Transition class generated for mongoid is broken

[tomclose]

Using the transition class generated for the mongoid adapter will lead to errors like:

NameError: undefined method `statesman_metadata' for class ...

This is because the include Statesman::Adapters::MongoidTransition tries to alias statesman_metadata, which isn't defined at that point.

A short term fix is to move this line below field :statesman_metadata:

class OrderTransition
  include Mongoid::Document

  field :to_state, type: String
  field :sort_key, type: Integer
  field :statesman_metadata, type: Hash

  # this has to be after the statesman_metadata declaration
  include Statesman::Adapters::MongoidTransition
  # ....

A longer term solution could involve declaring the fields in Statesman::Adapters::MongoidTransition module, similar to how it is done here: https://github.com/aq1018/mongoid-history/blob/master/lib/mongoid/history/tracker.rb.

[tomclose]

Actually this issue, #27 and #28 are all fixed by just removing the line include Statesman::Adapters::MongoidTransition.

It seems that Statesman::Adapters::MongoidTransition is incompatible with the mongoid generator.

[greysteil]

@tomclose - sorry this took so long!