import { VantComponent } from '../common/component'; import { useChildren } from '../common/relation'; VantComponent({ field: true, relation: useChildren('radio'), props: { value: { type: null, observer: 'updateChildren', }, direction: String, disabled: { type: Boolean, observer: 'updateChildren', }, }, methods: { updateChildren() { this.children.forEach((child) => child.updateFromParent()); }, }, });