Tag Archives: Pagination

Salesforce Lightning Datatable With Pagination

Apex Class:

public class SampleController {
    
    //Get Account Records
    @AuraEnabled
    public static List<Account> getAccounts(String pageSize, String pageNumber){
        Integer psize = Integer.valueOf(pageSize);
        Integer pnumber = Integer.valueOf(pageNumber)-1;
        
        List<Account> accList = [SELECT Id, Name, AccountNumber, Industry, Phone
                                  FROM Account LIMIT :Integer.valueOf(psize) OFFSET :(psize*pnumber)];
        return accList;
    }
    
    //Delete Account
    @AuraEnabled
    public static void deleteAccount(Account acc){
        Delete acc;
    } 
}

Lightning Component:

<aura:component implements="force:appHostable,flexipage:availableForAllPageTypes" access="global" controller="SampleController">
    
    <aura:attribute name="data" type="Object"/>
    <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="dataSize" type="Integer" default="0"/> 
    <aura:handler name="init" action="{!c.doInit}" value="{!this}"/>
    
    <div class="slds-m-around_xx-large">
        <div class="slds-clearfix">
            <div class="slds-page-header" role="banner">
                <p class="slds-page-header__title">Accounts</p>
            </div>
        </div>
        
        <lightning:datatable aura:id = "accDT"
                             columns = "{!v.columns}"
                             maxRowSelection="{!v.maxRowSelection}"
                             data = "{!v.data}"
                             keyField = "Id"
                             selectedRows = "{!v.selectedRowList}"
                             onrowaction="{!c.handleRowAction}"/>
        
        <div class="slds-clearfix">
            <div class="slds-page-header" role="banner">
                <div class="slds-float_right">            
                    <lightning:button label="Prev" iconName="utility:chevronleft" iconPosition="left"
                                      onclick="{!c.handlePrev}" disabled="{! v.pageNumber == 1}"/>
                    <lightning:button label="Next" iconName="utility:chevronright" iconPosition="right" 
                                      disabled="{! v.isLastPage}" onclick="{!c.handleNext}"/>
                </div>
                <p class="slds-page-header__title">Page {!v.pageNumber} | Showing records from {! ((v.pageNumber-1)*v.pageSize)+' to '+((v.pageNumber-1)*v.pageSize+v.dataSize)}</p>
            </div>
        </div>
    </div>
</aura:component>

Lightning JS Controller:

({
    doInit : function(component, event, helper) {        
        helper.getColumnAndAction(component);
        helper.getAccounts(component, helper);
    },
    
    handleNext : function(component, event, helper) { 
        var pageNumber = component.get("v.pageNumber");
        component.set("v.pageNumber", pageNumber+1);
        helper.getAccounts(component, helper);
    },
    
    handlePrev : function(component, event, helper) {        
        var pageNumber = component.get("v.pageNumber");
        component.set("v.pageNumber", pageNumber-1);
        helper.getAccounts(component, helper);
    },

    handleRowAction: function (component, event, helper) {
        var action = event.getParam('action');
        switch (action.name) {
            case 'edit':
                helper.editRecord(component, event);
                break;
            case 'delete':
                helper.deleteRecord(component, event);
                break;
            case 'view':
                helper.viewRecord(component, event);
                break;
        }
    },
})

Lightning JS Helper:

({
    getColumnAndAction : function(component) {
        var actions = [
            {label: 'Edit', name: 'edit'},
            {label: 'Delete', name: 'delete'},
            {label: 'View', name: 'view'}
        ];
        component.set('v.columns', [
            {label: 'Name', fieldName: 'Name', type: 'text'},
            {label: 'AccountNumber', fieldName: 'AccountNumber', type: 'text'},
            {label: 'Industry', fieldName: 'Industry', type: 'text'},
            {label: 'Phone', fieldName: 'Phone', type: 'phone'},
            {type: 'action', typeAttributes: { rowActions: actions } } 
        ]);
    },
    
    getAccounts : function(component, helper) {
        var action = component.get("c.getAccounts");
        var pageSize = component.get("v.pageSize").toString();
        var pageNumber = component.get("v.pageNumber").toString();
        
        action.setParams({
            'pageSize' : pageSize,
            'pageNumber' : pageNumber
        });
        action.setCallback(this,function(response) {
            var state = response.getState();
            if (state === "SUCCESS") {
                var resultData = response.getReturnValue();
                if(resultData.length < component.get("v.pageSize")){
                    component.set("v.isLastPage", true);
                } else{
                    component.set("v.isLastPage", false);
                }
                component.set("v.dataSize", resultData.length);
                component.set("v.data", resultData);
            }
        });
        $A.enqueueAction(action);
    },
    
    viewRecord : function(component, event) {
        var row = event.getParam('row');
        var recordId = row.Id;
        var navEvt = $A.get("event.force:navigateToSObject");
        navEvt.setParams({
            "recordId": recordId,
            "slideDevName": "detail"
        });
        navEvt.fire();
    },
    
    deleteRecord : function(component, event) {
        var action = event.getParam('action');
        var row = event.getParam('row');
        
        var action = component.get("c.deleteAccount");
        action.setParams({
            "acc": row
        });
        action.setCallback(this, function(response) {
            var state = response.getState();
            if (state === "SUCCESS" ) {
                var rows = component.get('v.data');
                var rowIndex = rows.indexOf(row);
                rows.splice(rowIndex, 1);
                component.set('v.data', rows);
                var toastEvent = $A.get("e.force:showToast");
                toastEvent.setParams({
                    "title": "Success!",
                    "message": "The record has been delete successfully."
                });
                toastEvent.fire();
            }
        });
        $A.enqueueAction(action);
    },
    
    editRecord : function(component, event) {
        var row = event.getParam('row');
        var recordId = row.Id;
        var editRecordEvent = $A.get("e.force:editRecord");
        editRecordEvent.setParams({
            "recordId": recordId
        });
        editRecordEvent.fire();
    },    
})

Output: