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