Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
632 views
in Technique[技术] by (71.8m points)

templates - How to realize website with hundreds of pages in Angular2

I am preparing SPA website containing hundreds of article-like pages (apart from eCommerce, login etc.). Every article has its own URL. I want to realize it using Angular2. The only solution I found so far is:

1. to prepare hundreds of Agular2 components, one component for every article...

...with templateUrl pointing to article markup. So I will need hundreds of components similar to:

@core.Component({
  selector: 'article-1',
  templateUrl: 'article1.html'
})
export class Article1 {}

2. to display an article using AsyncRoute

see Lazy Loading of Route Components in Angular2

@core.Component({
  selector: 'article-wrapper',
  template: '<router-outlet></router-outlet>'
})
@router.RouteConfig([
  new router.AsyncRoute({
    path: '/article/:id',
    loader: () => {
      switch (id) {
        case 1: return Article1;
        case 2: return Article2;
          //... repeat it hundreds of times
      }
    },
    name: 'article'
  })
])
class ArticleWrapper { }

In Angular1 there was ngInclude directive, which is missing in Angular2 due to the security issues (see here).

[Edit 1] There is not only problem with the code itself. Problem is also with static nature of this solution. If I need website with sitemap and dynamic page structure - adding a single page needs recompilation of the whole ES6 JavaScript module.

[Edit 2] The concept "markup x html as data" (where markup is not only static HTML but also HTML with active components) is basic concept of whole web (every CMS has its markup data in database). If there does not exist Angular2 solution for it, it denies this basic concept. I believe that there must exist some trick.

Question&Answers:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

All following solutions are tricky. Official Angular team support issue is here.

Thanks to @EricMartinez for pointing me to @alexpods solution:

this.laoder.loadIntoLocation(
  toComponent(template, directives), 
  this.elementRef,
  'container'
);

function toComponent(template, directives = []) {
  @Component({ selector: 'fake-component' })
  @View({ template, directives })
  class FakeComponent {}

  return FakeComponent;
}

And another similar (from @jpleclerc):

@RouteConfig([
  new AsyncRoute({
    path: '/article/:id',
    component: ArticleComponent,
    name: 'article'
  })
])
...

@Component({ selector: 'base-article', template: '<div id="here"></div>', ... })
class ArticleComponent {
    public constructor(private params: RouteParams, private loader: DynamicComponentLoader, private injector: Injector){

    }

    ngOnInit() {
      var id = this.params.get('id');
      @Component({ selector: 'article-' + id, templateUrl: 'article-' + id + '.html' })
      class ArticleFakeComponent{}

      this.loader.loadAsRoot(
          ArticleFakeComponent, 
          '#here'
          injector
      );
    }
}

A bit different (from @peter-svintsitskyi):

// Faking class declaration by creating new instance each time I need.
        var component = new (<Type>Function)();
        var annotations = [
            new Component({
                selector: "foo"
            }),
            new View({
                template: text,
                directives: [WordDirective]
            })
        ];

        // I know this will not work everywhere
        Reflect.defineMetadata("annotations", annotations, component);

        // compile the component
        this.compiler.compileInHost(<Type>component).then((protoViewRef: ProtoViewRef) => {
            this.viewContainer.createHostView(protoViewRef);
        });

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...