How to retrieve data from multiple object and delete cross object records of selected row using apex wrapper class lightning component in Salesforce | how to delete cross object records of selected row

Hey guys, today in this post we are going to learn about how to retrieve data from multiple object and delete cross object records of selected row using apex wrapper class lightning component in salesforce

Don’t forget to check out:- Editing row, Saving row and Removing rows Dynamically in Lightning component Salesforce Click Here For More Information

Files we used in this post example →

deleteNestedQueryWrapperCmp.cmp	Lightning Component	It is used for create a html table in lightning component.
deleteNestedQueryWrapperCmpController.js	JavaScript Controller File	It is used for fetch the retrieve related list record using init fuction.
deleteNestedQueryWrapperCmpHelper.js	JavaScript Helper File	It is used for refresh the content page after deleted the record.
deleteNestedQueryWrapperCmp.css	Component Style CSS	It is used for create a custom delete icon from static resource.
nestedQueryWrapperCtrl.apxc	Apex Class Controller	It’s retrieve the data from multiple object and delete cross object records of selected row from database server
Custom Parent Object:- NewStudent__c Custom Parent Object Fields:- Name, Email__c Address__c Custom Child Lookup Object:- Registration__c Custom Child Object Fields:- Name, RegNewStudent__r.Name RegCourse__r.Name DateOfRegistration__c	Custom Object and their fields	In this post we used two type of custom sObject. First is Parent object (NewStudent__c) and Second is child sObject (Registration__c).

Final Output →

You can download file directly from github by Click Here.

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Create Lightning Component →

Step 1:- Create Lightning Component : deleteNestedQueryWrapperCmp.cmp

From Developer Console >> File >> New >> Lightning Component

deleteNestedQueryWrapperCmp.cmp [Lightning Component File]

  <aura:component controller="nestedQueryWrapperCtrl" implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction" access="global" >

	<aura:attribute name="wrapListItems" type="NewStudent__c[]"/>

    <aura:handler name="init" value="{!this}" action="{!c.doInit}"/>

    <aura:attribute name="recSelectId" type="String" default=""/>

```
 
```

    <div class="slds slds-p-horizontal--medium">

        <table class="slds-table slds-table--bordered slds-table--col-bordered" style="border-collapse:collapse;">

```
            <thead> 
```
```
                <tr>
```

                    <th>Student Name</th>

```
                    <th>Address</th>
```

                    <th>Email</th>

```
                    <th>regNum</th>
```

                    <th>regStudentName</th>

                    <th>regCourseName</th>

                    <th>regDateOfReg</th>

```
                    <th></th>
```
```
 
```
```
                </tr>
```
```
            </thead>
```
```
            <tbody>
```

                <aura:iteration items="{!v.wrapListItems}" var="wrapVar" indexVar="index">

                    <tr id="{!wrapVar.recStudentId}">

                        <td>{!wrapVar.studentName}</td>

                        <td>{!wrapVar.studentAddress}</td>

                        <td>{!wrapVar.studentEmail}</td>

                        <td>{!wrapVar.regNum}</td>

                        <td>{!wrapVar.regStudentName}</td>

                        <td>{!wrapVar.regCourseName}</td>

                        <td>{!wrapVar.regDateOfReg}</td>

```
 
```

                       <td style="width:85px; ">

                                    <a href="javascript:void(0);"><span class="delSpan slds-m-left--small" title="Delete" onclick="{!c.deleteRowId}"

                                                                        data-sfid="{!wrapVar.recStudentId}"

                                                                        data-index="{!index}"></span></a>

```
 
```
```
                       </td> 
```
```
 
```
```
                    </tr>
```
```
                </aura:iteration>
```
```
            </tbody>
```
```
        </table>
```
```
 
```
```
 <br/><br/>
```
```
   
```

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

```
 
```

            <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>

```
 
```
```
            <br/><br/>
```

            <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>
```
```
            </div>
```
```
 
```

            <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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                        <li><a href="https://www.w3web.net/update-parent-object-from-child/" target="_blank" rel="noopener noreferrer">update parent field from child using apex trigger</a></li>

```
                    </ul>
```
```
                </div>
```

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

```
               <br/>
```

                <div class="youtubeIcon">

                    <a href="https://www.youtube.com/channel/UCW62gTen2zniILj9xE6LmOg" target="_blank" rel="noopener noreferrer"><img src="https://www.w3web.net/wp-content/uploads/2021/11/youtubeIcon.png" width="25" height="25" style="vertical-align:top; margin-right:10px;"/> <strong>TechW3web:-</strong> To know more, Use this <span style="color: #ff8000; font-weight: bold;">Link</span> </a>

```
                </div>
```
```
    </div>
```
```
 
```
```
</div>
```
```
 
```
```
  
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```
```
    </div>
```
```
</aura:component>
```

Create Component JavaScript Controller →

Step 2:- Create Lightning Component : deleteNestedQueryWrapperCmpController.js

From Developer Console >> File >> New >> Lightning Component >> JavaScript Controller

deleteNestedQueryWrapperCmpController.js [JavaScript Controller]

```
  ({
```

	doInit : function(component, event, helper) {

```
 
```

	  var action = component.get("c.appCustomWrapListMthd");

```
 
```

        action.setCallback(this, function(response){

            var state = response.getState();

```
            //alert(state);
```
```
            if(state=='SUCCESS'){
```

                var result = response.getReturnValue();

              //alert('result ' + JSON.stringify(result));

                component.set('v.wrapListItems',result);

```
            }
```
```
        });
```
```
        $A.enqueueAction(action);
```
```
 
```
```
	},
```
```
 
```
```
 
```
```
 
```

    deleteRowId:function(component,event,helper){

        var sfid = event.target.dataset.sfid;

        var action =component.get('c.delectRecId');

        action.setParams({'delRecId':sfid});

        action.setCallback(this, function(response){

            var state = response.getState();

```
            if(state == 'SUCCESS'){
```

                var result = response.getReturnValue();

```
 
```

                var wrapListItems = component.get( "v.wrapListItems" );

                component.set( "v.wrapListItems", wrapListItems );

                helper.refreshView(component);

                //alert('record deleted successfully');

                var eventToast = $A.get("e.force:showToast");

```
                eventToast.setParams({
```
```
                    "title":'Success',
```
```
                    "type":'success',
```

                    "message":'Record deleted successfully'

```
                   });
```
```
                 eventToast.fire();
```
```
 
```
```
            }
```
```
        });
```
```
        $A.enqueueAction(action);
```
```
    },
```
```
 
```
```
 
```
```
})
```

Create Component JavaScript Helper →

Step 3:- Create Lightning Component : deleteNestedQueryWrapperCmpHelper.js

From Developer Console >> File >> New >> Lightning Component >> JavaScript Helper

deleteNestedQueryWrapperCmpHelper.js [JavaScript Helper File]

```
    ({
```

	refreshView : function(component, event, helper) {

		var action = component.get("c.appCustomWrapListMthd");

```
 
```

        action.setCallback(this, function(response){

            var state = response.getState();

```
            //alert(state);
```
```
            if(state=='SUCCESS'){
```

                var result = response.getReturnValue();

               // alert('result ' + JSON.stringify(result));

                component.set('v.wrapListItems',result);

```
            }
```
```
        });
```
```
        $A.enqueueAction(action);
```
```
	}
```
```
})
```

Create Component Style CSS →

Step 4:- Create Lightning Component : Component Style CSS : deleteNestedQueryWrapperCmp.css

From Developer Console >> File >> New >> Lightning Component >> Lightning Component Style CSS

Lightning Component [Component Style CSS]

```
  .THIS {
```
```
}
```

.THIS .slds-table thead tr th{background-color:#eee;}

.THIS .slds-table thead tr th, .THIS .slds-table tbody tr td {border:1px #dddbda solid; border-collapse: collapse; white-space: normal;}

```
 
```

.THIS .delSpan:before{content:''; width:17px; height:17px; display:inline-block; background:url(https://www.w3web.net/wp-content/uploads/2022/01/delete.png) no-repeat left top; background-size:cover; cursor: pointer;}

Create Apex Class Controller →

Step 5:- Create Apex Class : nestedQueryWrapperCtrl.apxc

From Developer Console >> File >> New >> Apex Class

nestedQueryWrapperCtrl.apxc [Apex Class Controller]

   public class nestedQueryWrapperCtrl {

```
   public class wrapperCustomClass{
```
```
        @AuraEnabled
```
```
        public string studentName;
```
```
        @AuraEnabled
```
```
        public string studentEmail;
```
```
        @AuraEnabled
```
```
        public string studentAddress;
```
```
        @AuraEnabled
```
```
        public Id recStudentId;
```
```
 
```
```
 
```
```
        @AuraEnabled
```
```
        public string regNum;
```
```
        @AuraEnabled
```
```
        public string regStudentName;
```
```
        @AuraEnabled
```
```
        public string regCourseName;
```
```
        @AuraEnabled
```
```
        public DATE regDateOfReg;
```
```
        @AuraEnabled
```
```
        public BOOLEAN editMode;
```
```
 
```
```
 
```

        public wrapperCustomClass(string studentName, string studentEmail, string studentAddress, Id recStudentId,

                                                       string regNum,string regStudentName,string regCourseName,DATE regDateOfReg,BOOLEAN editMode){

         this.studentName = studentName;

         this.studentEmail = studentEmail;

         this.studentAddress = studentAddress;

         this.recStudentId = recStudentId;

```
 
```
```
 
```
```
         this.regNum = regNum;
```

         this.regStudentName = regStudentName;

         this.regCourseName = regCourseName;

         this.regDateOfReg = regDateOfReg;

```
         this.editMode=editMode;
```
```
 
```
```
        }
```
```
 
```
```
    }
```
```
 
```
```
 
```
```
    @AuraEnabled
```

    public static List<wrapperCustomClass> appCustomWrapListMthd(){

       List<NewStudent__c> newStudent = NEW List<NewStudent__c>();

       List<Registration__c> newRegistration = NEW  List<Registration__c>();

       List<wrapperCustomClass> custWrapObj = NEW  List<wrapperCustomClass>();

```
 
```
```
 
```

       List<NewStudent__c> newStudentView =[SELECT Id, Name, Email__c, Address__c,(SELECT Id, Name, RegNewStudent__r.Name, RegCourse__r.Name, DateOfRegistration__c FROM Registrations__r) FROM NewStudent__c];

        system.debug('newStudentView## ' + newStudentView);

        newRegistration = [SELECT Id, Name, RegNewStudent__r.Name, RegCourse__r.Name, DateOfRegistration__c FROM Registration__c ];

```
 
```

        FOR(NewStudent__c studentObj:newStudentView){

            FOR(Registration__c regObj:studentObj.Registrations__r){

                 custWrapObj.add(NEW wrapperCustomClass(studentObj.Name,studentObj.Email__c, studentObj.Address__c,

                                                  studentObj.Id,regObj.Name,regObj.RegNewStudent__r.Name,regObj.RegCourse__r.Name,regObj.DateOfRegistration__c,FALSE));

```
            }
```
```
 
```
```
        }
```
```
 
```

        system.debug('custWrap@@' + custWrapObj);

```
        RETURN custWrapObj;
```
```
 
```
```
    }    
```
```
 
```
```
 
```
```
    @AuraEnabled
```

    public static List<NewStudent__c> delectRecId(Id delRecId){

        DELETE [SELECT Id, (SELECT Id FROM Registrations__r WHERE RegNewStudent__c=:delRecId) FROM NewStudent__c WHERE Id=:delRecId];

        List<NewStudent__c> listStudent = [SELECT Id, Name, Email__c, Address__c,(SELECT Id, Name, RegNewStudent__r.Name, RegCourse__r.Name, DateOfRegistration__c FROM Registrations__r) FROM NewStudent__c];

```
        RETURN listStudent;
```
```
 
```
```
    }
```
```
 
```
```
}
```

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FAQ (Frequently Asked Questions)

Which method is better for searching across multiple objects in Salesforce?

SOSL is most useful when you don't know the exact fields and objects that your data resides in, and you need to search across multiple objects.

What is SOSL in Salesforce?

Salesforce Object Search Language (SOSL) is a Salesforce search language that is used to perform text searches in records. Use SOSL to search fields across multiple standard and custom object records in Salesforce.

Can we use joins in Salesforce?

In SOQL statements, Inner and Outer Joins are used to join related objects like parent object and child objects to retrieve all related fields from base objects including the records of non refer related object.

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