Home → Problems →

Model not being injected

• Edit

Joe

30 Jun, 2011 06:25 PM

My model does not seem to get injected into my service class, I keep getting a Cannot access a property or method of a null object reference error.

in my context I have the following:
injector.mapSingleton(MenuModel);

in my service class I Inject the model like so:
[Inject] public var model:MenuModel;

Am i missing something?

1. 1 Posted by Paul Robertson on 30 Jun, 2011 06:58 PM

   

   A couple of other "easily to overlook" things to check:

   - Is your Service class mapped (e.g. using injector.mapSingleton()) or
   are you creating an instance yourself?

   - In your Service class, are you accessing "model" in the constructor?
   Injected properties aren't available in the constructor (you can use a
   method marked with [PostConstruct] instead).

   Paul

   • Edit

2. Support Staff 2 Posted by Stray on 30 Jun, 2011 07:56 PM

   

   Hi Joe - incase what Paul has said doesn't cover it - we have a section on null injection errors in our 'common problems' document:

   https://github.com/robotlegs/robotlegs-framework/wiki/common-problems

   • Edit

3. 3 Posted by visnik on 30 Jun, 2011 07:59 PM

   

   Paul,

   I found the problem, I was creating an instance my self in my command. Thanks.

   • Edit

4. Stray closed this discussion on 01 Jul, 2011 10:03 AM.