right now, I'm writing a single-page-application in vue.js using vue-router. Pages like the homepage, sign-in page etc. all share a navigation and footer component. On a few pages however, I need the entire screen so that the navigation and footer shall not be displayed.
Hence, I decided to nest components and include the navigation and footer component when necessary. My problems now is, that the navigation and footer template disappeared on all pages.
Edit: A more complete demo can be found in this Github repository.
Here's a simplified version of the files I'm using:
index.html:
<div id="app">
<router-view></routerview>
</div>
router.js:
import Homepage from './homepage.vue';
import SignIn from './signin.vue';
const router = new VueRouter({
routes: [
{path: '/', component: Homepage},
{path: '/signin', component: SignIn},
]
})
homepage.vue and signin.vue components:
<template>
<navigation></navigation>
// some page-specific content
<footer-vue></footer-vue>
</template>
<script>
import Navigation from './navigation.vue';
import Footer from './footer.vue';
export default {
components: {
'navigation': Navigation,
'footer-vue': Footer,
},
}
</script>
A component without navigation and footer:
<template>
// some page-specific content
</template>
Is it even possible to nest components this way? I hope someone is able to point me into the right direction.
Both homepage.vue and signin.vue have invalid templates. e.g.
<template>
<navigation></navigation>
<h1>The homepage</h1>
<footer-vue></footer-vue>
</template>
This is not allowed as it has 3 root nodes. See https://v2.vuejs.org/v2/guide/components.html#A-Single-Root-Element
You need to wrap it to get it to work:
<template>
<div>
<navigation></navigation>
<h1>The homepage</h1>
<footer-vue></footer-vue>
</div>
</template>
Note that this limitation does not apply to functional components and is also expected to be lifted for all components in Vue 3.
Much more worrying is that you're not seeing any errors messages for this. You really need to look into that as it suggests there's something very much amiss with your development setup.
An example of the error message you should be seeing:
new Vue({
el: '#app',
template: '<div></div><div></div>'
})
<script src="https://unpkg.com/vue#2.6.10/dist/vue.js"></script>
<div id="app">
</div>
Related
Sorry to revive a question. Im using Angular 7 and Im trying to use Router Link.
This is my app-routing-module
const routes: Routes = [
{ path: 'locations' , component : LocationManagerComponent },
{ path: 'locations/create' , component : CreateEditLocationComponent },
{ path: 'locations/create/:id', component : CreateEditLocationComponent },
{ path: '404' , component : PageNotFoundComponent},
{ path: '**' , redirectTo: '/404'}
];
#NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule]
})
export class AppRoutingModule { }
This is router link:
<a [routerLink] = "['/locations']" routerLinkActive="active"> test link </a>
When I click on link, nothing happens. The URL on browser changed but component is not loaded.
If I press F5, component is loaded and from that point on, routers link works.
I've tryed a lot of stackoverflow solution like writing link in any sort of variant like
<a routerLink="/locations" ...
<a [routerLink]= ['/locations'] ...
<a [routerLink]= "['/locations']" ...
With or without LinkAttive attribute. Putting
<base href="/">
in index.html etc....
Following this topic: TOPIC I've tried to include Router in my Layout component:
import { Component, OnInit } from '#angular/core';
import { ActivatedRoute } from '#angular/router';
#Component({
selector: 'app-layout',
templateUrl: './layout.component.html',
styleUrls: ['./layout.component.css']
})
export class LayoutComponent implements OnInit {
constructor(
private route : ActivatedRoute
) { }
[...]
but nothing changes.
The strange part is that after an F5, all routes works, even route to component not yet loaded.
In this topic TOPIC 2 the user resolved removing css class. I've tried to put my link in a completely cleaned component HTML and it not working (but still works after a refresh).
<p>
dashboard works!
<a routerLink = '/locations' routerLinkActive="active"> test link </a>
</p>
UPDATE: This is layout.component where route tag is.
I can't figure out how to have a Sidenav without having route-outlet inside it.
<mat-sidenav-container fullscreen>
<mat-sidenav #sidenav mode="over">
<div class="profile_container">
<span> User Name </span>
</div>
<mat-nav-list>
<mat-list-item><a [routerLink]="['/locations']" routerLinkActive="active"> Locations
</mat-nav-list>
</mat-sidenav>
<mat-sidenav-content>
<app-header (toggleSidenav)="sidenav.toggle()"></app-header>
<div style="padding: 20px 10px 10px 20px;">
<router-outlet></router-outlet>
</div>
</mat-sidenav-content>
</mat-sidenav-container>
Note: this answer is based on the previous version of your question, before you added the code of layout.component.html. So, instead of layout component, I am using the simplified dashboard component.
The below is working for me in Angular 8.1.
app.component.html
<app-dashboard></app-dashboard>
means that the DashboardComponent is contained within (is the child of) the AppComponent.
No change to the default app.component.ts
dashboard.component.html
<p>
dashboard works!
<a routerLink = '/locations' routerLinkActive="active">
Locations test link </a>
</p>
<p><a routerLink = '/locations/create' routerLinkActive="active">
Locations/create </a></p>
<p><a routerLink = '/locations/create/:id' routerLinkActive="active">
Locations/create/:id </a></p>
<p>router-outlet is below:</p>
<router-outlet></router-outlet>
All the links are working with click and with manually entering the url (eg: http://localhost:4200/locations/create/:id) in the browser and with reload (F5).
New Components
Generated using the ng generate component command:
Dashboard
LocationManager
CreateEditLocation
PageNotFound
app-routing-module.ts
The same as your file, but also added import statements for the newly generated components.
I figured what cause the problem but I can't unserstand why and I was not able to reproduce in StackBlitz.
This was my app.component.html, the root of all app:
<main>
<!-- Showing All Site Pages -->
<span *ngIf='isLogged()'>
<app-layout style="height:100%"></app-layout>
</span>
<!-- Showing Login Page -->
<div *ngIf='!isLogged()'>
<router-outlet></router-outlet>
</div>
</main>
The App-Layout code is above.
THIS NOT WORKS!
I changed it with a simply:
<main>
<app-layout style="height:100%"></app-layout>
</main>
As you see from my question, Layout has its own router-outlet.
I think the problem is the two router-outlet tag. Maybe Angular is not able to understand thats they are mutually exclusive. Maybe when I was clicking on menu, for some reason, Angular was updating the "first" router-outlet encountered and only after a refresh (F5), when the isLogged was already triggered and the app-layout was loaded directly, Angular knows which router-outlet to use.
In the new Way all pages, even Login, has to be child of AppLayout so every Layout component that's exists only if logged, has to be manually hide with *ngIf='!isLogged()'
A little price to pay to have routes works.
I am trying to build a layout using single-file components in Vue.js, with dynamic population and URLs using Vue-router. (I'm using the webpack template via vue-cli as well.)
It works as expected for my app.vue file-- containing the nav, sidebar, page head, and <router-view>-- and the <router-view> content appeared as expected when the correct <router-link> is clicked... until I tried to add subcomponents to the add-load component being called to the <router-view>. Now, nothing appears at all, despite not throwing any errors.
Admittedly, I am not basing my structure on any examples, as I couldn't really find any doing it the way I was hoping to. I wanted to use nested components by calling them like custom elements-- I think this makes the code much easier to read and maintain. I'm not entirely sure how to structure it otherwise, to be honest. Using multiple <router-view>s as siblings to each other seems counterintuitive to me.
I've tried a variety of combinations of how and where to import and call the components, and nothing has worked. The only way I can get any content to load is if I only call a single component for path: '/add-load'. Is it just impossible to use multiple components outside of your base app.vue? I find that hard to believe. Here's what I started with.
From my index.js:
import AddLoad from '#/components/AddLoad'
import AddLoad from '#/components/ProgressSteps'
import Stops from '#/components/Stops'
Vue.use(Router)
export default new Router({
routes: [
{
path: '/',
components: {
Sidebar,
TopNav,
MobNav,
PageHead
}
},
{
path: '/add-load',
components: {
AddLoad,
ProgressSteps}
}
]
})
From my App.vue file (the multiple component behavior that I'd like to mimic is shown here):
<template>
<div id="app">
<div class="wrapper">
<Sidebar/>
<div class="container-fluid">
<TopNav/>
<MobNav/>
<div class="container-fluid">
<PageHead/>
<router-view></router-view>
</div>
</div>
</div>
</div>
</template>
<script>
import Sidebar from '#/components/Sidebar'
import TopNav from '#/components/TopNav'
import MobNav from '#/components/MobNav'
import PageHead from '#/components/PageHead'
export default {
name: 'App',
components: {
Sidebar,
TopNav,
MobNav,
PageHead
}
}
</script>
From my AddLoad.vue file:
<template>
<div class="add-load">
<div class="content-container container-slim">
<progress-steps/>
<router-link to="#stops">Stops</router-link>
<router-view></router-view>
</div>
</div>
</template>
<script>
import ProgressSteps from '#/components/ProgressSteps'
export default {
name: 'AddLoad',
component: ProgressSteps
}
</script>
Here is a link to a codesandbox, so you can see the full functionality. https://codesandbox.io/s/7k520xk0yq
I have actually 2 global components one for Admin and other one for Modal. The Admin component have a child comp called Page and the Page comp have others childs. I want to pass content directly to Page comp via slots. Like this:
app.js
new Vue({
el: '#app',
components: { Admin, Modal }
})
Admin.vue
<template>
<div>
<page>
<slot></slot>
</page>
</div>
</template>
export default {
components: { Page }
}
Page.vue
<template>
<div>
<page-header>
<slot name="page-header">
<h1 class="page-title">
<slot name="page-title">
Page Title
</slot>
</h1>
</slot>
</page-header>
<page-body>
<slot>
Page Body
</slot>
</page-body>
<page-footer>
<slot name="page-footer">
Page Footer
</slot>
</page-footer>
</div>
</template>
export default {
components: {
pageHeader,
pageBody,
pageFooter
}
}
index.html
<admin>
<div slot="page-header">
Header Test
</div>
Body Test
<div slot="page-footer">
Footer Test
</div>
</admin>
I don't need to use Page as global component, Please any idea?? Hope you understand what I'm looking for...
Thanks
I don't think slots are designed to do this. If you need data to be persisted between parent and children then use either props as #Belmin Bedak suggested. When you pass a prop to a component it will be available to all its children.
If you need to persist state on front-end I strongly recommend using Vuex as source of data for all components ( only use if it becomes more complex to have data scattered across components ).
How can I use template inheritance (Like what jade has, extends file.jade and then the blocks with the same name would be overwritten)?
I know that I can do everything with composition, but for components like footer and header which appear on every single page except one or two (e.g.login page) I must write them on every single component. In my app I have a two level navigation and it seems painful to repeat them on every one of those child components :(
I know that I can use jade and then inherit a jade file within my components, but it seems wrong because I would have some jade and some Vue files, is there any other way to do this?
// Component.vue
<template lang="jade">
extends ./StandardLayout
block content
router-view
</template>
// StandardLayout.Vue
<template lang="jade">
div
navbar
div.container
div.spacer
div.row
block content
<template>
What I've settled for, is a layouts folder filled with jade layouts and I use them to extend my components. I used vue-cli with webpack template.
In the most general case if you have to repeat the same HTML over and over, one option you could use is <partial>s.
<partial name="header"></partial>
<div>My content content</div>
<partial name="footer"></partial>
Where you declare partials as
Vue.partial('header', '<h3>This is the title: {{title}}</h3>')
Vue.partial('footer', '<footer>Mini footer</footer>')
However if you are building a Single Page Application the strategy you could follow is to simply have a header and a footer around your <router-view>, here is a jsfiddle that demonstrates how to do.
https://jsfiddle.net/gurghet/vdqutw2y/
<header><h1>
My title: {{title}}
</h1></header>
<p>
<a v-link="{ path: '/foo' }">Go to Foo</a>
<a v-link="{ path: '/bar' }">Go to Bar</a>
</p>
<router-view></router-view>
<footer>Such footer, many links, wow!</footer>
If you know Chinses, please look it
// Base Component
<template>
<div class="base-thing special-class">
<Button />
</div>
</template>
<script>
import Button from './ButtonClick'
export default {
components: { Button }
}
</script>
// Inheriting Component
<script>
import BaseComponent from './BaseComponent'
import Button from './OtherButton'
export default {
extends: BaseComponent
components: {
Button
}
}
</script>
The Button of Child Component will be replaced OtherButton. We can do something in the OtherButton
I have three main components for a dashboard UI I'm working on (I'm a React beginner, coming from Angular): a sidebar, top nav, and a content container.
How would I split these into three separate UI components and call them in other components? I want to be able to do this:
<Sidenav /> <!-- sidenav component from Sidenav.js -->
<section className="content">
<Topnav /> <!-- top nav component from Topnav.js -->
<div className="wrapper container">
<!-- Content here -->
</div>
</section>
And also, how would you use the <div className="wrapper container"></div> as a view for all content?
I'm using ES6 and the React Starterify app kit.
This is how I would do it (you'll notice I name all my component files .jsx instead of .js, though it doesn't matter either way. I've even seen people do Component.jsx.js):
src/index.html
<html>
<head>
...
</head>
<body>
<script src="js/bundle.min.js"></script> <!-- I'm assuming you're using Browserify or similar to bundle the entire app into a single file -->
</body>
</html>
src/js/main.js
import React from 'react';
import {render} from 'react-dom';
import {Routes} from '../components';
render(Routes, document.body);
src/components/App.jsx
import React from 'react';
import Topnav from './Topnav';
module.exports = React.createClass({
displayName: 'App',
propTypes: {
children: React.PropTypes.shape({
props: React.PropTypes.object
})
},
render () {
return (
<section className="content">
<Topnav />
<div className="wrapper container">
{this.props.children}
</div>
</section>
);
}
});
{this.props.children} will render the component that is handling the current route.
src/components/Topnav.jsx
...
Think of it the same way you would create grouping in an object-oriented language like Java. Components that belong with each other should go together. So, for example, if I had to write a Profile component, that might look like:
-- src
-- components
-- profile
-- index.js // Used to export Profile
-- Profile.jsx // This would have the profile layout and be a parent to all other components in this folder
-- Address.jsx
-- Gravatar.jsx
-- ...