Level 30
What will wasChanged() show for Product A? What about for Product B?
How about just try it out yourself? In tinker or some test artisan command.
1 like
Apr 8, 2026
3
Level 1
How does wasChanged work with related tables?
I'm writing some complex validations for an inventory table - a table of products. This Products table has a couple of related child tables. I'd like to save some resources by only running validations for fields that have changed.
Scenario: I edit Product A, change a couple of fields in the Product record and also change some of the data that's stored in one of the child tables. Next, I edit Product B and only change child-table data; the Product record isn't changed at all.
What will wasChanged() show for Product A? What about for Product B?
Level 1
Because I've had it happen in the past that I tried something myself, thought I had it right, then later discovered there was some aspect of it that I didn't know about, which resulted in my code working as intended sometimes and not working sometimes, and figuring out exactly what was going on and how to fix it was hellish. Worse, on at least one occasion I discovered that there was no way to fix it; I had to throw out several days worth of work and start over from scratch.
Level 50
It only tracks the attributes of the model, not its relations.
I like to confirm these things straight from the source code because it's easy through an IDE. Here are some relevant methods from Model and the HasAttributes trait:
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