Recordid Is Not Defined

Lightning Web Components: Accessing Record ID

Introduction

When working with Lightning Web Components (LWCs) targeted at `lightning_RecordAction`, you may encounter an issue where the `recordId` property is undefined. This issue arises because headless LWCs do not receive the `recordId` value automatically.

The Problem

In this specific scenario, the LWC's constructor and `connectedCallback` methods return `undefined` for the `recordId` property. However, when a button click event is triggered, the `handleClick` method is able to retrieve the correct `recordId`.

Understanding the Context

Headless LWCs are designed to operate without a visible UI. As a result, the `recordId` value is not passed to these components automatically, leading to the undefined value in the constructor and `connectedCallback`.

The Solution

To resolve this issue, we can utilize the `@api` decorator to expose the `recordId` property. This allows child components to access the parent component's `recordId` value. Here's an example code: ```html ``` ```javascript import { LightningElement, api } from 'lwc'; export default class RecordIdExposer extends LightningElement { @api recordId; handleClick() { console.log(this.recordId); } } ``` By using the `@api` decorator, the `recordId` property becomes accessible to child components, enabling them to retrieve the record ID. This approach ensures that the `recordId` value is available throughout the component hierarchy, resolving the undefined property issue.