module WorkflowSequel

# File app/sequel_workflow_presistence.rb, line 16
def before_validation
  send( "#{self.class.workflow_column}=", current_state.to_s ) unless send( self.class.workflow_column )
  super
end

# File app/sequel_workflow_presistence.rb, line 11
def dataset_update( attrs )
  @@whitelist ||= (self.columns - [:id]).freeze
  self.class.instance_dataset.where( id: id ).update( attrs.delete_if{|k,v| [:id, 'id'].include?(k) } )
end

# File app/sequel_workflow_presistence.rb, line 2
def load_workflow_state
  send( self.class.workflow_column )
end

# File app/sequel_workflow_presistence.rb, line 6
def persist_workflow_state(new_value)
  send( "#{self.class.workflow_column}=", new_value )
  save( changed: true, validate: false)
end