import { Injectable } from '@angular/core';
import {
	HttpClient,
	HttpHeaders,
	HttpParams
} from '@angular/common/http';

@Injectable()
export class MyService {
	constructor(httpService: HttpService) {}

	mySuccessCallback(payload: any, responseData: any) {
		/* do something with success response */
	}

	myErrorCallback(payload: any, error: any) {
		/* do something with error response */
	}

	public methodThatMakesARequest(): void {
		// API route for your request
		let apiRoute = 'https://example.com/api/endpoint';

		// Payload to send with your request
		let myPayload = { /* payload */ };

		// Prepare request headers
		myRequestHeaders: Array<{name: string, value: string}> = [
			/* add request headers here, e.g.: */
			{name: 'SomeHeader', value: 'SomeValue'},
		];

		let headerArg = new HttpHeaders();

		headers.forEach((header) => {
			headerArg = headerArg.set(header.name,header.value);
		});

		// Include default 'content-type' header
		// (This is included by HttpService in the next example)
		if (! headerArg.has('Content-Type')) {
			headerArg = headerArg.set('Content-Type','application/json');
		}

		// Prepare request params
		myRequestParams: Array<{id: string, value: string}> = [
			/* add request params here, e.g.: */
			{id: 'SomeParam', value: 'SomeValue'},
		];

		let paramsArg = new HttpParams();

		params.forEach((header) => {
			paramsArg = 	paramsArg.set(params.id,params.value);
		});


		this.httpService.post(
			apiRoute,
			myPayload,
			{
				headers: headerArg,
				params: paramsArg,
			}
		).subscribe(
			data => {
				mySuccessCallback(myPayload,data);
			},
			error => {
				myErrorCallback(myPayload,error);
			}
		);
	}
}

import { Injectable } from '@angular/core';
import { HttpService } from 'ng-http-sugar';

@Injectable()
export class MyService {
	constructor(private _http: HttpService) {}

	mySuccessCallback(payload: any, responseData: any) {
		/* do something with success response */
	}

	myErrorCallback(payload: any, error: any) {
		/* do something with error response */
	}

	public methodThatMakesARequest(): void {
		// API route for your request
		let apiRoute = 'https://example.com/api/endpoint';

		// Payload to send with your request
		let myPayload = { /* payload */ };

		// Optional array of request header name/value objects
		myRequestHeaders: Array<{name: string, value: string}> = [
			/* add request headers here, e.g.: */
			{name: 'SomeHeader', value: 'SomeValue'},
		];

		// Optional array of request param id/value objects
		myRequestParams: Array<{id: string, value: string}> = [
			/* add request params here, e.g.: */
			{id: 'SomeParam', value: 'SomeValue'},
		];

		// This handles preparing HttpHeaders and HttpParams for you, as well
		// as subscribing to the response observable to fire callbacks needed.
		this._http.post(
			apiRoute,
			myPayload,
			myRequestHeaders, // optional
			myRequestParams, // optional
			this.mySuccessCallback, // optional
			this.myErrorCallback, // optional
		);
	}
}

import { HttpService } from 'ng-http-sugar';