Seaside - Why should you care? (Dynamic Stockholm 2010)

Seaside
Why should you care?
~ Dynamic Stockholm 2010 ~
TM
TM
Julian Fitzell
Cincom Systems
Tuesday, November 2, 2010

What is Seaside?

A web framework
TM

A web framework^
application
TM

A web framework^
application
^
Smalltalk
TM

A web framework^
application
^
heretical?
TM

A web framework^
application
^
template-free
TM

A web framework^
application
^
open-source
TM

WebObjects

Ruby

Photocourtesyofhttp://www.ﬂickr.com/photos/pragdave/173643703/

The web is a language
equalizer

I can’t see anything
wrong. Could you try
again?

“Why should
I care?”

Programming
costs
money

Programming
costs
money
lots of

Let’s optimize
development

Let’s take away the
pain

Let’s focus on the
features that make
our products truly
exceptional

So what’s
your pain?
Courtesy of stock.xchng user Bubbels

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="mailreader-support" namespace="/" extends="mailreader-default">
<action name="Tour">
<result>/tour.html</result>
<interceptor-ref name="guest"/>
</action>
<action name="Welcome" class="mailreader2.Welcome">
<result>/Welcome.jsp</result>
</action>
<action name="Logout" class="mailreader2.Logout">
<result type="redirectAction">Welcome</result>
</action>
<action name="Login_*" method="{1}" class="mailreader2.Login">
<result name="input">/Login.jsp</result>
<result name="cancel" type="redirectAction">Welcome</result>
<result type="redirectAction">MainMenu</result>
<result name="expired" type="chain">ChangePassword</result>
<exception-mapping
exception="org.apache.struts.apps.mailreader.dao.ExpiredPasswordException"
result="expired"/>
</action>
<action name="Registration_*" method="{1}" class="mailreader2.Registration">
<result name="input">/Registration.jsp</result>
<result type="redirectAction">MainMenu</result>
</action>
</package>
XML Files?

Tag soup?
Courtesy of stock.xchng user lusi

Spaghetti
Templates?
Courtesy of stock.xchng user TouTouke

Waiting for
edit,
compile,
run?
Courtesy of stock.xchng user matchstick

Code
generation?
Courtesy of stock.xchng users wildiexx and sundesigns

Mapping?
Object-Relational
Courtesy of stock.xchng user theswedish

Passing around IDs?

Security?
Courtesy of stock.xchng user lusi

step
Processes?
Multi-
Courtesy of stock.xchng user mexikids

Components

New Item
Add

A B C

Demo

New Item
Add
?
A B C

New Item
Add
?New Item
Add
A B C

New Item
Add
New Item
Add
item
item
A B C

a := self request: ‘A number?’.
b := self request: ‘Another?’.
self inform: a + b

ActionAction
WebBrowser

WebBrowser
TaskTask

WebBrowser
TaskTask
CONTINUATIONS

Single Tool-chain

“7 Things”
Courtesy of stock.xchng user chux
3
21
4
5
6 7

In Smalltalk,
everything is an
object

In Smalltalk,
everything is an
object
Seaside+

Templates aren’t OO

html heading: title

✓Debugging

Refactoring
✓

Callbacks...
✓

<a href=“/deleteItem?id=<% print
$item.id%>”>Delete</a>

html anchor
callback: [ self delete: item ];
with: ‘Delete’

Security
Courtesy of stock.xchng user julosstock

Output is encoded
by default

Parameter injection
Courtesy of stock.xchng user foxumon

Parameter names are
not meaningful

IDs are not
passed around

Actions are bound to
functions

If you don’t expose it,
your users can’t do it!

Replay attacks
Courtesy of stock.xchng user ratnesh

Session (96-bit)

Page (96-bit)

Where can I ﬁnd out
more?

www.seaside.st

Mailing list

Examples

In business, there is nothing
more valuable than a technical
advantage your competitors
don't understand.
– Paul Graham

Julian Fitzell
jfitzell@cincom.com
blog.fitzell.ca
Twitter: @jfitzell
www.seaside.st
Seaside is a trademark of Avi Bryant and Julian Fitzell
CINCOM and the Quadrant Logo are registered trademarks of Cincom Systems, Inc.
All other trademarks belong to their respective companies.
© 2010 Cincom Systems, Inc.
© 2009 Julian Fitzell
All rights reserved

Seaside - Why should you care? (Dynamic Stockholm 2010)

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