 2.0 Add-on
Yii Smart Blog