How to configure vue 3 router children properly to have nested routes working as expected?

Question

I am working on a vue 2 app using vue 3 router. I want to have a route like /user and within that /user/profile and /user/settings. So, I configured my vue router.js file as

router.js

import Vue from "vue";
import Router from "vue-router";
import User from "../components/User";
import Settings from "../components/Settings";
import Profile from "../components/Profile";

Vue.use(Router);

export default new Router({
  mode: "history",
  routes: [
    {
      path: "/user",
      name: "user",
      component: User,
      children: [
        {
          path: "/settings",
          name: "settings",
          component: Settings
        },
        {
          path: "/profile",
          name: "profile",
          component: Profile
        }
      ]
    }
  ]
});

User.vue

<template>
  <h1>User</h1>
</template>

Settings.vue

<template>
  <h1>Settings</h1>
</template>

Profile.vue

<template>
  <h1>Settings</h1>
</template>

App.vue

<template>
  <div id="app">
    <router-view></router-view>
  </div>
</template>

<script>
export default {
  name: "app",
};
</script>

<style>
#app {
  font-family: "Avenir", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>

Whenever I am visiting /user, the User.vue is rendered but when I am trying to visit /user/profile or /user/settings, nothing is rendered in the DOM. I followed Child route component not rendering in vue js and Activate router-link that has multi level nested routes with CRUD setup but no luck. What I want is User.vue should be rendered on /user route and only the contents of Profile.vue should be rendered when we are in /user/profile route. I tried to include <router-view /> in User.vue but I am getting both User.vue and Profile.vue contents in /user/profile. I am attaching codesandbox link to see it in live and to get a better understanding as I am not sure how to set it up in SO.

Link: https://codesandbox.io/s/nostalgic-sky-3wvhqr?file=/App.vue:0-354

How can I achieve this?

Answer 1

UserParent.vue

<template>
  <router-view />
</template>

router.js

routes: [
  {
    path: "/user",
    component: UserParent,
    children: [
      {
        path: "/",
        name: "user",
        component: User
      },
      {
        path: "/settings",
        name: "settings",
        component: Settings
      },
      {
        path: "/profile",
        name: "profile",
        component: Profile
      }
    ]
  }
]