Rails - Jan 2008 - acts_as_state_machine override :initial state

Hello,

I''m not sure if this is where to post this, but i cannot find much
information/support for acts_as_state_machine.

I have a Friendship model which implements acts_as_state_machine.  I
have an :initial state of :pending, but i would like to create a
Friendship model and save it directly with :accepted status.

I have tried Friendship.create(:state => "accepted") and
Friendship.new,
friendship.state = "accepted", .save!...but neither have worked.  The
only way i can accomplish this is by doing:
friendship = Friendship.create
friendship.state = "accepted"
friendship.save!

However, i do not like this since it has an unnecessary DB hit.  Anybody
know how i can do this?

thanks,
Adam
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You could modify set_initial_state in acts_as_state_machine.rb as
follows:

        def set_initial_state #:nodoc:
          write_attribute self.class.state_column,
self.class.initial_state.to_s if self.state.nil?
        end

That way if you specify an initial state it won''t assign the default
initial state in before_create. You''d probably also need to modify
run_initial_state_actions (which is run by the after_create callback)
along the lines of:

        def run_initial_state_actions
          if self.state.to_sym === self.class.initial_state.to_sym
            initial = self.class.read_inheritable_attribute(:states)
[self.class.initial_state.to_sym]
            initial.entering(self)
            initial.entered(self)
          end
        end

So that the actions for the default initial state don''t run.

This does rather defeat the purpose of using acts_as_state_machine
though. :-)




On Jan 7, 5:46 pm, Adam Walters
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> Hello,
>
> I''m not sure if this is where to post this, but i cannot find much
> information/support for acts_as_state_machine.
>
> I have a Friendship model which implements acts_as_state_machine.  I
> have an :initial state of :pending, but i would like to create a
> Friendship model and save it directly with :accepted status.
>
> I have tried Friendship.create(:state => "accepted") and
Friendship.new,
> friendship.state = "accepted", .save!...but neither have worked. 
The
> only way i can accomplish this is by doing:
> friendship = Friendship.create
> friendship.state = "accepted"
> friendship.save!
>
> However, i do not like this since it has an unnecessary DB hit.  Anybody
> know how i can do this?
>
> thanks,
> Adam
> --
> Posted viahttp://www.ruby-forum.com/.
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On Jan 7, 9:46 am, Adam Walters
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
> I have a Friendship model which implements acts_as_state_machine.  I
> have an :initial state of :pending, but i would like to create a
> Friendship model and save it directly with :accepted status.
The thing is, then you''ve no longer got a state machine. It''s
like
having a goto in code. Could the :initial state route it to :accepted?
As far as the db access goes, that''s generally the last thing you
should worry about, in my opinion.

///ark
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