Method: Fabulator::Core::Structurals::StateMachine#run_transition

Defined in:
lib/fabulator/core/structurals/state_machine.rb

#run_transition(best_transition) ⇒ Object 



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# File 'lib/fabulator/core/structurals/state_machine.rb', line 84

def run_transition(best_transition)
  return if best_transition.nil? || best_transition.empty?
  current_state = @states[@state]
  t = best_transition[:transition]
  @missing_params = best_transition[:missing]
  @errors = best_transition[:messages]
  if @missing_params.empty? && @errors.empty?
    @state = t.state
    # merge valid and context
    best_transition[:valid].sort_by { |a| a.path.length }.each do |item|
      p = item.path.gsub(/^[^:]+::/, '').split('/') - [ '' ]
      n = @context.traverse_path(p, true).first
      n.prune
      n.copy(item)
    end
    # run_post of state we're leaving
    begin
      current_state.run_post(@context)
      t.run(@context)
      # run_pre for the state we're going to
      new_state = @states[@state]
      new_state.run_pre(@context) if !new_state.nil?
    rescue Fabulator::StateChangeException => e # catch state change
      new_state = @states[e]
      begin
        if !new_state.nil?
          @state = new_state.name
          new_state.run_pre(@context)
        end
      rescue Fabulator::StateChangeException => e
        new_state = @states[e] 
        retry
      end
    end
  end
end