I have 2 models

I’m building a token provisioning API that enforces quotas. When I try to create a Token, I keep getting the following error, and I cannot figure out why:

We have a Rails 6.1 application running an after_commit callback to look into saved_changes value to run some background workers. But the issue is saved_changes returns empty if a model has accepts_nested_attributes_for. It is not only after_commit other callbacks like before_save, and around_save also return empty saved_changes value.

Guys, I have a doubt about the correct way to implement code with rails.

In my Ruby on Rails app I have this model:

I have three models: Amod, Bmod and Cmod.