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Monday, February 13, 2017

Aurelia - HTTP

In this chapter we will show you how to work with HTTP requests in Aurelia framework.

Step 1 - Create View

Let's create four buttons that will be used for sending requests to our API.

app.html

<template>
   <button click.delegate = "getData()">GET</button>
   <button click.delegate = "postData()">POST</button>
   <button click.delegate = "updateData()">PUT</button>
   <button click.delegate = "deleteData()">DEL</button>
</template>

Step 2 - Create View-model

For sending requests to server Aurelia recommends fetch client. We are creating functions for every requests we need (GET, POST, PUT and DELETE).
import 'fetch';
import {HttpClient, json} from 'aurelia-fetch-client';

let httpClient = new HttpClient();

export class App {

   getData() {
      httpClient.fetch('http://jsonplaceholder.typicode.com/posts/1')
      .then(response => response.json())
      .then(data => {
         console.log(data);
      });
   }

   myPostData = { 
      id: 101
   }
 
   postData(myPostData) {
      httpClient.fetch('http://jsonplaceholder.typicode.com/posts', {
         method: "POST",
         body: JSON.stringify(myPostData)
      })
  
      .then(response => response.json())
      .then(data => {
         console.log(data);
      });
   }

   myUpdateData = {
      id: 1
   }
 
   updateData(myUpdateData) {
      httpClient.fetch('http://jsonplaceholder.typicode.com/posts/1', {
         method: "PUT",
         body: JSON.stringify(myUpdateData)
      })
  
      .then(response => response.json())
      .then(data => {
         console.log(data);
      });
   }

   deleteData() {
      httpClient.fetch('http://jsonplaceholder.typicode.com/posts/1', {
         method: "DELETE"
      })
      .then(response => response.json())
      .then(data => {
         console.log(data);
      });
   }
  
}
We can run the app and click GET, POST, PUT and DEL buttons respectively. You can see in console that every request is succesfull, and the result is logged.
Aurelia HTTP Example

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