VueJS组件显示并将项目传递给组件

我正在使用VueJS 2.0和vue-router 2，我正在尝试根据路由参数显示模板 . 我正在使用一个视图（WidgetView）并更改该视图中显示的组件 . 最初我展示了一个小部件列表组件（WidgetComponent），然后当用户在WidgetView的WidgetComponent中选择一个小部件或新按钮时，我想要将WidgetComponent交换出来并显示WidgetDetails组件，并将信息传递给该组件：

WidgetComponent.vue：

<template>
...
<router-link :to="{ path: '/widget_view', params: { widgetId: 'new' }  }"><a> New Widget</a></router-link>
<router-link :to="{ path: '/widget_view', params: { widgetId: widget.id } }"><span>{{widget.name}}</span></router-link>
</template>
<script>
  export default {
    name: 'WidgetComponent',
    data() {
      return {
        widgets: [{ id: 1,
        name: 'widgetX',
        type: 'catcher'
      }]}
    }
  }
</script>

WidgetView.vue

<template>
  <component :is="activeComponent"></component>
</template>
<script>
  import WidgetComponent from './components/WidgetComponent'
  import WidgetDetail from './components/WidgetDetail'
  export default {
    name: 'WidgetView',
    components: {
      WidgetComponent,
      WidgetDetail
    },
    mounted: function () {
      const widgetId = this.$route.params.widgetId
      if (widgetId === 'new') {
        // I want to pass the id to this component but don't know how
        this.activeComponent = 'widget-detail'
      }
      else if (widgetId > 0) {
        // I want to pass the id to this component but don't know how
        this.activeComponent = 'widget-detail'
      }
    },
    watch: {
      '$route': function () {
        if (this.$route.params.widgetId === 'new') {
          // how to pass id to this compent?
          this.activeComponent = 'widget-detail'
        }
        else if (this.$route.params.widgetId > 0){
          // how to pass id to this compent?
          this.activeComponent = 'widget-detail'
        }
        else {
          this.activeComponent = 'widget-component'
        }
      }
    },
    data () {
      return {
        activeComponent: 'widget-component',
        widgetId: 0
      }
    }
  }
</script>

WidgetDetail.vue

<template>
<option v-for="manufacturer in manufacturers" >
    {{ manufacturer.name }}
</option>
</template>
<script>
   export default {
     props: ['sourcesId'],
     ...etc...
   }
</script>

router.js

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/widget_view',
      component: WidgetView,
      subRoutes: {
        path: '/new',
        component: WidgetDetail
      }
    },
    {
      path: '/widget_view/:widgetId',
      component: WidgetView
    },
  ]

}）

我无法让路由参数工作，但我设法通过硬编码路由来获得路由，即

<router-link :to="{ path: '/widget_view/'+ 'new' }"> New Widget</router-link>

但我不知道如何从WidgetView中的脚本（而不是模板）代码将id传递给给定的模板 .