Assign belongs_to params to the association

[excid3]

Notifier.with(record: ...) assigns the record association and stores everything else in params. Apps that add another belongs_to to Noticed::Event, for example an account to scope events by tenant, have had to override with to pull it out of params and assign it themselves. Jumpstart Pro does this in an initializer, and it's the most common reason people add columns to noticed_events.

Now any param named after a belongs_to association on the notifier is assigned the same way record is:

class ApplicationNotifier < Noticed::Event
  belongs_to :account
end

CommentNotifier.with(account: @account, record: @comment, foo: "bar")
# => event.account == @account, event.record == @comment, event.params == {foo: "bar"}

Only belongs_to names are matched, so a param that happens to share a name with a column like type or params is left alone. Ephemeral notifiers are unchanged.

Adds a test with an AccountNotifier in the dummy app, a README note under the record: explanation, and a changelog entry.

https://claude.ai/code/session_013hc6NU5mH5ytMmHbiEVtK5

[excid3]

Closing this. Apps that need a default (like Jumpstart Pro's Current.account fallback) still have to override with, and that override can simply call super, so this saves very little. It isn't worth the breaking change for apps that already have a same-named association and read it from params.