Resume a Flow Interview from a Lightning Component

By default, users can resume their paused interviews from the Paused Interviews component on their home page in Salesforce Classic. If you want to customize how and where users can resume their interviews, pass the interview ID into the resumeFlow method in your JavaScript controller.

1({
2    init : function (component) {
3        // Find the component whose aura:id is "flowData"
4        var flow = component.find("flowData");
5        
6        // In that component, resume a paused interview. Provide the method with
7        // the ID of the interview that you want to resume.
8        flow.resumeFlow("pausedInterviewId");
9     },
10})

Example

This example show how you can resume an interview—or start a new one. When users click Survey Customer from a contact record, the Lightning component does one of two things.

If the user has any paused interviews for the Survey Customers flow, it resumes the first one.
If the user doesn’t have any paused interviews for the Survey Customers flow, it starts a new one.

1<aura:component controller="InterviewsController">
2    <aura:handler name="init" value="{!this}" action="{!c.init}" />
3    <lightning:flow aura:id="flowData" />
4</aura:component>

This Apex controller performs a SOQL query to get a list of paused interviews. If nothing is returned from the query, getPausedId() returns a null value, and the component starts a new interview. If at least one interview is returned from the query, the component resumes the first interview in that list.

1public class InterviewsController {
2   @AuraEnabled
3   public static String getPausedId() {
4      // Get the ID of the running user
5      String currentUser = UserInfo.getUserId();
6      // Find all of that user's paused interviews for the Survey customers flow
7      List<FlowInterview> interviews =
8         [ SELECT Id FROM FlowInterview
9           WHERE CreatedById = :currentUser AND InterviewLabel LIKE '%Survey customers%'];
10      
11      if (interviews == null || interviews.isEmpty()) {
12         return null; // early out
13      }
14      // Return the ID for the first interview in the list
15      return interviews.get(0).Id;
16   }
17}

If the JavaScript controller got an interview ID back from the Apex controller, the component resumes that interview. If the Apex controller returned a null interview ID, the component starts a new interview.

1({
2   init : function (component) {
3       //Create request for interview ID
4       var action = component.get("c.getPausedId");
5       action.setCallback(this, function(response) {
6          var interviewId = response.getReturnValue();
7          // Find the component whose aura:id is "flowData"
8          var flow = component.find("flowData");
9          // If an interview ID was returned, resume it in the component
10          // whose aura:id is "flowData".
11          if ( interviewId !== null ) { 
12             flow.resumeFlow(interviewID);
13          }
14          // Otherwise, start a new interview in that component. Reference
15          // the flow's Unique Name.
16          else {
17             flow.startFlow("Survey_customers");
18          }
19       });
20       //Send request to be enqueued
21       $A.enqueueAction(action);
22   },
23})

Lightning Components Developer Guide

Resume a Flow Interview from a Lightning Component

Example