OutSystems Integration Guide

In collaboration with Stefan Nikolic, Senior Developer at Abeltech.eu.

Forge Component

The preferred way to integrate STRICH into OutSystems apps is by using our Forge Component.

Custom Integration

If you are for some reason unable to use the Forge component, The rest of this guide focuses on custom JavaScript integrations.

Adding STRICH SDK as a Script

Add the file strich-noesm.js from the NPM distribution or from a CDN to the module's scripts as described in Use JavaScript Code from an External Library. Note that OutSystems does not seem to support loading ES6 modules, so it is important to use the non-modular build instead of the regular strich.js distribution.

Non-modular STRICH build added as a script in OutSystems

Adding a BarcodeReader to a Screen

Adding a Container host element

The BarcodeReader instance needs a widget in which it will live. Add a Container element and give it a name, here we used hostElem. Add the position-relative style class to the widget, so it will have relative CSS positioning, which is required for BarcodeReader.

Initializing SDK and BarcodeReader in onReady

The onReady client action can be used to initialize the SDK and the BarcodeReader.

onReady client action calls JavaScript block

In the client action, we call a custom JavaScript block that receives the ID of the host widget as an input parameter. The ID is used to look up the DOM element, which is used to initialize the BarcodeReader. The script returns the initialization Promise as an output parameter, which is stored in a local variable by the client action. When a barcode is read, a client action is executed and passed the barcode data.

const hostElem = document.getElementById($parameters.hostElementId);
const licenseKey = '<your license key>';
$parameters.barcodeReader = strich.StrichSDK.initialize(licenseKey)
    .then(() => {
        const cfg = {
            selector: hostElem,
            engine: {
                symbologies: ['code128', 'qr']
            }
        };
        const barcodeReader = new strich.BarcodeReader(cfg);
        return barcodeReader.initialize();
    })
    .then((barcodeReader) => {
        barcodeReader.detected = (detections) => {
            $actions.onBarcodeDetected(detections[0].data);
        };
        return barcodeReader.start().then(() => {
            return barcodeReader;
        });
    });

Tearing down BarcodeReader in onDestroy

The onDestroy client action can be used to destroy the BarcodeReader, causing the camera to be released for subsequent use.

The onDestroy client action receives the local variable containing the BarcodeReader Promise as an input parameter, and uses it to destroy the BarcodeReader when the screen is exited.

const barcodeReaderPromise = $parameters.barcodeReader;
barcodeReaderPromise
    .then((barcodeReader) => {  
        return barcodeReader.destroy()
    });

Last modified: 27 August 2024