Conditional Polymorphism

[A-Corregidor]

Hi there!
I can't find on docs if it's possible to build a conditional polymorphism, omitting it when the discriminator is null.

Let's suppose model A:

{
 id: string,
 entityType: string | null,
 entityId: string | null
}

Thinking of 3 different scenariors:

• entityType corresponds to another model, entityId corresponds with other model's id -> Everything is OK
• entityType corresponds to another model, entityId is null -> I'm not sure when would this happen, but everything is OK
• entityType is null, entityId is null -> Error " Invalid class name null by discriminator natureType. Please check polymorphic types and the discriminator"

Is there any way to ignore polymorphism when discriminator is null?

[A-Corregidor]

Up

[achrinza]

Hi @A-Corregidor, I understand some time has passed since this discussion was initiated. Unfortunately I'm not aware of this being possible with the current implementation. Polymorphism is still a relatively-new feature in LoopBack 4, so there's still plenty of opportunity to improve on it.