25. Firebase

• Fast, scalable, real-time database in the Cloud
• Authentication
• Cloud Functions, Cloud Messaging, Cloud Firestore
• Hosting
• Cloud Storage
• Analytics
• Performance Monitoring
• Notifications, TestLab, Crash Reporting

https://firebase.google.com/

Our Firebase Realtime No SQL Database:

package.json:

{
  "name": "ng5-firebase",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^5.0.0",
    "@angular/common": "^5.0.0",
    "@angular/compiler": "^5.0.0",
    "@angular/core": "^5.0.0",
    "@angular/forms": "^5.0.0",
    "@angular/http": "^5.0.0",
    "@angular/platform-browser": "^5.0.0",
    "@angular/platform-browser-dynamic": "^5.0.0",
    "@angular/platform-server": "^5.0.0",
    "@angular/router": "^5.0.0",
    "angularfire2": "^5.0.0-rc.3",
    "bootstrap": "^4.0.0-alpha.6",
    "core-js": "^2.4.1",
    "firebase": "^4.6.1",
    "rxjs": "^5.5.2",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular/cli": "^1.5.0",
    "@angular/compiler-cli": "^5.0.0",
    "@angular/language-service": "^4.2.4",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "~3.1.1",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~3.2.0",
    "tslint": "~5.3.2",
    "typescript": "2.4.2"
  }
}

Environment:

export const environment = {
  production: false,
  firebase: {
  apiKey: 'AIzaSyDeeZmU6Qkd130VJ7RnFd3wLsSkXbFYDos',
  authDomain: 'ng5-firebase.firebaseapp.com',
  databaseURL: 'https://ng5-firebase.firebaseio.com',
  projectId: 'ng5-firebase',
  storageBucket: 'ng5-firebase.appspot.com',
  messagingSenderId: '242211192873'
  }
};

AppModule:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';
import { AngularFireModule } from 'angularfire2';
import { AngularFireDatabaseModule } from 'angularfire2/database';

import { environment } from '../environments/environment';

import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpClientModule,
    AngularFireModule.initializeApp(environment.firebase),
    AngularFireDatabaseModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

AppComponent:

import { Component } from '@angular/core';
import { AngularFireDatabase, AngularFireList } from 'angularfire2/database';

import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';

@Component({
  selector: 'app-root',
  template: `
          <h1 class="text-center text-primary">{{ title }}</h1>
          <hr>
        <div class="row">
          <div class="col-3">
          <button type="button" (click)="deleteAll()" class="btn btn-info">Remove All</button>
          </div>
          <div class="col-6 offset-3">
            <div class="input-group">
              <span class="input-group-btn">
                <button (click)="add(newTechnology.value); newTechnology.value = '';"
                class="btn btn-primary" type="button">Add</button>
              </span>
              <input #newTechnology type="text" class="form-control" placeholder="New Technology ...">
              </div>
          </div>
            <div *ngFor="let technology of technologies | async" class=col-3>
              <div class="card card-inverse card-danger text-center" style="width: 15rem;">
                <div class="card-block">
                  <h4 class="card-title"><input type="text" class="form-control"
                  [(ngModel)]="technology.value"></h4>
                    <p class="card-text"></p>
                    <button type="button" (click)="update(technology.key, technology.value)"
                     class="btn btn-default">Update</button>
                     <button type="button" (click)="delete(technology.key)"
                     class="btn btn-default">Delete</button>
                </div>
              </div>
          </div>

        </div>
  `
})
export class AppComponent {
  title = 'Welcome to my Angular 5 Firebase App';
  technologiesRef: AngularFireList<any>;
  technologies: Observable<any[]>;

  constructor(db: AngularFireDatabase) {
        this.technologiesRef = db.list('/technologies');
        this.technologies = this.technologiesRef.snapshotChanges().map(changes => {
          return changes.map(change => ({ key: change.payload.key, ...change.payload.val() }));
        });
  }

  add(newTechnology: string): void {
    newTechnology = newTechnology.trim();
    if (!newTechnology) { return; }
    this.technologiesRef.push({value: newTechnology});
  }

  update(key: string, newValue: string) {
    console.log(key, newValue);
    this.technologiesRef.update(key, {value: newValue});
  }

  delete(key: string) {
    this.technologiesRef.remove(key);
  }

  deleteAll() {
    this.technologiesRef.remove();
  }

}

Let's have a look at the application in our Chromium Browser:

software is like sex. it's better when it's free. https://ng5-firebase.firebaseapp.com/

https://github.com/angular/angularfire2