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Re: attempt to assign value to unknown key
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Re: attempt to assign value to unknown key


  • Subject: Re: attempt to assign value to unknown key
  • From: Nathan Hampton <email@hidden>
  • Date: Fri, 18 Feb 2005 18:55:47 -0800

Well, I finally wound up deleting the Main component, quitting the developer apps, deleting the build files, restarting my computer, leaving it alone overnight, and re-creating Main from scratch. And what do I get for my trouble? The same thing happened! I'm becoming rather frustrated, and I have absolutely no idea what to do next.

Well, I have one idea ... I think. Do you think, Chuck, that switching to WOLips and Eclipse is likely to solve the problem? If so, that may be the next step. I'm also open to any other ideas floating around out there.

Thanks!

--NCH

On 17 Feb 2005, at 12:40 PM, Chuck Hill wrote:

Assuming that George's suggestion was not the problem, did you try quitting xCode, WOBuilder, and EOModeler before deleting (rm -r) the build/ directory under the project? Sometimes the tools are rather agressive about caching. Wouldn't you really rather be using WOLips and Eclipse? ;-)

Chuck


On Feb 17, 2005, at 6:04 AM, George Domurot wrote:

This has happened to me several times. Usually when I have no setMethod(Object value), event though I don't want anything actually set. Adding the appropriate set method has always cleared up the issue, event though the method doesn't actually do anything. In your case, do you have a similar method, such as:

	public setShowID(YouKeyObjectClass value){}

Adding this should do the trick.

-George

On Feb 16, 2005, at 8:50 PM, Nathan Hampton wrote:

This suddenly started happening to me, though in my case it's trying to get the value. I first confirmed that the instance variable is public (Note to Chuck: I re-typed it just to make sure). Then I changed it to private and added accessors. Still no dice. I've cleaned the targets both with Xcode's clean function and by deleting all the build products manually, both before and after I put the accessors in. I'm starting to get a touch frustrated, and I DON'T want to start this project over.

Help!

--NCH

On 31 Jul 2004, at 5:23 PM, Art Isbell wrote:

On Jul 31, 2004, at 2:09 AM, Amorya North wrote:

Reason:
[<com.webobjects.appserver.WOComponent name: TabsForShows
subcomponents: null > takeValueForKey()]: attempt to assign value to
unknown key: 'showID'. This WOComponent does not have an instance
variable of the name showID or _showID, nor a method of the name
setShowID or _setShowID


The thing is, TabsForShows (the subcomponent I'm trying to call) _does_
have a key called showID.

This can occur if the showID instance variable isn't public and no public access methods exist. public instance variables don't support good object-oriented design, so a protected or private instance variable with public accessors is better.


Aloha,
Art

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  • Follow-Ups:
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      • From: Travis Britt <email@hidden>
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References: 
 >Re: attempt to assign value to unknown key (From: Nathan Hampton <email@hidden>)
 >Re: attempt to assign value to unknown key (From: George Domurot <email@hidden>)
 >Re: attempt to assign value to unknown key (From: Chuck Hill <email@hidden>)

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