Vue js rerender the same component when changing route

Question

I have one auth component that I am using both in the login and the signup route.

const routes = [{
  path     : '/',
  name: 'home',
  component: Home
}, {
  path     : '/signin',
  name: 'signin',
  component: Auth
},
  {
    path     : '/signup',
    name: 'signup',
    component: Auth
  }];

If for example, I'm on the login page The problem is if I type something in the text inputs and go to the signup the text is still there, how I force the component to reinitialize?

Answer 1

The better way to do this is actually to bind the routes path to the router-view's key, i.e.

<router-view :key="$route.path"></router-view>

Doing so will force Vue to create a new instance of the component.

EDIT

Updated to provide a meta key you could add which would allow you to disable the reuse of components only for the routes you require. this would need refining if you wanted to work with it on routes that are more than 1 level deep - but it gives you the idea.

const Foo = {
  name: 'foo',
	data () {
    	return {
        	inputText: '',
        }
    },
	template: `
    	<div class="box">
        	<h1>{{ $route.path }}</h1>
            <input type="text" v-model="inputText">
        </div>
    `,
}

const Baz = {
  name: 'baz',
	data () {
    	return {
        	inputText: '',
        }
    },
	template: `
    	<div class="box">
        	<h1>{{ $route.path }}</h1>
            <input type="text" v-model="inputText">
        </div>
    `,
}

const routes = [
  { path: '/foo', component: Foo, meta: { reuse: false }, },
  { path: '/bar', component: Foo, meta: { reuse: false }, },
  { path: '/baz', component: Baz },
  { path: '/bop', component: Baz }
]

const router = new VueRouter({
  routes
})

const app = new Vue({
  router,
  data: {
    key: null,
  },
}).$mount('#app')

router.beforeEach((to, from, next) => {
  if (to.matched.some(record => record.meta.reuse === false)) {
    app.key = to.path
  } else {
    app.key = null
  }
  next()
})

#content {
    position: relative;   
  height: 200px;
}

.box {
    position: absolute;
    top: 0;
    left: 0;
    width: 200px;
    height: 200px;
    background: rgba(0,0,0, 0.2);
    text-align: center;
    transform: translate3d(0, 0, 0);
}

<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://unpkg.com/[email protected]"></script>

<div id="app">
  <h1>Hello App!</h1>
  <p>
    <router-link to="/foo">Go to Foo</router-link>
    <router-link to="/bar">Go to Bar</router-link>
    <router-link to="/baz">Go to Baz</router-link>
    <router-link to="/bop">Go to Bop</router-link>
  </p>
  <div id="content">
      <router-view :key="key"></router-view>
  </div>
  <pre>{{ key }}</pre>
</div>

This then allows you to combine your router-view with Vues transition system so it becomes pretty awesome!