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 the contents of a file


Let's change our code in the listing_8_01.cfm template to loop through the contents of a file; this will allow us to have a bit more control over what we do with the output.

  1. 1. Edit listing_8_01.cfm, remove the <cffile action="read">, and let's use a loop to display each line of the code:

    <cffile action="append" file="logs/mylog.txt" output="This is the output to our log file! #Now()#">
    <cfloop file="logs/mylog.txt" index="i">
    <cfoutput>#i#</cfoutput><br>
    </cfloop>
    
  2. 2. If you now run the template by going to http://localhost:8888/Chapter_8/listing_8_01.cfm, you will get each line outputted nicely. You could now parse each line.

What just happened?

The <cfloop> tag has the file attribute which lets us bypass reading the file directly, as the file could be rather large. Using the <cfloop file=""> tag, we can loop through every line in a very large file and parse it without worrying...