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Fusebox 4
Michael Smith, TeraTech, Inc.
[email protected]
http://www.teratech.com
301-881-1440 x110
Copyright TeraTech 2003
©2003 TeraTech, Inc
Overview
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What is Fusebox
What is Fusebox 4?
How Fusebox works
Circuit syntax
Fuseactions
Layouts and Content variables
Extending Fusebox 4 with plugins
©2003 TeraTech, Inc
Speaker Information
Who am I?
 Michael Smith
 President of TeraTech, Inc Rockville MD
> http://www.teratech.com/
> ttWebReportServer, CFXGraphicserver
 MDCFUG, CFUN-03, Fusebox Conf
 Articles in CFDJ, Fusion Authority
 Winner CFDJ award Best CF Consulting
©2003 TeraTech, Inc
More About Me
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22 years programming
7 years with ColdFusion
4 years with Fusebox
Also work with SQL, JavaScript, HTML, VB,
Oracle, Access
 Teach one-on-one and custom classes
 On site and custom development
 Fusebox and Process Methodology
©2003 TeraTech, Inc
What is Fusebox?
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Way to organize code and files
A methodology for programming
A core file that supports the above
A non-profit organization (fusebox.org) that
coordinates the above
©2003 TeraTech, Inc
Benefits of Standardization
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Better team communication
Cheaper maintenance
Can pick up others code faster
Fewer bugs due to different styles
Can think about the fun stuff instead of code
structure
©2003 TeraTech, Inc
Why Fusebox?
 Fusebox began and continues to be guided
by a developer community concerned with
making their projects more successful, their
clients happier, and their own work less
frustrating and more rewarding.
©2003 TeraTech, Inc
What makes Fusebox 3
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Routes via index.cfm?fuseaction=c.fa
Separate HTML, SQL, CF in fuses
Central switch for control
Nested Circuits
Nested Layouts
Compound Fuseactions
Exit Fuseactions (XFA’s)
XML Fusedocs
©2003 TeraTech, Inc
Fusebox Project Life Cycle
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Wireframe
HTML Prototype
Prototype + Devnotes
Final Code + Devnotes
Sign off
©2003 TeraTech, Inc
Fusebox 3 Core Concepts
 Fusebox 3 core concepts
> all actions of the software occur as a response to
a request made of the fusebox
> code is encapsulated in circuits
> circuits are made to be as independent of each
other as possible (new requests return to the
fusebox rather than being routed directly to
another circuit)
> fuses are based on "pipes and filters" where the
output of one file becomes the input of the other,
allowing for ease of reuse
©2003 TeraTech, Inc
New capabilities in Fusebox 4
 Fusebox 4 makes development even easier
> XML configuration files provide language independence
> multiple fuseactions in a single HTTP request allows for
more flexible design patterns such as MVC
> pre-parsing of files means better performance
> layout files lose their minority status—simply another fuse
> the <cfflush> tag can now be used
> plugins let developers modify functionality without editing
the core files
> content component variables allow developer to break page
into multiple component blocks
©2003 TeraTech, Inc
What about CFCs?
 Nothing in Fusebox 4 prohibits the use of
CFCs, but they are not required
 Fusebox MX addresses the issue of object
oriented programming
with CFCs
©2003 TeraTech, Inc
Fusebox terminology : fuseaction
 A fuseaction is the request made of a
Fusebox application
> <form action="index.cfm?fuseaction=Login.validate">
> <form action="index.cfm?fuseaction=Survey.store">
> <form action="index.cfm?fuseaction=Users.update">
©2003 TeraTech, Inc
Compound Fuseactions
 A request made of the server to perform some action
is known as a fuseaction.
 Fuseactions are made up of the circuit name, a dot
separator, and the actual request.
> Cart.addItem
> Users.login
> Scheduler.requestMeeting
> Noun.verb
©2003 TeraTech, Inc
Fusebox terminology : circuit
 A circuit is a logical grouping of related
fuseactions
> www.teratech.com/index.cfm?fuseaction=Training.details
> www.teratech.com/index.cfm?fuseaction=Training.register
> www.teratech.com/index.cfm?fuseaction=Training.confirm
©2003 TeraTech, Inc
Fusebox terminology : fuse
FB3
<cfcase value="listUsers">
<cfinclude template="qry_AllUsers.cfm" />
<cfinclude template="dsp_UsersList.cfm" />
</cfcase>
FB4
 A fuse is an individual code file used either
singly or in combination with other fuses to
carry out a fuseaction
<fuseaction name="listUsers">
<include template="qry_AllUsers.cfm" />
<include template="dsp_UsersList.cfm" />
</fuseaction>
©2003 TeraTech, Inc
The Fuse Rules
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Length Challenged
Reuseable
Standard Prefix: qry_, dsp_, act_
Prefix Rebels
HTML, SQL or CF only
Contains Fusedocs
Clueless – blackbox – no includes
Check inputs
Good Name – no abv
Name recordset after fuse name
qry_FuseName
©2003 TeraTech, Inc
Fusebox processing
 Index.cfm calls FB core file with circuit and fuseaction
from URL or Form variables.
 FB core parses circuit names from fusebox.xml.cfm
 FB core parses correct circuit.xml.cfm and fuseaction
from circuit.xml.cfm
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Select fuses or fuseactions to execute from circuit.xml
Repeat for rest of Fuse Queue
Save to compiled CFM
Run the CFM
 At certain point in core processing plugins may be
added
©2003 TeraTech, Inc
A sample page viewed by a user…
©2003 TeraTech, Inc
…is seen as a collection of requests made
of the Fusebox application…
Company.getCurrentStockPrice
Employment.newestJobs
Training.upcomingEvents
Benefits.notes
©2003 TeraTech, Inc
Fusebox 4 demonstration
 The code used in this demonstration is
available at
beta.fusebox.org
©2003 TeraTech, Inc
New features
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Plugins let you change how FB core behaves
Better for MVC – run fuse built in
Compiled – faster
FBX config files now in XML format
©2003 TeraTech, Inc
Fusebox.xml.cfm
 This XML file configures your Fusebox
application
 Circuit definitions and locations and parents
 Global fuseactions
 Plugin phases
 In app root directory
 Replaces fbx_circuits.cfm
 Uses .cfm file extension to prevent hackers
from browsing and to allow editing in CF
Studio (VTML helpers available)
©2003 TeraTech, Inc
Defining Circuits
 FB3
<cfset fusebox.circuits.home = "/home">
<cfset fusebox.circuits.Users =
"/home/Users">
 FB4
<circuits>
<circuit alias="home" path="" parent=""/>
<circuit alias="Users" path="Users/"
parent="home"/>
</circuits>
©2003 TeraTech, Inc
Fusebox Parameters
<fusebox-parameters>
<parameter name="fuseactionVariable"
value="method" />
<parameter name="defaultFuseaction"
value="Controller.dspHome"/>
<parameter name="precedenceFormOrUrl"
value="form"/>
<parameter name="execute" value="true"/>
<parameter name="parseWithComments"
value="true"/>
©2003 TeraTech, Inc
More parameters
<parameter name="mode"
value="development"/>
<parameter name="scriptlanguage"
value="cfmx"/>
<parameter name="scriptFileDelimiter"
value="cfm"/>
<parameter
name="maskedFileDelimiters"
value="htm,cfm,cfml,php,php4,asp,aspx"/>
</fusebox-parameters>
©2003 TeraTech, Inc
Global fuseactions
 Can run fuseactions at the beginning or end
of every page request
 <globalfuseactions>
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<preprocess>
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<postprocess>
 Used for header and footers
©2003 TeraTech, Inc
Plugins
 Let you change what happens in the core without
having to edit its code
> preProcess: called once, at the beginning of the request
processing
> preFuseaction: called once per fuseaction, prior to the
invocation of any fuseaction
> postFuseaction: called once per fuseaction, after the
invocation of any fuseaction
> fuseactionException: called once per fuseaction, if any
exception was thrown during that fuseaction
> postProcess: called once, at the end of the request
processing
> processError: called once, if any error was thrown during the
request processing
©2003 TeraTech, Inc
Circuit.xml.cfm
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Replaces fbx_switch.cfm and fbx_layout.cfm
Contains fuseactions and fuses to call
May also contain logic
Content Variables
Uses XML FB language format similar to
CFML without the CF on the front of each tag
 Parsed by FB4 compiler into CFML.
©2003 TeraTech, Inc
Circuit syntax
 Including a fuse:
<fuseaction name="Login">
<include template="dspLogin.cfm"/>
</fuseaction>
 Calling another fuseaction:
<fuseaction name="listProducts">
<do action="m.getProducts"/>
<do action="v.displayProducts"/>
</fuseaction>
©2003 TeraTech, Inc
In FB 3 that would have been:
 Including a fuse:
<cfcase value="Login">
<cfinclude template="dspLogin.cfm"/>
</cfcase>
 Calling another fuseaction:
<cfcase value="listProducts">
<cfmodule template="index.cfm"
fuseaction="m.getProducts">
<cfmodule template="index.cfm"
fuseaction="v.displayProducts">
</cfcase>
©2003 TeraTech, Inc
XFAs
 Exit FuseActions are variables to avoid
hardcoding exit points in your code
<cfset xfa.submitForm = "c.dspConfirm">
 In the circuit.xml.cfm you can use
<set name="xfa.submitForm"
value="c.dspConfirm"/>
©2003 TeraTech, Inc
Content Component Variables
 Create by “do action”ing a fuseaction
<do action="View.dspHome"
contentvariable="WelcomeCCV"/>
 Result is streamed into the variable for later
output
 Uses CFSAVECONTENT tag
 Output variables in layout file – good for
portal applications.
 Note: fusebox.layout variable is no longer
automatically created
©2003 TeraTech, Inc
Layout Example
 Layouts are no longer special cases, but just
regular fuses.
<fuseaction name="dspHelloWorld">
<do action="v.HelloWorld"
contentvariable="myContent"/>
<do action="Layout.simpleLayout"/>
</fuseaction>
©2003 TeraTech, Inc
Final thoughts
 Why use Fusebox?
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easier to develop applications
easier to maintain existing code
aids in code repurposing
standard for web application development
supports teams of diverse talents and skills
provides a standardized documentation
exceptionally helpful community of developers
cross-language
helps ordinary developers achieve extraordinary
results
©2003 TeraTech, Inc
Why not?
 Why not use Fusebox?
> you're being paid by your competitor to sabotage
your company's
development efforts
> framework? you don't need no stinkin' framework
> you have a strong masochistic streak that enjoys
the pain of your
current software development process
> you made a decision against Fusebox early on
and haven't bothered to reevaluate it
> call you crazy, but you just like to code by the seat
of your pants!
©2003 TeraTech, Inc
How about a Fusebox book?
 Discovering Fusebox 4
by John QuartovonTivadar with Sandra
Clark, Brian Leroux and
Perry Woodin
 Consise coverage of
Fusebox 4 framework
 www.techspedition.com
 Out by September
©2003 TeraTech, Inc
4
How to get Fusebox 4
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Currently FB 4 in beta
Free download from beta.fusebox.org
Requires ColdFusion MX
CF 5 version in the works (uses XML parsing
add on).
©2003 TeraTech, Inc
Questions
[email protected]
©2003 TeraTech, Inc