Using blog data in an Angular template

• Injecting Scully's Route Service
• Adding metadata to ScullyRoutes

Injecting Scully's Route Service

Scully provides a service for accessing generated routes with ease. To use it, open the home.component.ts file we made earlier and add the following code:

import {ScullyRoutesService, ScullyRoute} from '@scullyio/ng-lib';
import {Observable} from 'rxjs';

@Component()
//...
export class HomeComponent implements OnInit {
  links$: Observable<ScullyRoute[]> = this.scully.available$;

  constructor(private scully: ScullyRoutesService) {}

  ngOnInit() {
    // debug current pages
    this.links$.subscribe(links => {
      console.log(links);
    });
  }
}

We can see ScullyRoutesService.available$ returns an Observable of an array of ScullyRoutes, the interface of which looks like this:

export interface ScullyRoute {
  route: string;
  title?: string;
  slugs?: string[];
  published?: boolean;
  slug?: string;
  sourceFile?: string;
  [prop: string]: any;
}

To extract data from the available links$ Scully has rendered, we can loop through them inside the template by opening the home.component.html file and adding the following code:

<p>home works!</p>

<ul>
  <li *ngFor="let page of links$ | async">{{ page.route }}</li>
</ul>

NOTE: If you don't add any route, Scully will pre-render 0 pages.

Adding metadata to ScullyRoutes

At the very top of each .md blog post file, between the opening and closing --- indicators, each line of text corresponds to a property we can pull out of ScullyRoutesService.available$.

For example, a .md file beginning with:

---
title: blog title
description: blog description
published: true
arbitraryValue: single value
arbitraryArray: [first item, second item]
---

... lets us use these values in our template like this:

<ul>
  <li *ngFor="let page of links$ | async">
    {{ page.route }}
    {{ page.arbitraryValue }}
    <span *ngFor="let arrayItem of page.arbitraryArray">
      {{ arrayItem }}
    </span>
  </li>
</ul>