我试图将一个“动作”从控制器传递到当前模板的孙组件。但是由于某种原因失败了。有人能告诉我我在这里遗漏了什么吗？

MainTemplate's Router Controller

export default class MainTemplateController extends Controller {

  field = "userId";

  @action
  save () {
    //save data
  }

}

MainTemplate.hbs

<ChildComponent @field={{this.field}} @save={{this.save}} /> 

ChildComponent.hbs 

<GrandChildComponent @field={{this.field}} @save={{this.save}} />

GrandChildComponent.hbs

<button @onClick={{action "doSomething" (readonly @field)}}>Save</button>

export default class GrandChildComponent extends Component {    
    @action
    doSomething(fieldName) {
        console.log(fieldName); // logs as "userId"
        console.log(this.args.save) // undefined
    }    
}