Comments on: state_machine: One machine to rule them all?

By: aaron

aaron — Sun, 14 Mar 2010 21:25:11 +0000

Aaron Cohen – Please ask questions like this on the mailing list if you still need help. Thanks

By: Aaron Cohen

Aaron Cohen — Fri, 19 Feb 2010 23:53:59 +0000

If a transition fails due to a validation on the state being transitioned to, how can one determine which validation caused the failure?

I have a very simple case (everything non-essential has been trimmed) -

state_machine :status, :initial => :unpublished do
event :publish do
transition :unpublished => :published
end
state :published do
validate :start_at_in_future
end
end

def start_at_in_future
errors.add(:start_at, ‘must be in the future’) unless start_at > Time.zone.now
end

should “validate that the start_at is in the future to perform a publish transition” do
@deal.start_at = Time.zone.now – 1.second
assert @deal.can_publish? # wish this would return false, but understand why it doesn’t
assert !@deal.publish
assert !@deal.published?
pp @deal.errors.inspect # no errors; how to tell the web GUI what went wrong?
end

Thanks for any advice/recommendation you have!!

By: fisons

fisons — Thu, 24 Sep 2009 08:05:01 +0000

I watch you! (@github)

By: cies

cies — Fri, 18 Sep 2009 13:25:24 +0000

this code is soooo pretty — it nearly made me cry..

thanks! im gonna use it with dm tomorrow (ok, i lie: monday).

By: Ennuyer.net » Blog Archive » I am way behind on my rails link blogging. Link dump and reboot.

Sat, 09 May 2009 10:48:17 +0000

[...] state_machine: One machine to rule them all? | PluginAWeek [...]

By: Ennuyer.net » Blog Archive » 2009-05-09- Today’s Ruby/Rails Reading

Ennuyer.net » Blog Archive » 2009-05-09- Today’s Ruby/Rails Reading — Sat, 09 May 2009 09:55:23 +0000

[...] state_machine: One machine to rule them all? | PluginAWeek [...]

By: aaron

aaron — Thu, 07 May 2009 00:13:19 +0000

@Phillip You can post messages on the PluginAWeek-Talk Google Group. It looks like your error message didn’t quite make it through the filters. My guess based on what made it through is that the library wasn’t loaded properly (assuming you’re loading it via a gem). If you post something up on the Google Group, myself or others would be more than happy to help out there. Best of luck!

By: Phillip Med

Phillip Med — Wed, 06 May 2009 19:24:11 +0000

Actually i read above..and found it…….

I keep getting this:

undefined method `state_machine’ for #

By: Phillip Med

Phillip Med — Wed, 06 May 2009 19:08:44 +0000

is there a group out there for support and for installation instructions? Thanks

By: aaron

aaron — Sun, 05 Apr 2009 20:36:23 +0000

@John – You’re exactly right… I misinterpreted the question as a list of states that are allowed to be transitioned to from the current state. Thanks for helping out!

@Scott – Great feedback! Glad to hear it’s helped