Thursday, February 4, 2021

jQuery Datatable in Lightning Web Component(lwc)

This post explains how to use jquery data tables in the lightning web component(lwc).


Prerequisites:

Step 1 : Download Required Resources 

1. Download jQuery DataTables Plugin

Click on the following link to download the DataTables library. [version 1.10.18]


This zip file includes CSS, javascript, and other files related to the plugin.

2. Download jQuery library [version 3.3.1 Recommended]

Click on the following link to download JQuery 3.3.1 minified version. [3.3.1 Recommended]


Step 2: Upload Files to static resource

upload files to static resourecs



Demo:

HTML Code:
<template>
   <lightning-card title="JQuery Datatable Demo">
      <div class="slds-m-around_medium">
         <table lwc:dom="manual"
            class="tableClass slds-table slds-table_cell-buffer slds-table_bordered" 
            style="width:100%">
         </table>
      </div>
   </lightning-card>
</template>
JS Code:
import {
    LightningElement
} from 'lwc';
import dataTableResource from '@salesforce/resourceUrl/DataTableDemo';
import JqueryResource from '@salesforce/resourceUrl/Jquery331';
import {
    loadScript,
    loadStyle
} from 'lightning/platformResourceLoader';
import {
    ShowToastEvent
} from 'lightning/platformShowToastEvent';
// import toast message event .

// import apex class and it's methods.
import getAccounts from '@salesforce/apex/LWCExampleController.getAccounts';

export default class JqueryDataTableLWCDemo extends LightningElement {
    accounts = [];
    error;

    async connectedCallback() {
        await this.fetchAccoutns();

        Promise.all([
            loadScript(this, JqueryResource),
            loadScript(this, dataTableResource + '/DataTables-1.10.18/js/jquery.dataTables.min.js'),
            loadStyle(this, dataTableResource + '/DataTables-1.10.18/css/jquery.dataTables.min.css'),
        ]).then(() => {
            console.log('script loaded sucessfully');

            const table = this.template.querySelector('.tableClass');
            const columnNames = ['Name', 'Industry', 'Type', 'Phone', 'Rating'];
            let tableHeaders = '<thead> <tr>';
            columnNames.forEach(header => {
                tableHeaders += '<th>' + header + '</th>';
            });
            tableHeaders += '</tr></thead>';
            table.innerHTML = tableHeaders;

            let jqTable = $(table).DataTable();
            $('div.dataTables_filter input').addClass('slds-input');
            $('div.dataTables_filter input').css("marginBottom", "10px");

            this.accounts.forEach(rec => {
                let tableRows = [];
                tableRows.push('<a href="/lightning/r/Account/' + rec.Id + '/view">' + rec.Name + '</a>');
                tableRows.push(rec.Industry != undefined ? rec.Industry : '');
                tableRows.push(rec.Type != undefined ? rec.Type : '');
                tableRows.push(rec.Phone != undefined ? rec.Phone : '');
                tableRows.push(rec.Rating != undefined ? rec.Rating : '');
                jqTable.row.add(tableRows);
            });
            jqTable.draw();

        }).catch(error => {
            this.error = error;
            this.dispatchEvent(
                new ShowToastEvent({
                    title: 'Error!!',
                    message: JSON.stringify(error),
                    variant: 'error',
                }),
            );
        });
    }

    async fetchAccoutns() {
        await getAccounts()
            .then(data => {
                if (data) {
                    this.accounts = data;
                }
            })
            .catch(error => {
                this.error = error;
                this.accounts = undefined;
                this.error = 'Unknown error';
                if (Array.isArray(error.body)) {
                    this.error = error.body.map(e => e.message).join(', ');
                } else if (typeof error.body.message === 'string') {
                    this.error = error.body.message;
                }
                this.dispatchEvent(
                    new ShowToastEvent({
                        title: 'Error!!',
                        message: error,
                        variant: 'error',
                    }),
                );
            });
    }
}
Apex Class
public inherited sharing class LWCExampleController {
	@AuraEnabled(Cacheable = true)
	public static List<Account> getAccounts(){
	  return [SELECT Id, Name,Industry, Type, Phone, Rating, AccountNumber FROM Account ORDER BY Name];
	}
}

Tuesday, February 2, 2021

Custom Spinner in Lightning Web Component(lwc)

 This post explains how to create a custom spinner in lightning web components(lwc)

HTML Code

<template>
   <lightning-card>
      <div align="center"  if:true={isSpinner}>
         <div class="loader"></div>
         Please wait...
      </div>
      <div align="center" if:true={showButon}>
         <lightning-button label="Enable Spinner" variant="brand" onclick={enableSpinner}>
         </lightning-button>
      </div>
   </lightning-card>
</template>

JS Code

import {
    LightningElement
} from 'lwc';
export default class Customspinner extends LightningElement {
    isSpinner = false;
    showButon = true;

    enableSpinner() {
        if (!this.isSpinner) {
            this.isSpinner = true;
            this.showButon = false;
        }
    }
}
CSS Code
.loader {
  border: 5px solid #f3f3f3;
  border-radius: 50%;
  border-top: 5px solid #3498db;
  width: 60px;
  height: 60px;
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear infinite;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
Output


Tuesday, January 19, 2021

Expand/Collapse Sections In Salesforce Lightning Web Component(lwc)

This post explains how to create expand/collapse sections in Salesforce Lightning Web Component(lwc) using the details tag in html.

Demo:

HTML Code:

<template>
    <lightning-card title="Expand/Collapse Sections In Salesforce Lightning Web Component"><br />
        <div style="padding-left: 10px;">
            <details open>
                <summary>India</summary>
                <ul>
                    <li>Hyderabad</li>
                    <li>Delhi</li>
                    <li>Mumbaie</li>
                </ul>
            </details><br>
            <details>
                <summary>USA</summary>
                <ul>
                    <li>New York</li>
                    <li>Las Vegas</li>
                    <li>Miami</li>
                </ul>
            </details><br>
            <details>
                <summary>China</summary>
                <ul>
                    <li>Shenzhen</li>
                    <li>Guangzhou</li>
                    <li>Shanghai</li>
                </ul>
            </details>
        </div>
    </lightning-card>
</template>

CSS

details > summary {
  padding: 4px;
  background-color: #eeeeee;
  outline: none;
}

Output