Yii 2.0 includes several new features such as Composer support, PSR compliance, namespaces, anonymous functions, and traits. It also features changes from Yii 1.1 like removing prefixes for namespaces, simplifying events, widgets, and themes. Additionally, ActiveRecord and query builder were updated with new methods and classes.

1. Peter J. Kambey – Yii Enthusiasm
HIGH PERFORMANCE
&
BEST FEATURES YII-2

2. About Me
http://about.me/peterjkambey

3. What’s New Yii-2
⦿ Composer
⦿ PSR Compliance. Autoloading
⦿ PHP 5.4 or above
▪ Namespaces.
▪ Anonymous functions.
▪ Short array syntax.
▪ Short echo tags <?= are used in view files.
▪ SPL classes and interfaces.
▪ Late Static Bindings.
▪ Date and Time.
▪ Traits.
▪ intl.

4. A. Non Yii Users / New
Comers

5. http://www.yiiframework.com/doc-2.0/guide-index.html

6. What is Yii

7. What is Yii Best for?

8. Yii vs Other Frameworks?
• MVC (Model-View-Controller)
• Design pattern
• Full-stack framework with ready-to-use features:
query builders and ActiveRecord for both relational and NoSQL databases;
RESTful API development support;
multi-tier caching support;
and more.
• Extremely extensible.
• High performance is always a primary goal of Yii.
• Backed up by a strong core developer team, as well as a large community of
professionals constantly contributing to Yii's development.

9. Personal Opinion

10. B. Yii Users

11. Namespaces
⦿ Prefixes no longer used
⦿ Based on directory structure
e.g. yiiwebRequest

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

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

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

15. 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

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

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

18. 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

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

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

21. ActiveForm
⦿ Field: label, input, error message and
hint text

22. Query Builder
⦿ CDbCommand, CDbCriteria,
CDbCommandBuilder
⦿ yiidbQuery|Query = DB
⦿ yiidbQueryBuilder|QueryBuilder =
Query

23. Active Record
⦿ yiidbActiveRecord|ActiveRecord
⦿ Relational AR Query
⦿ 1.1 = relations()
⦿ 2.0 = getter methods

24. Active Record
⦿ No longer uses model(), but uses the
find method:

25. User and IdentityInterface
⦿ CWebuser is now yiiwebUser
⦿ CUserIdentity is no more
⦿ yiiwebIdentityInterface

26. URL Management
⦿ Optional parameters are now supported

27. ⦿ Installing Yii
⦿ Generating Code with Gii
⦿ Handling Errors
⦿ Logging
⦿ Query Builder
⦿ Active Record
⦿ Migrations
⦿ Sphinx
⦿ Redis
⦿ MongoDB
⦿ ElasticSearch
⦿ Security
⦿ Caching
⦿ RESTful Web Services
⦿ Development Tools
⦿ Testing
Yii 2.0 Keys Success
⦿ Advanced Application Template
⦿ Console Commands
⦿ Core Validators
⦿ Internationalization
⦿ Mailing
⦿ Template Engines
⦿ Working with Third-Party Code
⦿ GridView
⦿ ListView
⦿ DetailView
⦿ Pjax
⦿ Menu
⦿ LinkPager
⦿ LinkSorter
⦿ Bootstrap Widgets
⦿ Jquery UI Widgets