Hi
We have a domain class that has a 'state' property, e.g. 'live',
'draft', etc. When our users click the save button on the edit form
they can change the state, however if any validation errors occur the
state should not change (including on the form displaying the errors -
where other user entered values would be displayed even if not
persisted yet). At the moment we've got some rather hairy business
logic managing the state field, so we do something roughly like:
if (asset.validate()) {
asset.state = params.nextState
asset.save()
// redirect, etc.
} else {
// re-render form with errors
}
This is repeated in a couple of places as the domain class in question
is actually the root class of a whole hierarchy. I thought it might be
better to model the 'nextState' as a transient property which can be
bound directly from the form, then do this:
def beforeUpdate = {
if (owner.nextState != state) {
state = owner.nextState
}
}
This works fine so long as some other persistent property is changed,
but if all the user is doing is changing the object's state (which
will generally be the case) then the update never happens as
'nextState' is a transient property and thus the object is not
considered dirty in the Hibernate session.
Is there a way I can 'force' the dirty state of the object? It's
possibly not going to result in the nicest code and we'd be better off
just sticking with the current mechanism, but my curiosity has been
piqued now.
Cheers,
Rob
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