Posts Tagged kludge

ColdFusion Including Sub-Applications

Ben Nadel has an interesting question on his blog about including sub-applications from within an existing CF application, and having the relevant sub-level Application.cfc fire off.

This is doable in a fairly simple manner but which relies on a barely-documented feature of ColdFusion, and the fact that the sub-level Application.cfc fires is completely undocumented, and may even be unintentional!

Here’s how you can do it, but because we’re wandering into a pretty hazy gray area here, I wouldn’t go using this unless you don’t have much other choice.


Then you can do the below and if it has an Application.cfc, that application.cfc will be invoked.

The caveat though is that CGI scope will still contain the variables from the source page – for example, CGI.SCRIPT_NAME will still be the script name in the URL. As a result, context-sensitive functions like ExpandPath() will operate relative to the root file being called – meaning you might not get the results you’re expecting.

Also the code above will only work 1 sub-application level deep; you’d have to tweak it if you wanted a sub-application within a sub-application, but by that point, zounds, what are you doing man?!?

The good news is that even if the sub-application executes a <cfabort>, execution will return to the calling page, so that sub-app can’t abort your own page.

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