[Neos] Why not to subclass TYPO3.Neos:ContentCollection?

[Marcin Ryzycki]

On 2014-01-24 02:07:43 pm +0000, Christian Müller said:

>> In NodeTypes.yaml inside TYPO3.Neos package it's stated:
>> 
>> # Cannot be subclassed.
>> 'TYPO3.Neos:ContentCollection':
> 
> Might be that we need to evaluate that again. Shortly before the 1.0 
> release the ContentCollection rendering was heavily modified, it could 
> be the case that before something was hardcoded that no longer is 
> hardcoded now. I will try to follow up with that and find out if the 
> comment can be removed.

Hi Christian,

I actually didn't follow up with that - there are some issues there.

Basically, when you extend TYPO3.Neos:ContentCollection it works in 
terms of rendering properly collection of nodes inside.

But, when you add some UI inspector properties to it, there's 
JavaScript error when you click on [APPLY] button in inspector:
Uncaught RangeError: Maximum call stack size exceeded in ext-direct.js.

Seems like encodeString() is called in infinite loop. The error is the 
same if you add some properties directly to 
TYPO3.Neos:ContentCollection - so it actually doesn't matter if it's 
subclassed or not.

I did dummy package with an example for that if you'd like to follow up:
https://github.com/ryzy/MR.ContentCollection

Regards,
M.