T3DD09: Hitchhiker’s Guide to FLOW3

Hitchhiker's Guide to FLOW3
T3DD09, Elmshorn, Germany

Mittwoch, 20. Mai 2009

The History of FLOW3
(short version)


33

500.000

300.000

The FLOW3 experience
Flow [fl!] The mental state of operation in which the person is fully immersed in
what he or she is doing by a feeling of energized focus, full involvement, and
success in the process of the activity. Proposed by positive psychologist Mihály
Csíkszentmihályi , the concept has been widely referenced across a variety of
ﬁelds.

FLOW3 [fl!'three] The application framework which takes care of all hassle and lets
you play the fun part.

Hitchhiker's Guide to FLOW3 Inspiring people to
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The FLOW3 experience
Flow [fl!] The mental state of operation in which the person is fully immersed in
what he or she is doing by a feeling of energized focus, full involvement, and
success in the process of the activity. Proposed by positive psychologist Mihály
Csíkszentmihályi , the concept has been widely referenced across a variety of
ﬁelds.

FLOW3 [fl!'three] The application framework which takes care of all hassle and lets
you play the fun part.

["miha#j t$i#
k"s%ntmiha#j
i]

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FLOW3 = Application Framework
Not just a collection of components or code snippet library

Comes with ready-to-go default conﬁguration

Package based

Tailored to Domain-Driven Design

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Get the FLOW experience
Intuitive APIs

Readable source code (like a book)

Consistent naming for classes, methods and properties

Focus on the essential, the framework takes care of the infrastructure

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TYPO3 and FLOW3
FLOW3 acts as a reliable basis for any kind of web application

TYPO3 v5 is a package based on FLOW3

TYPO3 extensions are packages as well, all based on FLOW3

Packages can be used

as extensions for TYPO3

as libraries for standalone applications

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FLOW3 sub packages
AOP Log Reﬂection

Component Monitor Resource

Conﬁguration MVC Session

Cache Object SignalSlot

Error Package Validation

Locale Persistence ... and more

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Getting Started

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Getting Started

Requirements
Some webserver (tested with Apache and IIS)

PHP 5.3RC1 or higher (see http://snaps.php.net/)

PHP extensions: zlib, PDO and PDO SQLite and the usual stuff

Some database (tested with SQLite, MySQL and Postgres)

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Getting Started

Download
Currently available through Subversion

Checkout the FLOW3 Distribution:
svn co https://svn.typo3.org/FLOW3/distribution/trunk

or try the TYPO3 Distribution:
svn co https://svn.typo3.org/TYPO3v5/distribution/trunk

Nightly builds will follow as soon

FLOW3 1.0 alpha 1 release on June 1st

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Getting Started

Grant File Permissions
The webserver needs

read access for all ﬁles of the distribution and

write access in the Public and Data directory

On Linux / Mac just call sudo ./ﬁxpermissions.sh

On legacy operating systems: ask your system administrator

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Model - View - Controller

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The MVC Pattern

Model
an object which contains data and business logic of a
certain domain

doesn't contain any information about the presentation of
that data, but rather deﬁnes the behaviour

in the FLOW3 project we prefer a special kind of model,
the Domain Model

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The MVC Pattern

View
represents the display of the model on the web or another
output channel

views only display data, they don't build or modify it

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The MVC Pattern

Controller
reacts on user input, selects and manipulates the model as
accordingly

selects a view and passes it the prepared model for
rendering

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MVC

Action Controller
An action controller

accepts a request

evaluates arguments

calls the action deﬁned in the request

and adds output to the response

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MVC

Action Controller: Important Methods
Actions - methods just need an "Action" sufﬁx:
public function indexAction() { … }
public function deleteAction() { … }

Initialization for the whole controller:
public function initializeController() { … }

Initialization before any action is called:
public function initializeAction() { … }
public function initializeXYAction() { … }

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MVC

Action Arguments
Arguments are deﬁned by declaring them in the action method

Argument data types are deﬁned by type hint and documentation
/**
* Action that displays one single post
*
* @param F3BlogDomainModelPost $post The post to display
* @return void
* @author Robert Lemke <robert@typo3.org>
*/
public function showAction(F3BlogDomainModelPost $post) {

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DEMO

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Validation

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Validating Arguments
All arguments passed to an Action Controller are automatically validated

White List policy: Only registered arguments are available

Accessing the $_GET and $_POST super globals is dangerous, dirty, deprecated
and will probably be intercepted in the future

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Validating Arguments
FLOW3 comes with a bunch of built in validators:

AlphaNumeric, EmailAddress, Float, Integer, NotEmpty, Number,
NumberRange, RegularExpression, UUID, Text

Custom validators can be created (especially for Domain Models)

All validators can be chained (and nested)

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Validation Rules Definition
All validation rules are defined by annotations in place

Additional rules may be defined programmatically
class Blog {

/**
* The blog's name. Also acts as the identifier.
*
* @var string
* @validate Alphanumeric, Length(minimum = 3, maximum = 50)
* @identity
*/
protected $name = '';

/**
* A short description of the blog
*
* @var string
* @validate Text, Length(maximum = 150)

Hitchhiker's Guide to FLOW3
*/ Inspiring people to
protected $description = '';
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Validation Rules Definition

/**
* Create action for this controller.
*
* @param string $emailAddress
* @return string The rendered view
* @author Robert Lemke <robert@typo3.org>
* @validate $emailAddress EmailAddress
*/
public function createAction($emailAddress) {
}

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Security

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Routing

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Caching

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Progress

Developing TYPO3 5.0 ...

Development with FLOW3 Inspiring people to
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Playground

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Things to play with

F3BLOG
Try out the Blog Example:
svn co https://svn.typo3.org/FLOW3/Distribution/branches/BlogExample/

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Things to play with

TYPO3CR Admin
Play with persistence and watch your object in the TYPO3CR Admin

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Things to play with

Testrunner
Experiment with Test-Driven Development and watch the tests in
FLOW3's test runner

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Links
FLOW3 Website
http://flow3.typo3.org

TYPO3 Forge
http://forge.typo3.org

Coding Guidelines
http://flow3.typo3.org/documentation/coding-guidelines/

Further Reading
http://flow3.typo3.org/about/principles/further-reading/

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Further Reading
http://flow3.typo3.org/about/principles/further-reading/

Beat
http://beat.typo3.org

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Questions

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T3DD09: Hitchhiker’s Guide to FLOW3

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