Adobe ColdFusion Cookbook

Most Popular Recipes

• Sending an Email through GMail With ColdFusion
  • Peter Freitag 
  •   September 25, 2009
  • Avg. rating 5.00
  
  

  Problem

  You want to use ColdFusion to send an email using gmail's smtp server.

  Solution

  Use the cfmail tag and specify the useSSL, server, and port attributes to match gmail's requirements.

• How can I store an image in a database?
  • mat evans 
  •   October 13, 2009
  • Avg. rating 5.00
  
  

  Problem

  You need to store an image, but perhaps only have access to a database and not a file system. There are many examples of this now with cloud architecture becoming more popular.

  Solution

  Turn the image in to a ColdFusion Image object so you can manipulate the image if needed, and then turn it back into a BLOB using ImageGetBlob().

• Safely and securely upload image files
  • Jamie Krug 
  •   October 14, 2009
  • Avg. rating 5.00
  
  

  Problem

  Allowing users to upload image files, which are then displayed, can seem extremely simple but has its challenges and security concerns. The main danger is the fact that much of the information available to us at the time of an upload request is supplied by the client/browser, which means all of that information has the potential to be "spoofed" by an unscrupulous hacker.

  Solution

  We can safely upload image files by uploading to a temporary (non-Web-accessible) directory and then moving beneath the Web root once we're certain we have a safe and valid image file.

• Display output with alternate row styles
  • Paul Connell 
  •   October 13, 2009
  • Avg. rating 5.00
  
  

  Problem

  When displaying data you need to alternate the background colour of the rows to differentiate them.

  Solution

  Use an incremented variable or currentrow (for query objects) and % (MOD) the value with 2.

• Create a Coldfusion stylesheet switcher
  • Glyn Jackson 
  •   November 4, 2009
  • Avg. rating 5.00
  
  

  Problem

  I want to create a method that allows my visitors to switch style sheets without the use of JavaScript in ColdFusion. Can this be done?

  Solution

  Yes, to accommodate different user circumstances there are many different methods that are used to switch styles on a web page. The most popular method is to switch the CSS (Cascading Style Sheets) using JavaScript on the client side. Ironically, by using 'some' of the JavaScript methods you could be making your site even less accessible to the end user. Here is a simple method you can implement in ColdFusion a server side technology that does not depend of the use of JavaScript.