emberjs/ember.js — pull request #3656 by machty (2013-10-28 01:49:08+00:00)
Title: ["BUGFIX" beta] Improve unhandled action error messages

1) The comment about `return true` being a possible source of error
is incorrect; even if an action handler returns true, the action
is considered handled and it won't cause an error even if parent
routes don't handle the event.
2) 99% of the time, the only time people see the error about no
active handlers is when they try to call `Route#send` within
`model`, `beforeModel`, or `afterModel`. Most likely the solution
is to call `Transition#send` on the transition object passed into
the various model hooks, so I've updated the error message
to suggest using `Transition#send` instead.