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angular-rest-client

v2.0.0

Published

Angular 5 HTTP client with Typescript Declarative Annotations, Observables, Interceptors and Timeouts.

Downloads

752

Readme

Build Status codecov

angular-rest-client

Angular 5 HTTP client with Typescript Declarative Annotations, Observables, Interceptors and Timeouts. This package is production ready.

Installation

yarn add angular-rest-client

or

npm install angular-rest-client --save

Example


import { Http, Request, Response } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import {
  HttpClient, RestClient, Client, GET, PUT, POST, DELETE, Headers, Path, Body, Query, Produces, MediaType
} from 'angular-rest-client';

import { Todo } from './models/Todo';
import { SessionFactory } from './sessionFactory';

@Injectable()
@Client({
    serviceId: 'todo-service',
    baseUrl: 'http://localhost:3000/api/',
    headers: {
        'content-type': 'application/json'
    }
})
export class TodoClient extends RestClient {

    constructor(http:Http){
        super(<HttpClient>http);
    }

    protected requestInterceptor(req: Request):void {
        if (SessionFactory.getInstance().isAuthenticated) {
            req.headers.append('jwt', SessionFactory.getInstance().credentials.jwt);
        }
    }

    protected responseInterceptor(res: Observable<Response>): Observable<any> {
        // do anything with responses
        return res;
    }

    @Get("todo/")
    @Timeout(2000) //In milliseconds
    @Produces(MediaType.JSON)
    public getTodos( @Query("page") page:number, @Query("size", {default: 20}) size?:number, @Query("sort") sort?: string): Observable<Todo[]> { return null; };

    @Get("todo/{id}")
    @Timeout(2000) //In milliseconds
    @Map(resp => new Todo(resp.json()))
    public getTodoById( @Path("id") id: number): Observable<Todo>{ return null; };

    @Post("todo")
    @Timeout(2000) //In milliseconds
    @Headers({
        'content-type': 'application/json'
    })
    public postTodo( @Body todo: Todo): Observable<Response> { return null; };

    @Put("todo/{id}")
    @Timeout(2000) //In milliseconds
    public putTodoById( @Path("id") id: string, @Body todo: Todo): Observable<Response> { return null; };

    @Delete("todo/{id}")
    @Timeout(2000) //In milliseconds
    public deleteTodoById( @Path("id") id: string): Observable<Response> { return null; };
}

Using it in your component

app.module.ts

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    HttpModule
  ],
  providers: [
    TodoClient
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

todo.component.ts

// You need some or all of the following rxjs imports for Promise and Observable.
import 'rxjs/add/observable/defer';
import 'rxjs/add/observable/throw';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/timeout';
import 'rxjs/add/operator/toPromise';
import { Observable } from 'rxjs/Observable';

@Component({
  selector: 'to-do',
})
export class ToDoCmp {

  constructor(private todoClient: TodoClient) {
  }

  // Use todoClient.
  sampleUsage() {
    this.todoClient.getTodos( /* page */ 1).subscribe(data=>{
      console.log(data)
    })
  }

  // Another example, using Promises.
  sampleUsage2() {
    this.todoClient.getTodos( /* page */ 1).toPromise()
      .then((response: Response) => console.log(response.json()))
      .catch(this.handleError);
    })
  }

  private handleError(error: any): Promise<any> {
    console.error('An error occurred', error);
    console.log('ERROR');
    return Promise.reject(error.message || error);
  }
}

API Docs

RestClient

Methods:

  • getServiceId(): string: returns the serviceId of the RestClient
  • getBaseUrl(): string: returns the base url of RestClient
  • getDefaultHeaders(): Object: returns the default headers of RestClient in a key-value pair

Class decorators:

  • @Client(args:{serviceId?: string, baseUrl?: string, headers?: any})

Method decorators:

  • @Get(url: String)
  • @Post(url: String)
  • @Put(url: String)
  • @Patch(url: String)
  • @Delete(url: String)
  • @Head(url: String)
  • @Headers(headers: Object)
  • @Map(mapper:(resp : any)=>any)
  • @OnEmit(emitter:(resp : Observable<any>)=>Observable<any>)
  • @Timeout(timeout: number)

Parameter decorators:

  • @Path(name: string, value?:any|{value?:any})
  • @Query(name: string, value?:any|{value?:any,format?:string})
  • @Header(name: string, value?:any|{value?:any,format?:string})
  • @Body

Collection Format

Determines the format of the array if type array is used. (used for @Query and @Header) Possible values are:

  • Format.CSV - comma separated values foo,bar.
  • Format.SSV - space separated values foo bar.
  • Format.TSV - tab separated values foo\tbar.
  • Format.PIPES - pipe separated values foo|bar.
  • Format.MULTI - corresponds to multiple parameter instances instead of multiple values for a single instance foo=bar&foo=baz. This is valid only for parameters in "query" or "formData".

Default value is Format.CSV.

Contributors

Brought to you by many contributors, including:

TrustPortal Solutions Ltd http://trustportal.org
Yavin Five
deblockt
Dmitry-Gorbenko
Maxxton Group http://www.maxxton.com
Domonkos Pal : Paldom
Discountrobot
TN-Kirontech
LeFinc
mmrath http://www.mmrath.com
steven166
Mayur Patel : mayur-novus

License

MIT