Introduction

The main concept included in this recipe are:

• Retrieving the information for a Contactrecord and then access the fields in an explicit manner.
  • Explicit means that the Salesforce schema for the object is known and used.
• Importing object fields explicitly in a static way.
  • These static imports provide some benefits that are valuable on some situations.
• Providing getter functions to retrieve the values.

<aside> 📂 Find this LWC in this folder: force-app\\main\\default\\lwc\\apexStaticSchema

</aside>

Apex method

Inside the ContactControllerclass, the method getSingleContactis exposed using the @AuraEnabled(cacheable=true)decorator, this is required to be able to call this method from LWC.

This method returns 1 Contact record:

@AuraEnabled(cacheable=true)
    public static Contact getSingleContact() {
        return [
            SELECT Id, Name, Title, Phone, Email, Picture__c
            FROM Contact
            WITH SECURITY_ENFORCED
            LIMIT 1
        ];
    }

Javascript file

In order to use this method in the LWC, an importis required.

Also, for every field to be used, there is an statically import like import NAME_FIELD from '@salesforce/schema/Contact.Name';.

<aside> 💡 Doing so, Salesforce verifies that the objects and fields exist and prevents objects and fields from being deleted and cascades any renamed objects and fields into your component's source code. It also ensures that dependent objects and fields are included in change sets and packages. Importing references to objects and fields ensures that your code works, even when object and field names change.

</aside>

Following, the imported method is wired to the contact property.

Template file

In the template, the name, title, and email properties have getters that make usage of the getSObjectValue() function to extract the value from the specified field. The getSObjectValue() function has this signature: getSObjectValue(sobject, fieldApiName);.

import { LightningElement, wire } from 'lwc';
import { getSObjectValue } from '@salesforce/apex';
**import getSingleContact from '@salesforce/apex/ContactController.getSingleContact';**

**import NAME_FIELD from '@salesforce/schema/Contact.Name';
import TITLE_FIELD from '@salesforce/schema/Contact.Title';
import EMAIL_FIELD from '@salesforce/schema/Contact.Email';**

export default class ApexStaticSchema extends LightningElement {
    @wire(getSingleContact) contact;

    get name() {
        return this.contact.data
            ? getSObjectValue(this.contact.data, NAME_FIELD)
            : '';
    }

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