Add Pagination in Lightning Data Table...

Hello folks, please follow below code to add pagination in Lightning Data Table in Lightning Component.

AddPagination.cmp

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<aura:component controller="LightningDataTableCTRL" implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction" access="global" >
    <aura:attribute name="recordList" type="List"/>
    <aura:attribute name="columns" type="List"/>
    <aura:attribute name="pageNumber" type="Integer" default="1" />
    <aura:attribute name="pageSize" type="Integer" default="10" />
    <aura:attribute name="isLastPage" type="Boolean" default="false" />
    <aura:attribute name="totalPages" type="Integer"/>
    <aura:attribute name="totalRecords" type="Integer"  />
 <aura:attribute name="hasRecords" type="Boolean" default="false" />
    <aura:handler name="init" action="{!c.doInit}" value="{!this}" />
    
    <lightning:layout multipleRows="true" horizontalAlign="center">
        <lightning:layoutItem padding="around-small" size="12">
            <lightning:datatable keyField="id" data="{! v.recordList}"
                                 columns="{! v.columns}"
                                 hideCheckboxColumn="true"
                                 />
        </lightning:layoutItem>
        <aura:if isTrue="{!v.totalPages>1}">
            <lightning:layoutItem padding="around-small" flexibility="auto">
                <lightning:button label="First" iconName="utility:chevronleft" iconPosition="left"
                                  onclick="{!c.onFirst}" disabled="{! v.pageNumber==1}"/>
                <lightning:button label="Prev" iconName="utility:chevronleft" iconPosition="left"
                                  onclick="{!c.onPrev}" disabled="{! v.pageNumber == 1}"/>
                <span class="slds-p-horizontal_small">
                    Page {!v.pageNumber} | Showing records from {!((v.pageNumber-1)*v.pageSize)+1} to {!if(v.totalPages==v.pageNumber, v.totalRecords, (((v.pageNumber-1)*v.pageSize)+v.pageSize))}
                </span>
                <lightning:button label="Next" iconName="utility:chevronright" iconPosition="right" 
                                  disabled="{! v.isLastPage}" onclick="{!c.onNext}"/>
                <lightning:button label="Last" iconName="utility:chevronright" iconPosition="right" 
                                  disabled="{!v.isLastPage}" onclick="{!c.onLast}"/>
            </lightning:layoutItem>
            
        </aura:if>
        
    </lightning:layout>
</aura:component>


AddPaginationController.js

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({
    doInit : function(component, event, helper) {
        component.set('v.columns', [
            {label: 'Id', fieldName:'Id',sortable:true,type:'text', initialWidth: 300},
            {label: 'Name', fieldName:'Name',sortable:true,type:'text', initialWidth: 400},
            {label: 'Phone', fieldName:'Phone',sortable:true,type:'text', initialWidth: 300},
            {label: 'Created Date', fieldName:'CreatedDate',sortable:true,type:'text', initialWidth: 400}
        ]);
        helper.getAccounts(component, helper);
        helper.getAccountsCount(component, helper);
    },
   
    onFirst: function(component, event, helper) {
        var totalPages = component.get("v.totalPages");
        component.set("v.isLastPage", false);
        component.set("v.pageNumber", 1);
        helper.getAccounts(component, helper);     
    },
    onPrev: function(component, event, helper) {
        var pageNumber = component.get("v.pageNumber");
        var totalPages = component.get("v.totalPages");
        if(pageNumber <= totalPages){
            component.set("v.isLastPage", false);
            component.set("v.pageNumber", pageNumber-1);
            helper.getAccounts(component, helper);     
        } 
    },
    onNext: function(component, event, helper) {
        var pageNumber = component.get("v.pageNumber");
        var totalPages = component.get("v.totalPages");
        if(totalPages > pageNumber){
            component.set("v.pageNumber", pageNumber+1);
            helper.getAccounts(component, helper);
            if(pageNumber==(totalPages-1)){
                component.set("v.isLastPage", true); 
            }
        }
    },
    onLast: function(component, event, helper) {
        var lastPage = component.get("v.totalPages");
        component.set("v.isLastPage", true); 
        component.set("v.pageNumber", lastPage);
        helper.getAccounts(component, helper);
    },
    
})


AddPaginationHelper.js

 
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({
    getAccounts : function(component, helper) {
        var action = component.get("c.getAccountList");
         action.setParams({
            "pageSize" : component.get("v.pageSize").toString(),
            "pageNumber" : component.get("v.pageNumber").toString()
        });
        action.setCallback(this, function(response) {
            var state = response.getState();
            var data;
            if(state === 'SUCCESS'){
                var result = response.getReturnValue();
                component.set("v.recordList", result);
            }
        });
        $A.enqueueAction(action);
    },
    getAccountsCount: function(component, helper) {
        const action = component.get("c.getAccountCount");
        // Register the callback function
        action.setCallback(this, function(response) {
            var state = response.getState();
            if(state === 'SUCCESS'){
                var result = response.getReturnValue();
                var pageSize=component.get("v.pageSize");
                component.set("v.totalRecords", result)
                var totalPages = Math.ceil(result/pageSize);
                component.set("v.totalPages",totalPages);
            }
        });
        $A.enqueueAction(action);
    },
    
})


LightningDataTableCTRL.apxc
 

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public class LightningDataTableCTRL {
    @AuraEnabled
    public static list<Account> getAccountList(String pageSize, String pageNumber){
        String soql = 'Select Id, Name, Phone, CreatedDate From Account Order By CreatedDate';
        if(pageSize==null){
            pageSize='10';
        }
        if(pageNumber==null){
            pageNumber='1';
        }
        Integer ps = Integer.valueOf(pageSize);
        Integer pn = Integer.valueOf(pageNumber)-1;
        soql += ' limit '+ps+' OFFSET '+(ps*pn);
        
        List<Account> accList= Database.Query(soql);
        if(accList != null && accList.size()>0){
  return accList;
        }
        else{return null;}
    }
     @AuraEnabled
    public static Integer getAccountCount(){
        String soqlStr = 'Select COUNT() From Account';
        Integer recCount= database.countQuery(soqlStr);
        return recCount;
    }
}


Final Output

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