_undeleteThing

Given the OID of a deleted Thing, restore it -- Function

You can use this in one of two ways. On the one hand, you can pass a single literal OID as the parameter to this function:

_undeleteThing(.2j39s9d)

This will look through the History, and restore the Thing with that OID to its state just before it was last deleted.

On the other hand, you can pass in a list of OIDs to restore, which you will usually get from a call to _listDeletedThings with the criteria you are looking for:

_listDeletedThings(filter = _model -> _is(My Model)) -> _undeleteThing

Be careful: this second version can restore a lot of things at once, so don't use it casually! This is a power feature, to be used with a lot of care. You should probably use _listDeletedThings to display the Things first, to make sure you'll be restoring what you want.

In large Spaces with a great deal of history, this can be pretty slow, since it has to talk the entire history. (Twice if you are using both _listDeletedThings and _undeleteThing.) It is possible for the page to time out before it completes, but it ought to eventually finish. Please tell us if it seems to be failing to do so.