Book Image

Railo 3 Beginner's Guide

By : Mark Drew , Gert Franz, Paul Klinkenberg, Jordan Michaels
Book Image

Railo 3 Beginner's Guide

By: Mark Drew , Gert Franz, Paul Klinkenberg, Jordan Michaels

Overview of this book

<p>Railo Server is one of the quickest ways to start developing complex web applications online. Widely considered as the fastest CFML (ColdFusion Markup Language) engine, Railo allows you to create dynamic web pages that can change depending on user input, database lookups, or even the time of day.</p> <p>Railo 3 Beginner's Guide will show you how to get up and running with Railo, as well as developing your web applications with the greatest of ease. You will learn how to install Railo and the basics of CFML to allow you to gradually build up your knowledge, and your dynamic web applications, as the book progresses.</p> <p>Using Packt’s Beginner's Guide approach, this book will guide you, with step-by-step instructions, through installing the Railo Server on various environments. You will learn how to use caches, resources, Event Gateways and special scripting functions that will allow you to create webpages with limitless functionality. You will even explore methods of extending Railo by adding your own tags to the server and building custom extensions. Railo 3 Beginner's Guide is a must for anyone getting to grips with Railo Server.</p>
Table of Contents (16 chapters)
Railo 3
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface

Time for action - looping through a structure


  1. 1. In the same directory where we placed our other templates, let's create a template named loopstruct.cfm and let's add the following code that creates a simple structure that we can loop over:

    <cfset myStruct = {item1="Item One", item2="Item Two", item3="Item Three"}>
    
  2. 2. The previous code has a number of keys (item1, item2, item3) that have values; let's loop through them with <cfloop> by using the collection and item attributes:

    <cfloop collection="#myStruct#" item="s">
    <cfoutput>#s# = #myStruct[s]# <br></cfoutput>
    </cfloop>
    
  3. 3. This code would output the following values:

    ITEM3 = Item Three
    ITEM2 = Item Two
    ITEM1 = Item One
    
  4. 4. The variable s refers to the current key that we are looping over, and to get the content, we can use #myStruct[s]#

  5. 5. Let's try this with <CFSCRIPT>. Now and see the difference:

    <cfscript>
    for(s in myStruct){
    WriteOutput(s & " = " & myStruct[s] & "&lt...