What InMemoryDbService is for? angular 6 - angular6

Question

Im trying to get more than one object from In Memory Data service and i cant manage to do that, just wondering if it is even possible to get? or i just can have one testing data without possibility to extend it it looks like that:
import { InMemoryDbService } from 'angular-in-memory-web-api';
export class InMemoryDataService implements InMemoryDbService {
createDb() {
const groups = [
{id: 0, name: 'Mr. Nice'},
{id: 12, name: 'Narco'},
{id: 13, name: 'Bombasto'},
{id: 14, name: 'Celeritas'},
{id: 15, name: 'Magneta'},
{id: 16, name: 'RubberMan'},
{id: 17, name: 'Dynama'},
{id: 18, name: 'Dr IQ'},
{id: 19, name: 'Magma'},
{id: 20, name: 'Tornado'},
];
return {groups}
}
}

Answer 1

If you want to get the whole array from the InMemoryDbService you need to send a http get request to the address: 'api/groups'.
In case you want only a specific object returned from the list you need to send a http get request to the address: 'api/groups/id' where id is one of the numbers defined in your groups const.
In case you meant to add another collection to the InMemoryDbService, you can just define a new const array and then add it to the return part of the createDb method like this:
const itemList = [
{id: 1, name: "First item"},
{id: 2, name: "Second item"},
];
return {
groups: groups,
items: itemList
}
Note that the endpoints now are: 'api/groups', 'api/groups/id', 'api/items' and 'api/items/id' where id is one of the numbers defined in your const arrays.
You also need to register the InMemoryWebApiModule in the imports array of your app.module.ts:
imports: [
InMemoryWebApiModule.forRoot(InMemoryDbService)
],