Bookmarking this incredible tool
Debugging AWS S3 for Rails Active Storage
It could be your CORS configuration for AWS S3 for Rails ActiveStorage
Refactoring Rails: Form Objects
Form objects let you work with many objects at once in rails. It's a pattern that's a lot more powerful and clean than accepts_nested_attributes.
Refactoring Rails: Callbacks
I've abused callbacks enough to know they have limits. This post is some summarized notes on the recommendations for using callbacks effectively.