Quick Answer: Why Do We Use @AuraEnabled Annotation?

Why do we use a enqueueAction action?

enqueueAction(action) sends the request the server.

More precisely, it adds the call to the queue of asynchronous server calls.

That queue is an optimization feature of Lightning..

What is $a in lightning?

What is ‘$A’ in Lightning Component Aura Framework? … The $A namespace is the entry point for using the framework in JavaScript code. It allows you to interact with the framework.

How do you call a LWC button?

The simplest approach is to implement your LWC so it visually shows a button of its own, have it set isExposed as true in its metadata with appropriate target config to let you add it to Lightning Record Pages of the required object type(s), then add the LWC as a component on the Lightning Record Page itself (using the …

How do you use wrapper class in LWC?

Let’s see an example of wrapper class in LWClightning component salesforce….Now we can add this lwc component on home page.Go to Home page.Click Setup (Gear Icon) and select Edit Page.Under Custom Components, find your wrapperClassExampleLWC component and drag it on right hand side top.Click Save and activate.

How do you use the map attribute in lightning component?

({ doInit: function(component, event, helper) {var action = component. get(‘c.getMyMap’); action. … var state = response. getState(); if (state === “SUCCESS”) {//set response value(map) in myMap attribute on component. component. set(‘v.myMap’,response. … }); $A. enqueueAction(action);

What is difference between VisualForce Components and lightning components?

A: Visualforce components are page-centric and most of the work is done on the server. Lightning is designed from the component up, rather than having the concept of a page as its fundamental unit. Lightning Components are client-side centric, which makes them more dynamic and mobile friendly.

What is @API in LWC?

Public properties define the API for a component. An owner component that uses the component in its markup can access the component’s public properties. Public properties are reactive. If the value of a reactive property changes, the component’s template rerenders any content that references the property. Thanks.

Salesforce Lightning Component to Display Contacts Related to particular Accountpublic with sharing class AjinkyaTestLightningAccController.{@AuraEnabled.public static list getRelatedList(Id recordId){List Conlist = [Select id, name,firstname,lastname from Contact where AccountId=: recordId ];More items…

How do you iterate map values in lightning component?

By using the aura:iteration tag….First we create our component controller class.In this apex class we have a @AuraEnabled getMyMap() method which return type is Map type.In this method first we created a new map called Mymap and put value on it . (‘key’ , ‘value’) and return the map.

Why AuraEnabled methods are static?

@AuraEnabled enables client- and server-side access to the controller method. Server-side controllers must be static and all instances of a given component share one static controller. … Setting the method to static resolved the issue.

How do I use the aura component map?

STEP 2) Create a lightning component (name=”mapIteration. cmp”).

How do I integrate Google Maps with lightning components?

To get Google Maps to work in lightning components we will need to implement maps in visualforce page and embed in lightning components as iFrame. One library that locker service team opened in locker service is window. postMessage. This allows lightning components to send/receive messages to/from visualforce pages.

Why do we use wrapper classes?

Wrapper classes are used to convert any data type into an object. The primitive data types are not objects; they do not belong to any class; they are defined in the language itself. Sometimes, it is required to convert data types into objects in Java language. For example, upto JDK1.

How do you use the wrapper in lightning component?

Using Wrapper Class In Lightning Component Example : Lightning Component Output: Apex class Controller [Include Wrapper/Inner class]. // create a wrapper class object and set the wrapper class @AuraEnabled properties and return it to the lightning component.

What is a enqueueAction action?

enqueueAction(action) adds the server-side controller action to the queue of actions to be executed. All actions that are enqueued will run at the end of the event loop.

What is AuraEnabled?

The AuraEnabled annotation enables Lightning components to access Apex methods and properties. The AuraEnabled annotation is overloaded, and is used for two separate and distinct purposes. Use @AuraEnabled on Apex class static methods to make them accessible as remote controller actions in your Lightning components.

How do you call Apex LWC?

Wire a property : There are two way to call apex method as wire property:Apex Wire Method to Property Syntax : import { LightningElement, wire } from ‘lwc’; … Apex Wire Method to Property with Parameters Syntax : import apexMethod from ‘@salesforce/apex/Namespace.Classname.apexMethod’;

What are wrapper classes in Salesforce?

Wrapper Class in Apex Salesforce: A wrapper or container class is a class, a data structure which contains different objects or collection of objects as its members. A wrapper class is a custom object defined by a programmer wherein he defines the wrapper class properties.

What is difference between SOQL and SOSL in Salesforce?

SOQL (Salesforce Object Query Language ) retrieves the records from the database by using “SELECT” keyword. SOSL(Salesforce Object Search Language) retrieves the records from the database by using the “FIND” keyword. By Using SOQL we can know in Which objects or fields the data resides. … We can query on multiple tables.

Why use triggers in Salesforce?

Typically, you use triggers to perform operations based on specific conditions, to modify related records or restrict certain operations from happening. You can use triggers to do anything you can do in Apex, including executing SOQL and DML or calling custom Apex methods.

What is @AuraEnabled in Salesforce?

The @AuraEnabled annotation enables client- and server-side access to an Apex controller method. Providing this annotation makes your methods available to your Lightning components (both Lightning web components and Aura components). Only methods with this annotation are exposed.

How do you iterate a map in LWC?

We have used wire method to call the apex method. For that first we import that method using standard import approach. In Lightning we use aura:iteration to iterate list while in LWC we use template for:each={mapData} for:item=”mapKey” to iterate the list.

How do you call Apex lightning?

In this post we will talk about how to call Apex class from Lightning Component. Step 1) Create on Apex Class with @AuraEnabled annotation and method must be static. Step 2) Create Lightning Component with controller. Step 4) As per best practice use Helper method for all logic.