Vue.js will re-run main.js where the main Vue instance is defined every time the route changes. Is that a normal behavior?
According to vue-router documentation, only router-specific components get their content changed along with routes. However, I added a simple console log call inside the main Vue instance created hook and it gets called after every route change.
// main.js
import App from './App.vue'
new Vue({
created() {
console.log('main created hook')
this.$store.dispatch(listenToAuthChanges)
},
render: h => h(App),
router,
store
}).$mount('#app')
// /router/index.js
import Router from 'vue-router'
import routerConfig from '#/config/routes'
import { requireAuth } from './navigationGuards'
const routes = Object.values(routerConfig)
.map(route => ({
...route,
component: () =>
import(
/* webpackChunkName: "route.component" */
`#/views/${route.component}.vue`
)
}))
const router = new Router({
mode: 'history',
base: process.env.BASE_URL,
routes
})
router.beforeEach(requireAuth)
<!-- App.vue -->
<template>
<router-view />
</template>
I would expect only the content inside 'router-view' to update after every route without triggering a full app reload which causes all initial data fetching and breaks authentication navigation guards.
Related
My first day with Vue. I initialized my app. I want to add a Login component, when I set routes in main.js, no page works.
import Vue from 'vue'
import App from './App.vue'
import VueRouter from 'vue-router'
import Login from './components/Login.vue'
const routes = [
{ path: '/', component: App },
{ path: '/login', component: Login }
]
const router = new VueRouter({
mode: 'history',
routes
})
new Vue({
router
}).$mount("#app")
Only works when I add render option to Vue object and renders the App component.
new Vue({
router,
render: h => h(App) // or Login
}).$mount("#app")
How will I ensure rendering route components?
You should add router-view component inside your App component like :
<template>
<div>
<router-view></router-view>
</div>
</template>
I have an App component and it renders fine. It's basically a component comprising two components.
App (Vue component):
1. Navigation // a menu bar with menu items
//like <router-link to="/">Home</router-link>
//like <router-link to="/contact">Contact</router-link>
2. Library // a component listing books.
I want to add another component Contact which I tried adding using vue-router, so I use the above navigation component. However, the routes don't seem to affect anything at all. What am I doing wrong?
My main.js file
const Contact = {
template: '<div>Contact Us</div>'
}
const routes = [
{
path: '/',
component: App // any change here also does not make any difference!!!
},
{
path: '/contact',
component: Contact, // this or any component doesnt make any difference!!!
}
];
const router = new VueRouter({
routes,
});
new Vue({
render: h => h(App),
router,
}).$mount('#app')
I have tried to access to others pages via url, but those pages never loads
http://localhost:8080/index
http://localhost:8080/about
This is my main.js file
import Vue from 'vue'
import App from './App.vue'
import vuetify from './plugins/vuetify';
import VueRouter from 'vue-router'
Vue.config.productionTip = false
Vue.use(VueRouter)
import Index from './views/Index';
const About = { template: '<p>about page</p>' }
const routes = [
{ path: '/index', name: 'index', component: Index },
{ path: '/about', name: 'about', component: About }
]
var router = new VueRouter({
routes: routes,
mode: 'history'
})
new Vue({
router: router,
vuetify,
render: h => h(App)
}).$mount('#app')
Does anyone can help me with vue-router? i am new in this framework
Does it work if you access them like this:
http://localhost:8080/#/about
If yes, your vue-router is working in the default hash-mode. To get rid of the hash and get "normal" URLs you'll need to set it to history mode.
Edit:
As I see you're already using history mode. Do you use Vue CLI for local development? This should normally work out of the box. If not, you need to setup some redirect rules on other web servers. Please see the examples here: Example Server Configurations
Edit 2:
Can you show your App component?
I tried to reproduce your problem in a sandbox, but it works: https://codesandbox.io/s/confident-voice-zyg07
The App component here looks like this, including the router-view:
<template>
<div id="app">
<router-view id="page"/>
</div>
</template>
<script>
export default {
name: "App",
components: {}
};
</script>
I am building a web app with two layouts (for login page, and dashboard). Each of them are represented as SPA application, so each has router-view. The main problem is 'How to connect them and redirect from one to another?'.
I have a App.vue - check if user is authorized. if yes - redirect to Dashboard.vue, else - redirect to Login.vue. Each of them has there own router-view.
An SPA should be a single html file which serves up your app and all the routes, so the basic structure should be:
HTML
<div id="app">
</div>
<!-- bundled file -->
<script src="app.js"></script>
app.js
import Vue from 'vue'
import VueRouter from 'vue-router'
Vue.use(VueRouter)
import App from './components/App.vue' // import Base component
// Import views to register with vue-router
import Login from './components/views/Login.vue'
import Dashboard from './components/views/Dashboard.vue'
const guard = function(to, from, next) {
// Check if user is logged in (you will need to write that logic)
if (userIsLoggedIn) {
next();
} else {
router.push('/login');
}
};
const routes = [{
path: '/login',
component: Login
},{
path: '/dashboard',
component: Dashboard,
beforeEnter: (to, from, next) => {
guard(to, from, next); // Guard this route
}
}]
const router = new VueRouter({
mode: 'history', // history mode
routes
})
new Vue({
el: '#app',
router,
render: h => h(App) // mount base component
})
App.vue
<template>
<div>
<!-- Your layout -->
<!-- All views get served up here -->
<router-view></router-view>
</div>
</template>
I haven't tested that, but in this scenario every view component gets served up by App.vue which is mounted on the main vue instance. You then use the beforeEach guard to check that the user is logged in, if they are then you call next() which takes them to the route, if they are not then you redirect them to login.
vue-router has the ability to create custom guards for any route. You do not need 2 separate applications, just some safety with the routes in your router.
https://router.vuejs.org/en/advanced/navigation-guards.html
Your guard could be a function that checks for authentication.
Here's a full implementation tutorial from Auth0: https://auth0.com/blog/vuejs2-authentication-tutorial/
Build A Single page app with vue 2 and vue-router 2 and vuex 2, but do not update
/src/main.js
import Vue from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'
import { sync } from 'vuex-router-sync'
sync(store, router)
new Vue({
router,
store,
...App
}).$mount('#app')
/src/router/index.js
import Vue from 'vue'
import routes from './routes'
import VueRouter from 'vue-router'
Vue.use(VueRouter)
const router = new VueRouter({
mode: 'history',
routes
})
export default router
/src/router/routes.js
import loader from './loader'
const routes = [
{ path: '/index', name: 'index', component: (r) => require(['./../views/index.vue'], r) }
]
export default routes
/src/store/index.js
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
const store = new Vuex.Store({
modules: {}
})
export default store
/src/view/index.vue
<template>
<div>
<h1>Hello index</h1>
</div>
</template>
<script>
import loader from './../../../router/loader'
export default {
name: 'index',
created () {
console.log('This is index')
}
}
</script>
/src/App.vue
<template>
<div id="app">
<router-link :to="'index'">index</router-link>
<router-view></router-view>
</div>
</template>
<script>
export default {
name: 'app',
mounted () {
console.log('Hello App')
}
}
</script>
I do not know what's wrong with the code, the <router-view> do not update when I change the route.
I think your app is not properly initialized yet. You are starting your app as follows:
new Vue({
router,
store,
...App
}).$mount('#app')
You have the spread operator ...App, which is not necessary - it is used to convert array items to function args, and not correct in this context. Instead you should use the render function as provided in webpack template :
/* eslint-disable-line no-new */
new Vue({
el: "#app",
store,
router,
render: h => h(App)
})
Also you have attempted to import loader in routes and index, which is not necessary if you are using vue-cli.
Maybe you can start with the webpack template as base and slowly add functionality one step at a time: start with route definitions and your route components, ensure that everything works, and finally add vuex.
$mount('#app') is fine, I think the problem is your routes.js
Try this instead:
import Index from './../views/index.vue'
const routes = [
{ path: '/index', name: 'index', component: Index }
]
And here is a working webpack template which is already configured vue-router and vuex properly, you can initialize this template via vue-cli, for your reference: https://github.com/CodinCat/vue-webpack-plus