Skip to main content

ColdFusion 10 : onAbort method in Application.cfc

I was experimenting with a new method 'onAbort' introduced in ColdFuion 10 which can be defined in an Application.cfc file. This method is invoked when cfabort is called. What if showerror attribute is also present in the cfabort tag? Would it still invoke the onAbort method and then onError? The onAbort method would be ignored and the onError method would be invoked. Even in a case wherein the onError method is not defined in Application.cfc, the onAbort method wouldn't be invoked. In this case the error message would be shown on the standard error template.

Application.cfc:

<cfcomponent> <cffunction name="onError" access="public" returntype="void" output="false" hint="I handle any uncaught exceptions."> <cfreturn/> </cffunction> <cffunction name="onAbort" access="public" returntype="void" hint="Hanldes Aborted request"> <cfargument type="String" name="requestPage" required=true/> <cfoutput> Request Page: #requestPage#</cfoutput> <!--- do stuff ---> </cffunction> </cfcomponent>
Now when the cfabort tag is executed, the onAbort method would be invoked. If the showerror attribute is present in the cfabort tag (<cfabort showerror="Error!!">), then the onError method would be invoked; ignoring the onAbort method.

Comments

  1. Interesting, didn't know about the onAbort for CF10.  I'm curious though...  in CF9 onRequestEnd would execute after a CFAbort, is this still the case and does onAbort happen before or after the onRequestEnd (if it does)?

    See Ben's post on it for CF9 http://www.bennadel.com/blog/2221-CFAbort-And-OnRequestEnd-Behavior-In-ColdFusion-8-And-ColdFusion-9.htm

    ReplyDelete
  2. David, thanks for bringing this up. In CF10, the onRequestEnd method will not be invoked when cfabort is executed. Also this method is not invoked when cflocation and cfcontent is executed.

    ReplyDelete
  3. I've posted this change in behavior 
    http://www.sagarganatra.com/2012/02/coldfusion-10-onabort-and-onrequestend.html

    ReplyDelete

Post a Comment

Popular posts from this blog

How to use the APP_INITIALIZER token to hook into the Angular bootstrap process

I've been building applications using Angular as a framework of choice for more than a year and this post is not about another React vs Angular or the quirks of each framework. Honestly, I like Angular and every day I discover something new which makes development easier and makes me look like a guy who built something very complex in a matter of hours which would've taken a long time to put the correct architecture in place if I had chosen a different framework. The first thing that I learned in Angular is the use of the APP_INITIALIZER token.

On GraphQL and building an application using React Apollo

When I visualize building an application, I would think of using React and Redux on the front-end which talks to a set of RESTful services built with Node and Hapi (or Express). However, over a period of time, I've realized that this approach does not scale well when you add new features to the front-end. For example, consider a page that displays user information along with courses that a user has enrolled in. At a later point, you decide to add a section that displays popular book titles that one can view and purchase. If every entity is considered as a microservice then to get data from three different microservices would require three http  requests to be sent by the front-end app. The performance of the app would degrade with the increase in the number of http requests. I read about GraphQL and knew that it is an ideal way of building an app and I need not look forward to anything else. The GraphQL layer can be viewed as a facade which sits on top of your RESTful services o...

Using MobX to manage application state in a React application

I have been writing applications using React and Redux for quite some time now and thought of trying other state management solutions out there. It's not that I have faced any issues with Redux; however, I wanted to explore other approaches to state management. I recently came across MobX  and thought of giving it a try. The library uses the premise of  `Observables` to tie the application state with the view layer (React). It's also an implementation of the Flux pattern wherein it uses multiple stores to save the application state; each store referring to a particular entity. Redux, on the other hand, uses a single store with top-level state variables referring to various entities.