Salesforce Survey using Apex

How to Customize Salesforce Survey

Below are steps to enable Salesforce Survey and to use in LWC. Below Sample code will tell you how to Initiate a Salesforce Survey from Case Record. 

Step-1: Enable Salesforce Survey in Salesforce.

Setup-> quick find (Survey)->Survey Settings Enable

Step-2: Enable Community and activate community and give guest user profile access of following Object: Survey(READ), Survey Invitation (READ), Survey Response(READ,CREATE, EDIT)

click on Community ->Builder ->Administration-> Pages-> Goto Force.com-> Click on Public Access Settings-> Edit the Profile and give Object Access

Step-3: Data Model of Survey

Step-4: goto Survey Tab and create one Survey and make it active.

Step-5: Create a Case(Lookup) on Survey Invitation Object.

Step-6: Create this Exception Class:

public  class MyException extends Exception{}

Step-7: Create this LWC: sampleSurvey.html

<template>

    <lightning-button title="Click me" label="Click me" onclick={Opensurvey}></lightning-button>

</template>

Step-8: Create JS: sampleSurvey.js

import { LightningElement, track, api, wire } from 'lwc';

import CreateSurveyInvWrpResult from '@salesforce/apex/SampleSurveyController.CreateSurveyInvWrpResult';

export default class SampleSurvey extends LightningElement {

    @track weburl;

    @track error;

    @track msg;

    @api recordId;

    Opensurvey() {

        CreateSurveyInvWrpResult({ CaseId: this.recordId })

            .then(result => {

                this.msg = result;

                var obj = JSON.parse(JSON.stringify(this.msg));

                if (obj.bError == true) {

                    alert(obj.strMsg);

                }

                if (obj.bError == false) {

                    window.open(obj.strMsg);

                }

                this.error = undefined;

            })

            .catch(error => {

                this.msg = error;

                this.error = undefined;

                alert('In error' + this.msg);

            });

    }

}

Step-9: Create Apex class : SampleSurveyController.cls

public with sharing class SampleSurveyController {

    public SampleSurveyController() {

    }

    @AuraEnabled

    public static WrapperResult CreateSurveyInvWrpResult(String CaseId) {

        string CaseNumber;

        string communityId;

        string SurveyId;

        string ContactEmail;

        string ContactId;

        string surveyInvd;

        string strSurveyURL;

        communityId = [select Id from Network where Name = 'survey'].Id;

        SurveyId = [Select Id from Survey where Name = 'samplesurvey'].Id;

        WrapperResult WrpResult = new WrapperResult(null, null);

        try {

            list<SurveyInvitation> lstSurveyInv = [select id from SurveyInvitation where Case__c = :CaseId];

            if(lstSurveyInv.size() > 0) {

                throw new MyException('Survey for this case is already completed.');

            }

            SurveyInvitation SInv = New SurveyInvitation();

            Sinv.CommunityId = communityId;

            SInv.Name = caseId;

            SInv.Case__c = CaseId;

            //SInv.ParticipantId='0036g00000A04uWAAR';//userInfo.getUserId();

            SInv.OptionsCollectAnonymousResponse = true;

            SInv.OptionsAllowGuestUserResponse = true;

            SInv.SurveyId = SurveyId;

            insert SInv;

            SurveySubject SS = new SurveySubject();

            SS.SubjectId = CaseId;

            SS.ParentId = SInv.Id;

            SS.Name = CaseId;

            insert SS;

            SurveyInvitation sInvRecord = [Select id, UUID from SurveyInvitation where id = :SInv.id];

            string UniquieInviteId = sInvRecord.UUID;

            //https://surveyamul-developer-edition.na174.force.com/survey/survey/runtimeApp.app?invitationId=0Ki6g000000DqqM&surveyName=samplesurvey&UUID=da11d795-ff3d-486e-819a-ffc08056234a

            strSurveyURL= system.label.Survey_Base_URL + '' + SInvRecord.id + '&surveyName=samplesurvey&UUID=' + UniquieInviteId;

            system.debug('survey url' + json.serialize(strSurveyURL));

            WrpResult= new WrapperResult(false, strSurveyURL);

            return WrpResult;

        } catch(exception e) {

            System.debug('The following exception has occurred while inserting SurveySubject: ' + e.getMessage());

            strSurveyURL= e.getMessage();

            WrpResult= new WrapperResult(true, e.getMessage());

            return WrpResult;

        } finally {

            return WrpResult;

        }

    }

    public class WrapperResult {

        @AuraEnabled public boolean bError { get; set; }

        @AuraEnabled public string strMsg { get; set; }

        public WrapperResult(boolean bErr, string strMessage) {

            this.bError = bErr;

            this.strMsg = strMessage;

        }

    }

}

Step-10: Enable the Above LWC page in Case Page Layout.

Step-11: On Click Me your Survey URL will open: