Using only pieces of the Application.cfc?

Question

I don't have any formal training in Coldfusion, so things like this really confuse me because they don't work the way I would assume they would.

My folder structure is this:

MainAppFolder
  |
  |_ApplicationFolder
    |
    |_SubAppFolder1
       |_Application.cfc
    |
    |_SubAppFolder2
       |_Application.cfc
    |
    |_Application.cfc

The last Application.cfc contained in the main ApplicationFolder is the Application.cfc I want to contain my <cflogin> stuff. That works and it works great. However, a problem arises when I implement the sub Application.cfc in the SubAppFolderx. Those Application.cfc's only need to contain an onRequestStart event.

<cffunction name="onRequestStart">
    <cfset Application.AppID = 4>
    <cfinvoke component="loc" 
              method="getAppName" 
              returnvariable="appName" />
     <cfset Application.AppName = appName>
</cffunction>

The more I try to fix this problem, the deeper I'm digging myself into a hole. I've attempted to go back and learn more about how to manipulate Application.cfc, but there just isn't much information out there on Coldfusion as far as tutorials go. Documentation for it is great though, but it doesn't help me understand what I need to do in situations like this.

So what do I need to do, to perform what I have in the onRequestStart in the SubAppFolderx? I'm sure it's a simple answer, but like I said I'm just digging myself into a hole here.

What you need to do is extend the application.cfc in the root directory, but you can't do it by saying Extends="Application" like you would for other cfcs. Ben Nadel (of course) has written a great blog post that addresses how to do this: bennadel.com/blog/… — Busches
You should look into using a framework to help with structuring things. FW/1 in particular has the notion of sub-systems which might be a good fit for what you're trying to do. — Peter Boughton

AlexP AlexP · Accepted Answer · 2012-09-18T19:33:33

While cfinclude is OK, it may not offer the functionality you are after (inheritance) As the Application.cfc is in itself a component, you can overload/override the methods like you would with any other CFC.

I wont go into code, because the legend known as Ben Nadel has already posted a perfect blog for this question:

http://www.bennadel.com/blog/1179-Ask-Ben-Extending-Application-cfc-And-OnRequestStart-With-SUPER.htm

Using only pieces of the Application.cfc?

2 Answers