angular-fire-firebase-sdk.ts

import {FirebaseApp} from "angularfire2";

@Injectable()
export class LessonsService {

    constructor( @Inject(FirebaseApp) fb) {

        const rootDbRef = fb.database().ref();
        
        rootDebRef.on('value', snapshot => console.log(snapshot.val()));
        
        ...
    }
    
}

angular-fire-install.ts

@NgModule({
  declarations: [
    AppComponent,
    ...
  ],
  imports: [
      BrowserModule,
      AngularFireModule.initializeApp(firebaseConfig),
      AngularFireDatabaseModule,
      AngularFireAuthModule,
      RouterModule.forRoot(routerConfig)  
],
  providers: [...],
  bootstrap: [AppComponent]
})
export class AppModule { }

angular-fire-list.ts

import {Injectable} from '@angular/core';
import {Observable, Subject} from "rxjs/Rx";
import {Lesson} from "./lesson";
import {AngularFireDatabase} from "angularfire2";


@Injectable()
export class LessonsService {

    constructor(private db:AngularFireDatabase) {
    }

    findAllLessons():Observable<Lesson[]> {
        return this.db.list('lessons')
            .do(console.log)
            .map(Lesson.fromJsonList);
    }
      
}
      
 

auth.ts

import {firebaseConfig} from "./src/environments/firebase.config";
import {initializeApp, auth,database} from 'firebase';

initializeApp(firebaseConfig);

auth()
    .signInWithEmailAndPassword('admin@angular-university.io', 'test123')
    .then(onLoginSuccess)
    .catch(onLoginError);

function onLoginSuccess() {
    ...
}

function onLoginError() {
    ...
}

courses-json.ts

{
  "-KT_udWMM0vKlnp-naE3": {
    "courseListIcon": "https://angular-academy.s3.amazonaws.com/main-logo/main-page-logo-small-hat.png",
    "description": "Angular 2 Tutorial For Beginners",
    "iconUrl": "https://angular-academy.s3.amazonaws.com/thumbnails/angular2-for-beginners.jpg",
    "longDescription": "Establish a solid layer of fundamentals, learn what's under the hood of Angular 2",
    "url": "getting-started-with-angular2"
  },
  "-KT_udWj0knDpxHaxcKv": {
    "courseListIcon": "https://angular-academy.s3.amazonaws.com/course-logos/observables_rxjs.png",
    "description": "Angular 2 HTTP and Services",
    "iconUrl": "https://angular-academy.s3.amazonaws.com/thumbnails/services-and-http.jpg",
    "longDescription": "<p class='course-description'>Build Services using Observables, learn to use the HTTP module effectively.",
    "url": "angular2-http"
  }
}

delete-request.ts

requestLessonDeletion(lessonId:string, courseId:string) {
    this.db.child('queue/tasks').push({lessonId,courseId})
        .then(
            () => alert('lesson deletion requested !')
        );
}

firebase-queue-consumer.ts

console.log("Running consumer ...");

const lessonsRef = database().ref("lessons");
const lessonsPerCourseRef = database().ref("lessonsPerCourse");

const queueRef = database().ref('queue');

const queue = new Queue(queueRef, function(data, progress, resolve, reject) {

    console.log('received delete request ...',data);

    ... complex business logic goes here ...

});

lesson.json

{
  "url": "angular2-hello-world-write-first-application",
  "description": "Angular 2 Tutorial For Beginners - Build Your First App - Hello World Step By Step",
  "duration": "2:49",
  "tags": "BEGINNER",
  videoUrl: "https://www.youtube.com/embed/du6sKwEFrhQ",
  "longDescription": "This is step by step guide to create your first Angular 2 application. Its aimed at beginners just starting out with the framework.This lesson will show how to create a component, and how to link the component to a given custom HTML tag. It will show how to give the component a given template."
}

one-to-many-wrong.json

{
  "url": "angular2-hello-world-write-first-application",
  "description": "Angular 2 Tutorial For Beginners - Build Your First App - Hello World Step By Step",
  "duration": "2:49",
  "tags": "BEGINNER",
  videoUrl: "https://www.youtube.com/embed/du6sKwEFrhQ",
  "longDescription": "This is step by step guide to create your first Angular 2 application. Its aimed at beginners just starting out with the framework.This lesson will show how to create a component, and how to link the component to a given custom HTML tag. It will show how to give the component a given template."
  lessons: [
          {
          "url": "angular2-hello-world-write-first-application",
          "description": "Angular 2 Tutorial For Beginners - Build Your First App - Hello World Step By Step",
          "duration": "2:49",
          "tags": "BEGINNER",
          videoUrl: "https://www.youtube.com/embed/du6sKwEFrhQ",
          "longDescription": "This is step by step guide to create your first Angular 2 application. Its aimed at beginners just starting out with the framework.This lesson will show how to create a component, and how to link the component to a given custom HTML tag. It will show how to give the component a given template."
        },
        {
          "url": "angular2-build-your-first-component",
          "description": "Building Your First Angular 2 Component - Component Composition",
          "duration": "2:07",
          "tags": "BEGINNER",
          videoUrl: "https://www.youtube.com/embed/VES1eTNxi1s",
          "longDescription": "In this lesson we are going to see how to include a component inside another component. We are going to create a simple search box component and include it in our main application."
        },
        ...
  ]
}

read-nodes-example.ts

constructor( @Inject(FirebaseApp) fb) {

      const rootDbRef = fb.database().ref();

      rootDebRef.child('courses').on('value', 
          snap => console.log('Received the whole courses node',snap.val()) );
      
      rootDebRef.child('lessons/-KT_udWS6pEmpLVrxlVw:').on('value', 
          snap => console.log('Received lesson with a given Id',snap.val()) );

}

read-object.ts

findLessonById(lessonId:string):Observable<Lesson> {
    return this.db.object(`lessons/${lessonId}`)
    .map(Lesson.fromJson);
}

read-whole-db.ts

import {initializeApp,database} from 'firebase';

export const firebaseConfig = {
    apiKey: "AIzaSyA0BcUcu4V8aHT_gM-32BhRcmqji4z-xts",
    authDomain: "some-app.firebaseapp.com",
    databaseURL: "https://some-app.firebaseio.com",
    storageBucket: "some-app.appspot.com",
    messagingSenderId: "290354329699"
};

initializeApp(firebaseConfig);

database().ref().on('value', snapshot => console.log(snapshot.val()));

save-data-angular-fire.ts

courses$.push({description: 'New Course'})
  .then(
       () => console.log('item added'),
       console.error
   );