Trigger Event On Sub Entity Save

[Alchemy86]

Apologies if I'm being slow with this or I'm failing to find the documentation for it.

I have existing system, large and complex. I have used this before for smaller things but here I'm trying to remove existing records from a repo when a new record is added. As they can be added in unknown numbers of places, I'm using the library to trigger a clear before save on this Entity.

BUT. It seems a number of records are being added as a sub entity of another object. These end up in the DB without triggering the .. trigger.

Is there a way to configure the trigger to also fire if it is a sub entity of another record? Or can it not detect this. Or worse, should it already be working and for me its not.

Thanks,

[koenbeuk]

Hi @Alchemy86

Triggers will only fire for entities that are in a Added/Modified/Deleted state.

a number of records are being added as a sub entity of another object

Then all triggers targeting the entity type that is being added will be raised.

Is there a way to configure the trigger to also fire if it is a sub entity of another record?

Yes, by implementing a trigger that targets the sub entity type.

record Parent(int Id, List<Child> Children);
record Child(int Id);

class ParentTrigger : IBeforeSaveTrigger<Parent> { ... }
class ChildTrigger : IBeforeSaveTrigger<Child> { ... }

var parent = new Parent(0, new());
dbContext.Add(parent);
dbContext.SaveChanges(); // Will raise ParentTrigger

var child = new Child(0);
dbContext.Add(child);
dbContext.SaveChanges(); // Will raise ChildTrigger

parent.Children.Add(child);
dbContext.SaveChanges(); // Will raise ChildTrigger as the ForeignKey is configured on the Child

Let me know if this helps

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