[Seaside] Seaside Json serialization for Dictionary, Collection does not recursive jsonOn: aStream ?

Bart Gauquie bart.gauquie at gmail.com
Tue Feb 2 06:26:24 UTC 2010

Hi Nick,

You are right about your change. Its the same kind of issue. I can include
your changes as well.

The only thing dangerous about this is that it can create an endless loop
(the recursive json: calls I mean - also applies to my fixes). But I
consider it the responsibility of the developer to avoid having this. After
all, the resulting Json should also not have loops in it ...



On Mon, Feb 1, 2010 at 10:22 PM, Nick Ager <nick.ager at gmail.com> wrote:

> Hi Bart,
>> I've also noticed this. There is no implementation of jsonOn: aStream on
>> Object class right now.
>> Your implementation seems like a sensible default thing to do.
>> Its actually highly related to
>> http://code.google.com/p/seaside/issues/detail?id=449 (Generating JSON is
>> difficult) bug.
> I've just discovered that the code I posted previously for a default
> implementation of Object>>jsonOn: aStream suffered from a similar problem to
> the one's you've found. Assuming your refactoring the last line should
> read:
>     aStream json: attributes
>  so the whole code reads:
> Object>>jsonOn: aStream
>  | attributes |
> attributes := Dictionary new.
> self class instVarNames do:
>  [ :ivarName |
> attributes
> at: ivarName
> put: (self instVarNamed: ivarName) ].
>  aStream json: attributes
> perhaps this could be included with your changes? Comments?
> Nick
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