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Subject: [Rails] Re: staying RESTful and triggering actions without saving a 
	record.
From: Aaron Pfeifer <aaron.pfei...@gmail.com>
To: "Ruby on Rails: Talk" <rubyonrails-talk@googlegroups.com>
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Hey Frank,

state_machine actually provides support for executing events using a
standard REST interface.  Rather than calling the event method
directly (such as "release!"), you can set an the machine's event
attribute like so:

  station.state_event =3D 'release'
  station.save!

Any event that gets set in "state_event" will be validated and fired
when the record is saved.  There's a full example (model, controller,
and views) of this here: http://github.com/pluginaweek/state_machine/tree/m=
aster/examples/rails-rest

Hope this helps!

-Aaron

On May 17, 10:50=A0pm, "frankjmat...@gmail.com" <frankjmat...@gmail.com>
wrote:
> the example i'm making uses state_machine because it's part of my
> current setup but this isnt a state_machine specific problem.
>
> i have a model called Station. it's an abstract concept for "an area
> in which work is performed"... when i'm using the app the Stations
> could be anything from "simulation terminal A" to "the lathe in
> building C"...
>
> each station has various properties (one of which is conveniently
> "state") and i would like to use buttons on my form (or links if it
> can be done in an xss safe way) to immediately change one of those
> properties... one button for example may be "release to floor" which
> when clicked would - in a non restful app - call the "release" action
> on the station controller. the release action would then take the
> station and call "release!" on it... however i want to accomplish this
> using standard actions.
>
> just using a text box and "saving" the record doesn't automatically
> fire the state-changing events (which i think is a good thing) AND
> that type of structure does not relate to my problem in a convenient
> way... there's a handful of cases where i just want to have a few
> buttons peppered in my form that when clicked, perform a direct action
> on my object without having to "invent" a bunch of non-standard
> actions..
>
> any tips?
> thank you much,
> - FJM
>
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