角向组件附加DOM

Question

So in angularjs you had the possibility to define a directive and bind the html template to an already existing controller. In principal this meant you could reuse the controller for multiple directives, therefore for multiple templates.

angular
.module('App')
.component('Name', {
    templateUrl: 'some.html',
    controller: 'someController'
});

How can this be performed in Angular. As far as I understood it in Angular Components are directives and always directly bind the html. Basically I want to use another view which only changes the html but keeps the same functionality.

Edit:

Basically I want this:

@Component({
    selector: 'jhi-exercise-list',
    templateUrl: '(MULTIPLE HTML TEMPLATE PATHS HERE)',
    providers: [                      
                ]
})
    export class className{

    //USING THE SAME COMPONENT CODE FOR THE MULTIPLE TEMPLATES

    constructor(){}
}

The only option I found so far would be through extending but I think thats overkill.

Answer 1

Define templateUrl as a function

You can specify templateUrl as a string representing the URL or as a function which takes two arguments tElement and tAttrs .

The function takes the following arguments:

• tElement - template element - The element where the directive has been declared.

• tAttrs - template attributes - Normalized list of attributes declared on this element.

For more information, see AngularJS Comprehensive Directive API Reference - templateURL

Answer 2

After more research it still seems that the best solution I could come up with is using inheritance.

https://coryrylan.com/blog/angular-component-inheritance-and-template-swapping

He has a rather nice description of it

Thank you to all who helped me ;)

Answer 3

There must be some directive in angularjs as ng-if or something like that.

In Angular 4 you can do this as one of way as

<div *ngIf="x === 1"></div>
<div *ngIf="x === 2"></div>

And you can pass the value of x according to your need.

Added Solution

import { Component, Input } from '@angular/core';
import { Blogger } from '../models/blogger';
import { BloggerProfileService } from '../service/blogger-profile.service';
import { SharedService } from '../service/shared.service';
import { AuthService } from '../auth-service.service';
import { Router } from '@angular/router';

@Component({
  selector: 'article-author-panel',
  templateUrl: './article-author-panel.component.html',
  styleUrls: ['./article-author-panel.component.css']
})
export class ArticleAuthorPanelComponent {

  @Input('templateType') templateType;
  author;
  blogger : Blogger;
  articleDt;
  user;

  @Input()
    get articleDate(){
      return this.articleDt;
    }

    set articleDate(date){
      this.articleDt = this.sharedService.getUTCDate(new Date(date));
    }
  @Input()

  set articleAuthor(author) {
    this.author = author;
    this.bloggerProfileService.getBlogger(author)
    .take(1)
    .subscribe((blogger) => {
      this.blogger = blogger;
    })
  }

  get articleAuthor() {
    return this.author;
  }

  constructor(
    private bloggerProfileService: BloggerProfileService,
    private sharedService: SharedService,
    private router : Router,
    private authService: AuthService
  ) {
    authService.user$
    .take(1)
    .subscribe((user) => {
      if(user) this.user = user;
    });
  }

  clickFollow(){
    if(this.user === null || this.user === undefined){
      this.router.navigate(['/']);
    }
  }

}

Template

<ng-container *ngIf="templateType === 1">
    <div class="row no-gutters" style="border-top: 1px solid #a0a0a0; padding-top:5px;">
        <div class="col-2">
            <img src="http://www.publicdomainpictures.net/pictures/170000/velka/spinach-leaves-1461774375kTU.jpg" alt="Person" class="aap-image">
        </div>
        <div class="col-10">
            <div class="row">
                <div class="col-9">
                    <div class="aap-b-detail" *ngIf="blogger">
                        <span class="aap-b-name">{{ blogger.name }}</span>
                        <br />
                        <span class="aap-b-summary">{{ blogger.summary }}</span>
                    </div>
                </div>
                <div class="col-3">
                    <button class="aap-follow" (click)="clickFollow()">Follow</button>
                </div>
            </div>
        </div>
    </div>
</ng-container>
<ng-container *ngIf="templateType === 2">
    <div class="row no-gutters">
        <div class="col-2">
            <img src="http://www.publicdomainpictures.net/pictures/170000/velka/spinach-leaves-1461774375kTU.jpg" alt="Person" class="aap-image">
        </div>
        <div class="col-10">
            <div class="row">
                <div class="col-9">
                    <div class="aap-b-detail aap-b-detail-lh" *ngIf="blogger">
                        <span class="aap-b-name">{{ blogger.name }}</span>
                        <br />
                        <span class="aap-b-summary">{{ blogger.summary }}</span>
                        <br />
                        <span class="aap-b-date">{{ articleDate }}</span>
                    </div>
                </div>
                <div class="col-3">
                    <button class="aap-follow" (click)="clickFollow()">Follow</button>
                </div>
            </div>
        </div>
    </div>
</ng-container>

This is my component which I have created where according to the position I placed the component the layout changes. You can consider it as two different htmls connected together as normal if else keeping the behind code same. According to my demand I did not use each variable. Hope this helps.

Answer 4

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';

import { LoadingComponent } from './loading.component'

@NgModule({
imports: [
CommonModule
],
declarations: [LoadingComponent],
exports: [LoadingComponent]
})
export class LoadingModule { }

IN this case am planning to reuse the loading component in multiple places. I will be injecting this module on specif area am intending to use loading component