angular - html issue (routing takes place with app component html) - html

Building a simple application.
The app is loading with the contents of app.component.html.
There are some menu items like About Us page, contact Us page.. etc
The problem is - When I route to any of these pages, the content of app.component.html is displayed along with the content of contact.component.html when I click on contact us page.
Is there a way to remove the app content when the route to another component has taken place

You have to use <router-outlet></router-outlet> in your app.component.html and create a new component for your home page and do as following in Routes :
import {Routes, RouterModule} from '#angular/router';
import {HomeComponent} from './home/home.component';
import {AboutUsComponent} from './aboutus/aboutus.component';
import {ContactUsComponent} from './contactus/contactus.component';
const appRoutes: Routes = [
{path: '', component: HomeComponent},
{path: 'aboutus', component: AboutUsComponent},
{path: 'contactus', component: ContactUsComponent},
]

Related

why the html content not shown out when running

Now i use visual studio code to do my project. I can build my code without error, but when running, it no show out the content for html file, only have show css like header abd footer. i have click button on header but cannot go to other page.Here is the sample code
code in index.html
<nav>
List
New student
Student feedback
</nav>
Vue router
const router = new VueRouter({
routes: [
{ path: '/home', component: load('home') },
{ path: '/insert', component: load('insert') },
{ path: '/update/:id', component: load('update') },
{ path: '/feedback', component: load('feedback') },
{ path: '*', redirect: '/home' }
]
});
File name and type: _home.html, _insert.html, _update.html, _feedback.html
Can help me see the problem, thank you
I don't think you should edit directly to index.html as Vue is Single Page Application (SPA) framework. Instead, you should use Vue Component for each page.
This video might help you to figure out how to use Vue and Vue Router properly: https://youtu.be/nnVVOe7qdeQ
Edit:
For sake of clarity, Let me build simplified diagram of Vue project for you.
First of all, make sure you create the project via vue cli. It guides you to build your new vue project better.
Let's say we have 3 pages:
Home
About
Another
Each page has its own CSS, HTML (we call it template), and JavaScript in one file, the .vue file. To connect them, we need a first entrance, main.js. Inside of it, we can configure the router.
Inside main.js
import Vue from "vue";
import VueRouter from "vue-router";
import App from "./App.vue";
import HomePage from "./HomePage.vue";
import AboutPage from "./AboutPage.vue";
import AnotherPage from "./AnotherPage.vue";
// This is your router configuration
Vue.use(VueRouter);
const router = new VueRouter({
[
{ path: "/", component: HomePage },
{ path: "/about", component: AboutPage },
{ path: "/another", component: AnotherPage },
],
mode: "history",
});
// Initialize Vue App
new Vue({
router,
render: h => h(App),
}).$mount("#app");
Then, we need to create App.vue and put <router-view /> inside of it.
Inside App.vue source file
<template>
<div id="app">
<router-view />
</div>
</template>
<script>
export default {
// Keep this empty. Except if you
// need to add sidebar or any else.
}
</script>
Now you're ready to create those three pages
Every pages looks like this:
<style scoped>
// Your CSS here
</style>
<template>
<div>
<!-- Your HTML here -->
</div>
</template>
<script>
export default {
data() {
return {
// Your reactive data here
}
},
mounted() {
// Your script here
},
methods: {
// Your functions here
},
}
</script>
That's all I can explain, hope it helps. If I missed something, please don't hesitate to tell me. Thank you!

Angular: Route from Card to a new View

I am working on an exercise project in Angular (latest V).
My App instanciates bootstrap cards dynamically from an Order Array and show them on my "Order-Item-Component through my template.
I added Routing so that I can update my OrderId on the Browser-Link after a click. It is working.
What I want is: If a user clicks on one of my cards - a whole new View Opens with my Order-Detail-Component for that specific Id. My cards should be invisible in that view. Subsequently, the user can go back to the cards-view with 'back' Link.
I don't know how to route so that my cards are going to be replaced by the Detail View.
Where do I have to place my 'router-outlet' for the detail-comp? I know, that I cannot place it in the same View as my Order-Component - because there are both visible in this case.
Here is my app.routing.ts: (The first route for orders is working fine)
import {RouterModule, Routes} from '#angular/router';
import {OrderComponent} from './order/order.component';
import {ORDER_ROUTES} from './order/order.routes';
import {OrderDetailComponent} from './order/order-detail/order-detail.component';
const APP_ROUTES: Routes = [
{ path: '', redirectTo: '/orders', pathMatch: 'full'},
{ path: 'orders', component: OrderComponent},
{ path: 'orders/:id', component: OrderDetailComponent
];
export const routing = RouterModule.forRoot(APP_ROUTES);
Here is my Order.Component.html:
<div class="container-fluid"><br>
<h2 id="heading-order"><i class="fa fa-shopping-cart f-left "></i>Open Orders</h2>
<p id="heading-items"> {{ orders.length }} Items </p>
</div>
<app-order-list></app-order-list>
<app-order-completed></app-order-completed>
Thanks in advance.
You might be able structure your app this way:
app.component.html:
<router-outlet></router-outlet>
routing module:
const APP_ROUTES: Routes = [
{ path: '', redirectTo: '/orders', pathMatch: 'full'},
{ path: 'orders', component: OrderComponent},
{ path: 'order-details/:id' component: OrderDetailsComponent}
];
order.component.html:
Provide [routerLink]="['/order-details', id] on your card, and pass the parameters to identify cards
Order component can also include <order-completed> in the view, if you need the completed orders to behave the same way, have them link to order details in the same way as the other orders.
To navigate back to the list of order, in your order-details.component.html provide a router link like routerLink="/orders"
You would use <router-outlet> instead of the custom tags <app-order-list></app-order-list>, <app-order-completed></app-order-completed> in your app component.
This way you can create child views:
const APP_ROUTES: Routes = [
{ path: '',
pathMatch: 'full',
component: OrderComponent,
children: [
{ path: 'order-list', component: OrderListComponent},
{ path: 'orders-completed', component: OrderCompletedComponent},
]},
];
And this is how the OrderComponent would look like:
<div class="container-fluid"><br>
<h2 id="heading-order"><i class="fa fa-shopping-cart f-left "></i>Open Orders</h2>
<p id="heading-items"> {{ orders.length }} Items </p>
</div>
<router-outlet></router-outlet>
Then use routerLink="/orders-completed" on a <button> or <a> tag to navigate

How do I replace entire html with another html (Angular 2)

app.component.ts
<div>
<app-head></app-head>
<app-body></app-body>
</div>
head.component.ts
...
#Component({
selector: 'app-head',
templateUrl: './head.component.html',
styleUrls: ['./head.component.scss'],
providers: []
})
...
body.component.ts
...
#Component({
selector: 'app-body',
templateUrl: './body.component.html',
styleUrls: ['./body.component.scss'],
providers: []
})
...
So the pages loads with content head + body but now I wanted to route to a different page and replace entire existing page with the new page. How do I do that?
In my app.module.ts I have the following...
const routes: Routes = [
{ path: 'newPage', component: NewComponent}
]
I wanted use when clicked a button to be redirected to this page and replace existing <app-head> and <app-body> is this possible?
If I just use below I still see the current <app-head> and <app-body>
<button type="button" (click)="loadNewPage()" >
body.component.ts
loadNewPage() {
this.router.navigate(['/newPage']);
}
The results give me the current page.... and doesnt really apply since I am not concating the contents together. I want to replace the head.html and body.html with newpage.html from the NewComponent.ts
You need to replace the content in AppComponent with a router-outlet component and move that replaced content to a new component such as HomeComponent. Use the HomeComponent in your default route so it will load when you initially visit the site.
It's probably best if you check the documentation for Routing & Navigation since this is a pretty fundamental topic in Angular and there are a lot of details you should learn before you get too far.
App.component.html
<router-outlet></router-outlet>
home.component.html
<div>
<app-head></app-head>
<app-body></app-body>
</div>
app-routing.module.ts
const routes: Routes = [
{ path: '', component: HomeComponent }
{ path: 'newPage', component: NewComponent}
]
You will want to put a <router-outlet></router-outlet> in your app component and move what's in your current app component to a new component. Then update your routes to:
const routes: Routes = [
{ path: '', component: TheStuffYouMovedComponent },
{ path: 'newPage', component: NewComponent }
]

Angular router link to element with a specified id within the page

I'm using Angular Router and I'm trying to link to a sub-component in another route by id. Basically what would usually be done using the <a href="www.url.com/profile/#profile-header-id">.
I'm not sure if there's a built-in way for the Angular router to do this, but if not perhaps I can manually trigger the link at a later point when I know the element has been rendered.
The issue isn't linking to another route which of course is done with the Link from the Angular router. The issue is linking to an element which is found in the rendered HTML of the linked component.
Less Abstract Code Example:
So let's say my router in the app.module.ts file is
`const routes = [
{ path: '', component: HomeComponent},
{ path: '#section3', component: HomeSection3Component},
{ path: 'B', component: BComponent},
];`
Now in component OtherComponent, I want a Link that not only takes me to the home page route ' ', but also scrolls to the element of id #section3, thereby skipping all the irrelevant stuff.
My home component has nested components for each one of the sections of the page. Each section/component has an id.
home.component.html
`<main>
<app-section1></app-section1>
<app-section2></app-section2>
<app-section3></app-section3>
</main>`
However, all I can see is a blank page when clicking the button <button routerLink="#section3">Go to homepage section 3</button> on the B page.
The most elegant solution is just to add a fragment property to add the #section3 to the URL and then make it jump to this section with an anchor tag.
<div [routerLink]="['']" fragment="section3">
Jump to 'Section3' anchor
</div>
Use the routerLink directive combined with its fragment input property.
<a routerLink fragment="section3">Section 3</a>
With your routes, the rendered DOM is
Section 3
Make sure that you have imported RouterModule in the declaring module of the component in which you use the routerLink directive. Example:
import { CommonModule } from '#angular/common';
import { NgModule } from '#angular/core';
import { RouterModule } from '#angular/router';
#NgModule({
declarations: [
HomeComponent,
HomeSection1Component
HomeSection2Component,
HomeSection3Component,
],
imports: [
CommonModule,
RouterModule,
],
})
export class HomeModule {}

Why is my application reloading the full page instead of the component when having an external routing file in angular 4?

I just started migrating an app to Angular + Flex-Layout + Angular Material.
I decided to have my routing in an external file called "app-routing.module.ts". I export my module in in the app.module.ts within "imports". This is my routing file:
import { NgModule } from '#angular/core';
import { RouterModule, Routes } from '#angular/router';
import { HomeComponent } from './home/home.component'
import { CreateMatchComponent } from './match/create-match.component'
const routes: Routes = [
{ path: '', redirectTo: '/home', pathMatch: 'full' },
{ path: 'home', component: HomeComponent },
{ path: 'match/new', component: CreateMatchComponent}
];
#NgModule({
imports: [ RouterModule.forRoot(routes)],
exports: [ RouterModule ]
})
export class AppRoutingModule {}
And here is the HTML from the app.component that renders my router outlet.
<div class="containerX">
<div fxLayout="row wrap">
<mat-toolbar color="primary" class="mat-elevation-z4">
<span>Amazing Football Stats App</span>
<span class="example-spacer"></span>
<mat-icon class="example-icon">favorite</mat-icon>
<mat-icon class="example-icon">delete</mat-icon>
</mat-toolbar>
</div>
<div fxLayout="row wrap" style="padding-top: 8px">
<router-outlet></router-outlet>
</div>
</div>
As you can see, my App Component has a div with the navigation bar and then another div with my <router-outlet>.
If I go to localhost:4200 it loads <app-root> which contains the <nav-bar> and the <router-outlet> and since the "route" is empty it redirects me to "/home".
Now my problem is this: If I change the URL to: localhost:4200/match/new (In the browser, in the URL bar) hit enter, I would expect to leave the <nav-bar> and only update the <router-outlet> and the same goes backwards.
If I am on a different page and I change the URL to "/home" (or even leaving it empty) it should keep the nav bar and only update the router outlet.
Sorry if this is a stupid question I just started with angular routing. What am I doing wrong?
When you change the browser location, the browser is handling that change and will send a new HTTP request to your server. That's why it reloads the whole page.
In order to only change the component loaded in the <router-outlet>, you need Angular's router to handle the change, which is done by using the routerLink directive:
<a routerLink="match/new" routerLinkActive="active">Create Match</a>
or programmatically with a call to router.navigate:
constructor(private router: Router) {}
...
goToCreateMatch() {
this.router.navigate(['/match/new']);
}
Here's a link to angular's documentation, for more info:
https://angular.io/guide/router#router-links
https://angular.io/api/router/Router#navigate