integration of Simple GraphQL service with Angular 6 code

Author: arunprabug

package-lock.json

@@ -20,7 +20,13 @@
     "@angular/platform-browser": "^6.0.3",
     "@angular/platform-browser-dynamic": "^6.0.3",
     "@angular/router": "^6.0.3",
+    "apollo-angular": "^1.1.2",
+    "apollo-angular-link-http": "^1.1.1",
+    "apollo-cache-inmemory": "^1.3.0-beta.6",
+    "apollo-client": "^2.3.7",
     "core-js": "^2.5.4",
+    "graphql": "^0.13.2",
+    "graphql-tag": "^2.9.2",
     "rxjs": "^6.0.0",
     "zone.js": "^0.8.26"
   },

package.json

@@ -3,18 +3,8 @@
   <h1>
     Welcome to {{ title }}!
   </h1>
-  <img width="300" alt="Angular Logo" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNTAgMjUwIj4KICAgIDxwYXRoIGZpbGw9IiNERDAwMzEiIGQ9Ik0xMjUgMzBMMzEuOSA2My4ybDE0LjIgMTIzLjFMMTI1IDIzMGw3OC45LTQzLjcgMTQuMi0xMjMuMXoiIC8+CiAgICA8cGF0aCBmaWxsPSIjQzMwMDJGIiBkPSJNMTI1IDMwdjIyLjItLjFWMjMwbDc4LjktNDMuNyAxNC4yLTEyMy4xTDEyNSAzMHoiIC8+CiAgICA8cGF0aCAgZmlsbD0iI0ZGRkZGRiIgZD0iTTEyNSA1Mi4xTDY2LjggMTgyLjZoMjEuN2wxMS43LTI5LjJoNDkuNGwxMS43IDI5LjJIMTgzTDEyNSA1Mi4xem0xNyA4My4zaC0zNGwxNy00MC45IDE3IDQwLjl6IiAvPgogIDwvc3ZnPg==">
+  <app-friend-list></app-friend-list>
 </div>
-<h2>Here are some links to help you start: </h2>
-<ul>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://angular.io/tutorial">Tour of Heroes</a></h2>
-  </li>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://github.com/angular/angular-cli/wiki">CLI Documentation</a></h2>
-  </li>
-  <li>
-    <h2><a target="_blank" rel="noopener" href="https://blog.angular.io/">Angular blog</a></h2>
-  </li>
-</ul>
+
+
 

src/app/app.component.html

@@ -2,13 +2,17 @@ import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
 
 import { AppComponent } from './app.component';
+import { FriendListComponent } from './friend-list/friend-list.component';
+import { GraphQLModule } from './graphql.module';
 
 @NgModule({
   declarations: [
-    AppComponent
+    AppComponent,
+    FriendListComponent
   ],
   imports: [
-    BrowserModule
+    BrowserModule,
+    GraphQLModule
   ],
   providers: [],
   bootstrap: [AppComponent]

src/app/app.module.ts

@@ -0,0 +1,10 @@
+<div>
+  <div *ngIf="user">
+    User JSON : {{user}}
+  </div>
+  <div *ngIf="company">
+    Company JSON : {{company}}
+  </div>
+</div>
+<div>
+</div>

src/app/friend-list/friend-list.component.css

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { FriendListComponent } from './friend-list.component';
+
+describe('FriendListComponent', () => {
+  let component: FriendListComponent;
+  let fixture: ComponentFixture<FriendListComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ FriendListComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(FriendListComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/friend-list/friend-list.component.html

@@ -0,0 +1,35 @@
+import { Component, OnInit } from '@angular/core';
+import { Apollo } from 'apollo-angular';
+
+import { GET_FRIENDS } from './../graphql';
+
+@Component({
+  selector: 'app-friend-list',
+  templateUrl: './friend-list.component.html',
+  styleUrls: ['./friend-list.component.css']
+})
+export class FriendListComponent implements OnInit {
+
+  user: any;
+  company: any;
+  apollo: Apollo;
+  constructor(apollo: Apollo) {
+    this.apollo = apollo;
+  }
+
+  ngOnInit() {
+    this.friendsList = [];
+    this.apollo.watchQuery({
+      query: GET_FRIENDS
+    }).valueChanges.subscribe((response) => {
+      // 5
+      if (response.data.user) {
+        this.user = JSON.stringify(response.data.user);
+      }
+      if (response.data.company) {
+        this.company = JSON.stringify(response.data.company);
+      }
+    });
+  }
+
+}

src/app/friend-list/friend-list.component.spec.ts

@@ -0,0 +1,29 @@
+import { NgModule } from '@angular/core';
+import { HttpClientModule } from '@angular/common/http';
+
+import { Apollo, ApolloModule } from 'apollo-angular';
+import { HttpLink, HttpLinkModule } from 'apollo-angular-link-http';
+import { InMemoryCache } from 'apollo-cache-inmemory';
+
+import { ENDPOINT } from './graphql';
+
+
+
+@NgModule({
+  exports: [
+    HttpClientModule,
+    ApolloModule,
+    HttpLinkModule
+  ]
+})
+export class GraphQLModule {
+  constructor(apollo: Apollo, httpLink: HttpLink) {
+    const uri = ENDPOINT;
+    const http = httpLink.create({ uri });
+
+    apollo.create({
+      link: http,
+      cache: new InMemoryCache()
+    });
+  }
+}

src/app/friend-list/friend-list.component.ts

@@ -0,0 +1,14 @@
+import gql from 'graphql-tag';
+
+export const GET_FRIENDS = gql`
+{
+  user(id: "1") {
+    firstName
+    age
+    id
+  }
+}
+`;
+
+
+export const ENDPOINT = 'http://localhost:4000/graphql';

src/app/graphql.module.ts

@@ -15,6 +15,7 @@
     "lib": [
       "es2017",
       "dom"
-    ]
+    ],
+    "skipLibCheck": true
   }
 }