Imperative Apex While Offline

Imperative Apex calls always fail when the client device is offline. When using imperative Apex in an offline-enabled mobile app, it’s essential to handle the possibility of a network failure error.

Treat errors as a normal, expected outcome, rather than a failure condition. Provide appropriate feedback to the user, and suggest alternative behavior, rather than treating the situation as unexpected.

1// apexImperativeMethod.js
2import { LightningElement, track } from "lwc";
3import getContactList from "@salesforce/apex/ContactController.getContactList";
4
5export default class ApexImperativeMethod extends LightningElement {
6  @track contacts;
7  @track error;
8
9  handleLoad() {
10    getContactList()
11      .then((result) => {
12        this.contacts = result;
13      })
14      .catch((error) => {
15        this.error = error;
16      });
17  }
18}

Offline-savvy components expect to be offline at times, and know what to do when that happens.