Acts_as_state_machine error

Rails
1

If I try and change the state of an unsaved object I get the following
error. If I first save the object then do the call it is fine… is
this a known bug or am I doing something wrong? (most likely the
latter!)

pt.accept!
NoMethodError: You have a nil object when you didn’t expect it!
The error occurred while evaluating nil.to_sym
from vendor/plugins/acts_as_state_machine/lib/
acts_as_state_machine.rb:151:in current_state' from vendor/plugins/acts_as_state_machine/lib/ acts_as_state_machine.rb:92:innext_states’
from vendor/plugins/acts_as_state_machine/lib/
acts_as_state_machine.rb:92:in select' from vendor/plugins/acts_as_state_machine/lib/ acts_as_state_machine.rb:92:innext_states’
from vendor/plugins/acts_as_state_machine/lib/
acts_as_state_machine.rb:96:in fire' from vendor/plugins/acts_as_state_machine/lib/ acts_as_state_machine.rb:206:inaccept!’

2

acts_as_state_machine’s initial state is only set when saving your
object during a before_save callback

If you call a state transition when your current state is nil (i.e., a
new object) then you get the exact error you pasted :slight_smile:

Usually for new objects you DON’T set the state at all and let
acts_as_state_machine use its :initial option to save it for you.

3

Actually, what I discovered was that in my migration to add the state
(in my case status) column to the table I did not have a default value
set. When I added that the object got one too. A bit of a gotcha,
actually. Should be in the readme!

On Aug 8, 10:51 pm, “[email protected]” [email protected]