Just FYI for those following along,
I tried the following in my test method even though I wouldn't be able to in my
Form object scenario:
$oChildObject:=Null // $oParentObject.ChildInformation =
{FirstName:John,LastName:Smith}
Drew
-----Original Message-----
From: 4D_Tech <[email protected]> On Behalf Of Drew Waddell via
4D_Tech
Sent: Thursday, February 21, 2019 1:28 PM
To: Olivier Deschanels <[email protected]>; 4D iNug Technical
<[email protected]>
Cc: Drew Waddell <[email protected]>
Subject: RE: Object notation bug?
I am unable to do $oChildObject:=null in my actual situation because I am
passing that object into a Dialog so in my situation $oParentObject is actually
the Form object, I don't have the local variable for $oChildObject on the form.
So is there another command to clear both references without having loop over
all properties in the child and remove them individually?
Drew
-----Original Message-----
From: Olivier Deschanels <[email protected]>
Sent: Thursday, February 21, 2019 1:21 PM
To: 4D iNug Technical <[email protected]>
Cc: Drew Waddell <[email protected]>
Subject: Re: Object notation bug?
Hi,
That’s not a bug. That’s normal.
$oChildObject:=New object create a reference to a object store in $oChildObject
OB SET($oParentObject;"ChildInformation";New object) push another reference
into the $oParentObject but the old reference still exist because $oChildObject
isn’t cleared.
you try : $oParentObject.ChildInformation:=Null
try this $oChildObject:=null
and read $oParentObject
Regards,
Olivier
Olivier Deschanels
Consultant Expert
4D SAS
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> Le 21 févr. 2019 à 18:59, Drew Waddell via 4D_Tech <[email protected]> a
> écrit :
>
> I am trying to figure out if this is a bug or not. This is a watered down
> version of something I am trying to do:
>
> C_OBJECT($oParentObject;$oChildObject)
>
> $oChildObject:=New object
> $oParentObject:=New object
> $oParentObject.ChildInformation:=$oChildObject
> $oParentObject.ChildInformation.FirstName:="John"
> $oParentObject.ChildInformation.LastName:="Smith"
>
> I want $oChildObject and $oParentObject.ChildInformation to remain the same
> and should because of how the references work, so at this moment each are
> {FirstName:John,LastName:Smith}. Let say something happens like maybe there
> is a Clear button, how would one clear the child object?
>
> First, I wanted to do this:
>
> $oParentObject.ChildInformation:=Null // $oChildObject =
> {FirstName:John,LastName:Smith}
>
> Okay, I thought that was the correct way to clear both objects but maybe
> there is a different way so maybe this?
>
> OB SET($oParentObject;"ChildInformation";New object) //
> $oChildObject = {FirstName:John,LastName:Smith}
>
> Nope, again the child object with $oParentObject is cleared but $oChildObject
> remains {FirstName:John,LastName:Smith}. So do I really have to loop over
> all properties and remove them individually?
>
> OB REMOVE($oParentObject.ChildInformation;"FirstName")
> OB REMOVE($oParentObject.ChildInformation;"LastName") //
> $oChildObject = {}
>
> Finally when I make a change in the $oParentObject.ChildInformation the
> referenced object $oChildObject is also updated.
>
> Is this a bug? Shouldn't the :=Null work and also change the $oChildObject
> variable?
>
> Thanks,
> Drew
>
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