RailsAdmin aasm

object_controller.rb

def change_state
  object = Object.find(params[:object_id])

  object.send(params[:event] + '!')

  redirect_to params[:redirect_to]
end

rails_admin.rb

edit do
  configure :change_aasm_state do
    pretty_value do
      links  = ""
      object = bindings[:object]
      view   = bindings[:view]
      events = object.aasm.events.map(&:name)

      events.each do |event|
        label = I18n.t event, scope: [:activerecord, :attributes, :object, :aasm_event]
        links += view.link_to(label, view.main_app.object_change_state_path(object, event: event, 
          redirect_to: view.rails_admin.edit_path(model_name: :object, id: object.id)),
          class: 'btn btn-default', method: :put)
      end

      links.html_safe
    end

    read_only true
  end

  fields :change_aasm_state
end