Tickets :: Comment on [#10880] Rdo: Make *- to-one-relations aware of "no relation" state

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Comment	>> Rdo currently doesn't understand the concept of a missing relation. >> I'd suggest to either return no object or an exception. >> Consistence with to-many-relations is hard. >> These relations always return a list object, possibly an empty one. >> As to-one-relations are often used in chains (at least in my code) >> I'd prefer a clean exception over an empty result but the current >> situation is worst for me. > > When there is a value in the ID field (0, 33, "somekey" as opposed to > '' or NULL), but the referenced object is no longer there, I get an > empty result rather than a wrong object or an exception. Trying to > blindly execute code on this not-an-object results in a crash. > > Changing this too would be clearly BC breaking.
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