Calling an apex method imperatively and fetching contact record from database without @wire through lightning data-table in LWC | how to call an apex method imperatively in lwc

Hey guys, today in this post we are going to learn about How to Call an apex method imperatively and fetching contact record from database without @wire through lightning data-table in LWC.

Files we used in this post example:-

lwcFetchContactRecord.html	Lightning Web Component HTML	Template HTML file for used to write HTML element for user interface.
lwcFetchContactRecord.js	Lightning Web Component JavaScript	It is importing Apex Class, Apex method, Object and fields from "@salesforce/apex/"
lwcFetchContactRecord.js-meta.xml	XML Meta File	It is used for where this lightning web component should be exposed.
lwcAppExampleApex.cls	Apex Controller	It is used for call apex method imperatively in LWC Javascript file.

Don’t forget to check out:- Retrieving data from Account using @wire Decorators in Lightning web Components with apex method and lightning datatable — LWC Click Here For More Information

Live Demo

You can download file directly from github by Click Here.

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Step 1:- Create Lightning Web Component : lwcFetchContactRecord

SFDX:Lightning Web Component >> New >> lwcFetchContactRecord

lwcFetchContactRecord [Lightning Web Component HTML]

```
   <template>
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```
    <lightning-card>
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```
        <h3 slot="title">
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            <lightning-icon icon-name="standard:contact" size="small"></lightning-icon> Fetching contact record from apex method without @wire

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        </h3> 
```
```
 
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        <lightning-datatable data={contactData} columns={contactTable} key-field="Id"></lightning-datatable>

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```
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<br/><br/>
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<div style="border:1px #ddd solid; padding:10px; background:#eee; margin:40px 0;">

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```

            <p data-aura-rendered-by="435:0"><img src="https://www.w3web.net/wp-content/uploads/2021/05/thumbsUpLike.png" width="25" height="25" style="vertical-align:top; margin-right:10px;" data-aura-rendered-by="436:0"><strong data-aura-rendered-by="437:0"><span style="font-size:16px; font-style:italic; display:inline-block; margin-right:5px;">Don't forget to check out:-</span><a href="https://www.w3web.net/" target="_blank" rel="noopener noreferrer" style="text-decoration:none;" data-aura-rendered-by="440:0">An easy way to learn step-by-step online free Salesforce tutorial, To know more Click  <span style="color:#ff8000; font-size:18px;" data-aura-rendered-by="442:0">Here..</span></a></strong></p>

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            <br/><br/>
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            <p data-aura-rendered-by="435:0"><img src="https://www.w3web.net/wp-content/uploads/2021/07/tickMarkIcon.png" width="25" height="25" style="vertical-align:top; margin-right:10px;" data-aura-rendered-by="436:0"><strong data-aura-rendered-by="437:0"><span style="font-size:17px; font-style:italic; display:inline-block; margin-right:5px; color:rgb(255 128 0);">You May Also Like →</span> </strong></p>

            <div style="display:block; overflow:hidden;">

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                    </ul>
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            </div>
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            <div style="width: 50%; float:left; display:inline-block">

                    <ul style="list-style-type: square; font-size: 16px; margin: 0 0 0 54px; padding: 0;">

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                    </ul>
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                </div>
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               <div style="clear:both;"></div>

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               <br/>
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                <div class="youtubeIcon">

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                </div>
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    </div>
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</div>
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    </lightning-card>
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</template>
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Step 2:- Create Lightning Web Component : lwcFetchContactRecord.js

SFDX:Lightning Web Component >> New >> lwcFetchContactRecord.js

lwcFetchContactRecord.js [LWC JavaScript File]

   import { api, LightningElement, track } from 'lwc';

```
 
```

import getContactList from '@salesforce/apex/lwcAppExampleApex.getContactList';

import {NavigationMixin} from 'lightning/navigation';

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```

export default class lwcFetchContactRecord extends NavigationMixin (LightningElement) {

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  @api title;
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  @api greetings;
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   @track contactData;
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   @track conError;
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   @track contactTable = [
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     {label:'First Name', fieldName:'FirstName', type:'text'},

     {label:'Last Name', fieldName:'LastName', type:'text'},

     {label:'Phone', fieldName:'Phone', type:'text'},

     {label:'Email', fieldName:'Email', type:'email'},

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   ];
```
```
 
```
```
   connectedCallback(){
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      getContactList()
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      .then(result =>{
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```
          this.contactData = result;
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```
      })
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      .catch(error =>{
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```
          this.conError=error;
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      });
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    }
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}
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Step 3:- Create Lightning Web Component : lwcFetchContactRecord.js-meta.xml

SFDX:Lightning Web Component >> New >> lwcFetchContactRecord.js-meta.xml

lwcFetchContactRecord.js-meta.xml [LWC Meta Data XML]

  <?xml version="1.0" encoding="UTF-8"?>

<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">

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    <apiVersion>45.0</apiVersion>
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    <isExposed>true</isExposed>
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    <targets>
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        <target>lightning__AppPage</target>

        <target>lightning__RecordPage</target>

        <target>lightning__HomePage</target>

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      </targets>
```
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      <targetConfigs>
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         <targetConfig targets="lightning__AppPage">

           <property name="title" type="string"/>

           <property name="greetings" type="string"/>

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         </targetConfig>
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```
      </targetConfigs>
```
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</LightningComponentBundle>
```

Step 4:- Create Apex Controller : lwcAppExampleApex.cls

SFDX:Create Apex Class >> New >> lwcAppExampleApex.cls

lwcAppExampleApex.cls [Apex Class]

   public WITH sharing class lwcAppExampleApex {

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```
```
    @AuraEnabled
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    public static List<Contact> getContactList(){

        List<Contact> conList = [SELECT Id, FirstName, LastName, Email, Phone FROM Contact WHERE Email !=NULL ];

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        RETURN conList;
```
```
    }   
```
```
 
```
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}
```

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FAQ (Frequently Asked Questions)

How do you call an apex imperatively in LWC?

To call the apex method imperatively, we need to import the method from @salesforce/apex/ module in variable accounts. Then we can use this variable to call the method and pass the parameters if required. This method will return the Promise.

How do you call APEX method imperatively LWC with parameters?

Pass parameters values to an Apex method in an object whose properties match the parameters of the Apex method. For example, if the Apex method takes a string parameter, don't pass a string directly. Instead, pass an object that contains a property whose value is a string.

How do you call an Apex class from a custom button in Salesforce?

To call an Apex class from custom button or link on the object detail page, create a VisualForce page and call the Apex class method via the action attribute to make it work. Following is some sample code showing how to do that. The action method invoked when this page is requested by the server.

Vijay Kumar

Hi, This is Vijay Kumar behind the admin and founder of w3web.net. I am a senior software developer and working in MNC company from more than 8 years. I am great fan of technology, configuration, customization & development. Apart of this, I love to write about Blogging in spare time, Working on Mobile & Web application development, Salesforce lightning, Salesforce LWC and Salesforce Integration development in full time. [Read full bio] | | The Sitemap where you can find all published post on w3web.net