[Erp5-dev] processing relations when deleting an object

[bartek]

Hello

Currently when an object to which some other objects are related is
being deleted the system blocks the operation; however, there may be
situtations when we'd like to do something else - like, edit relations
so that the objects are no longer related, or delete all the related
objects in a 'cascading' way.

I need something like this now, so the question is, what would be a
clean way to implement such a feature? Perhaps it could be a kind of a
configurable interaction, but which would be executed before
Object_hasRelation does its checks (I experimented with interaction
workflow, but if there are related objects that stage is not even reached).

What would you advise?

Bartek

[Jean-Paul Smets]

Hi,

My advice is simple: do not delete the object. Instead, do something
else, such as moving it to a specific state such as cancelled, archived,
etc.

Other approaches (such as the one you describe) easily lead to data
destruction or inconsistencies, especially whenever security is involved.

I suspect the problem you encounter is more a problem of functional
analysis rather than a technical problem.

Regards,

JPS.

Post by bartek
Hello
Currently when an object to which some other objects are related is
being deleted the system blocks the operation; however, there may be
situtations when we'd like to do something else - like, edit relations
so that the objects are no longer related, or delete all the related
objects in a 'cascading' way.
I need something like this now, so the question is, what would be a
clean way to implement such a feature? Perhaps it could be a kind of a
configurable interaction, but which would be executed before
Object_hasRelation does its checks (I experimented with interaction
workflow, but if there are related objects that stage is not even reached).
What would you advise?
Bartek