Deleting an account destroys its `goal_accounts` rows (Account has_many
:goal_accounts, dependent: :destroy). Any goal funded only by that account
survives with zero links and permanently fails
`must_have_at_least_one_linked_account`. Two bugs made that state a dead end.
`#update` saved the attributes before attaching the submitted accounts, so
validation ran against the goal's old (empty) link set and raised before the
new links were applied. Editing was the only route back to a valid goal, and
it always returned 422. Assign, sync the links, then persist once — one save
over the fully assembled goal validates what the user actually submitted.
`perform_transition!` discarded the return value of AASM's bang event. AASM
returns false rather than raising when the save that persists the new state
fails validation, so an invalid goal flashed "Goal archived." while the state
never moved. Check the result and surface the validation error instead.
Neither fix changes behaviour for a valid goal: the bang events return true
on success, and the update path persists the same attributes and links as
before.
This does not change what happens to a goal when its account is deleted —
whether the goal should follow the account, block the deletion, or be
surfaced as needing attention is a product decision left open. It only makes
the resulting state recoverable and stops the UI reporting success when
nothing happened.
Guillem Arias Fauste
f1ddbcd1b5