Hey guys, In this post we are going to learn about how to Display an Upload Icon on the lightning component if a object record has files or any kind of attachment..
Requirement:- If upload a custom file on lightning component such like (jpg’, ‘jpeg’,’pdf’, ‘doc’) etc.. then against of every record display should be an attachment Image on right side of table.
Files we used in this post example:-
| fileAttachmentCmp.cmp | Lightning Component | It is used for display the name, address, email, and upload file button on the table. |
| fileAttachmentCmpConroller.js | JavaScript Controller File | It is used for communicate to server side apex method and fetch the record using init fuction. |
| fileAttachmentCmpHelper.js | JavaScript Helper File | It is used for refresh the page after delete the record. |
| wrapperCustomObjCtrCmp.apxc | Apex Class Controller | It is used for save the upload images on sObject database. |
|
Custom Object:- NewStudent__c Custom Object Fields:- Name, Email__c Address__c |
Custom Object and their fields | Display an upload Image on right side of table in the lightning component if a record has an attachment. |
Final Output
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Step 1:- Create Lightning Component : fileAttachmentCmp.cmp
From Developer Console >> File >> New >> Lightning Component
fileAttachmentCmp.cmp [Lightning Component File]
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<aura:component controller="wrapperCustomObjCtrCmp" implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction,lightning:isUrlAddressable" 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=""/> <aura:attribute name="accept" type="List" default="['.jpg', '.jpeg','.pdf']"/> <aura:attribute name="multiple" type="Boolean" default="true"/> <aura:attribute name="disabled" type="Boolean" default="false"/> <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>Record Id</th> <th>Student Name</th> <th>Address</th> <th>Email</th> <th>Upload File</th> <th></th> </tr> </thead> <tbody> <aura:iteration items="{!v.wrapListItems}" var="wrapVar" indexVar="index"> <tr id="{!wrapVar.recStudentId}"> <td>{!wrapVar.recStudentId}</td> <td>{!wrapVar.studentName}</td> <td>{!wrapVar.studentAddress}</td> <td>{!wrapVar.studentEmail}</td> <td> <lightning:fileUpload multiple="{!v.multiple}" accept="{!v.accept}" recordId="{!wrapVar.recStudentId}" onuploadfinished="{!c.uploadFileAction}" disabled="{!v.disabled}"/> </td> <td> <aura:if isTrue="{!wrapVar.checkAttachFile}"> <lightning:buttonIcon tabindex="{!wrapVar.recStudentId}" iconName="utility:upload" name="{!wrapVar.recStudentId}" variant="bare" onclick="{!c.navigateAttachFile}"/> </aura:if> </td> </tr> </aura:iteration> </tbody> </table> </div> </aura:component> |
Step 2:- Create Lightning Component : fileAttachmentCmpConroller.js
From Developer Console >> File >> New >> Lightning Component >> JavaScript Controller
fileAttachmentCmpConroller.js [JavaScript Controller]
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({ doInit : function(component, event, helper) { var action = component.get("c.appCustomWrapListMthd"); action.setCallback(this, function(response){ var state = response.getState(); if(state=='SUCCESS'){ var result = response.getReturnValue(); component.set('v.wrapListItems',result); } }); $A.enqueueAction(action); }, uploadFileAction : function(component, event, helper) { var uploadedFiles = event.getParam("files"); var documentId = uploadedFiles[0].documentId; var fileName = uploadedFiles[0].name; var toastEvent = $A.get("e.force:showToast"); toastEvent.setParams({ "title": "Success!", "type": "success", "message": "File "+fileName+" Uploaded successfully." }); toastEvent.fire(); $A.get('e.force:refreshView').fire(); }, }) |
Step 3:- Create Lightning Component : fileAttachmentCmpHelper.js
From Developer Console >> File >> New >> Lightning Component >> JavaScript Helper
fileAttachmentCmpHelper.js [JavaScript Helper File]
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({ 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); } }) |
Step 4:- Create Lightning Application : wrapperCustomObjCtrCmp.apxc
From Developer Console >> File >> New >> Apex Class
wrapperCustomObjCtrCmp.apxc [Apex Class Controller]
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public class wrapperCustomObjCtrCmp { public class wrapperCustomClass{ @AuraEnabled public string studentName; @AuraEnabled public string studentEmail; @AuraEnabled public string studentAddress; @AuraEnabled public Id recStudentId; @AuraEnabled public boolean checkAttachFile= false; public wrapperCustomClass(string studentName, string studentEmail, string studentAddress, Id recStudentId,boolean checkAttachFile){ this.studentName = studentName; this.studentEmail = studentEmail; this.studentAddress = studentAddress; this.recStudentId = recStudentId; this.checkAttachFile=checkAttachFile; } } @AuraEnabled public static List<wrapperCustomClass> appCustomWrapListMthd(){ List<NewStudent__c> newStudent = new List<NewStudent__c>(); List<wrapperCustomClass> custWrapObj = new List<wrapperCustomClass>(); List<NewStudent__c> newStudentView =[Select Id, Name, Email__c, Address__c From NewStudent__c]; Map<Id,contentdocumentlink> projCheckIdDocMap = new Map<Id,contentdocumentlink> (); Set<Id> projChecklistIdSet= new Set<Id> (); for(NewStudent__c de: newStudentView) { projChecklistIdSet.add(de.Id); } List<Contentdocumentlink> listDocs = [select Id,LinkedEntityId from contentdocumentlink where LinkedEntityId IN :projChecklistIdSet ]; for(Contentdocumentlink doc: listDocs) { projCheckIdDocMap.put(doc.LinkedEntityId, doc); } boolean hasAttch= false; for(NewStudent__c studentObj:newStudentView){ if(projCheckIdDocMap.get(studentObj.Id)!=null){ hasAttch=true; system.debug('hasAttch###' + hasAttch); }else{ hasAttch=false; } custWrapObj.add(new wrapperCustomClass(studentObj.Name,studentObj.Email__c, studentObj.Address__c,studentObj.Id, hasAttch)); } return custWrapObj; } } |
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