I have an Aura component and I want to iterate through a wrapper class of objects, which has two lists as properties. While I can iterate through the wrapper class list, my lists come up as null when I try to iterate through them. My unit tests show me it's not an Apex issue--the lists are filled. But something is stopping my lists from showing as filled when I try to iterate through them. Am I missing something about how my lists need to be set? Or am I missing an Aura visibility wrinkle?

Wrapper class:

public with sharing class projectProgress {
    @AuraEnabled public integer riskCount {get;set;} //count of risks related to project
    @AuraEnabled public integer riskProgress {get;set;} //value for risk progress bar
    @AuraEnabled public integer issueCount {get;set;} //count of issues related to project
    @AuraEnabled public string projectstage {get;set;} //value for project stage
    @AuraEnabled public string cardTitle {get;set;} //value for project stage
    @auraEnabled public PSE__Proj__c project{get;set;} //current project record
    @auraEnabled public List<PSE__Risk__c> riskList{get;set;} //current Risks
    @auraEnabled public List<PSE__Issue__c> issueList{get;set;} //current Issues

    public projectProgress() {
        riskList = new List<pse__Risk__c>(); 
        issueList = new List<pse__Issue__c>();

My Apex controller for the component generates a list of projectProgress objects from an initial SOQL of the project object, and then adds lists of related risks and issues.

public with sharing class progressPageController {

public static List<projectProgress> initClass(){
    List<projectProgress> projectProgresses = new List<projectProgress>();
    //get projects
    Map<ID, pse__proj__c> projectsMap = new Map<ID, pse__proj__c>([SELECT Id, Name, ... FROM PSE__Proj__c WHERE ... ORDER BY ...]);        

    //get risks
    List<pse__Risk__c> risks = [SELECT Id, pse__Project__c, Name ... FROM pse__Risk__c WHERE pse__Project__c IN :projectsMap.keySet()];

    //map for holding risks by project id
    Map<Id,List<pse__Risk__c>> riskMap = new Map<Id,List<pse__Risk__c>>();

    //loop through and add to map
    for(pse__Risk__c thisRisk : risks){
            List<pse__Risk__c> thisRiskList = new List<pse__Risk__c>();
        } else {
    //get issues
    List<pse__Issue__c> issues = [SELECT Id, pse__Project__c, Name FROM PSE__Issue__c WHERE pse__Project__c IN :projectsMap.keySet()];

    //map for holding issues by project id
    Map<Id,List<pse__Issue__c>> issueMap = new Map<Id,List<pse__Issue__c>>();

    //loop through and add to map
    for(pse__Issue__c thisIssue : issues){
            List<pse__Issue__c> thisIssueList = new List<pse__Issue__c>();
        } else {

    //loop through all projects creating projectProgress objects
    for(pse__proj__c thisProject : projectsMap.values()){
        projectProgress obj = new projectProgress();
        obj.project = thisProject;

        //set stage for everything but In Progress
        if(thisProject.pse__Stage__c <> 'In Progress'){
            obj.projectstage = thisProject.pse__Stage__c;

        //add risks from the map
            obj.riskList = riskMap.get(thisProject.Id);
            obj.riskCount = obj.riskList.size();
        } else {
           obj.riskCount = 0; 

        //add issues from the map
            obj.issueList = issueMap.get(thisProject.Id);
            obj.issueCount = obj.issueList.size();
        } else {
           obj.issueCount = 0; 

        obj.cardTitle = thisProject.Name;
    return projectProgresses;

My JS controller is very simple, it just loads up a list of objects

    doInit : function(component, event, helper) {
        //call apex class method
        var action = component.get('c.initClass');

            component.set('v.myProjectProgressList', response.getReturnValue());    

My component iterates through the wrapper class and everything works great except the lists, which are empty, even though my apex unit tests show them as having objects in them. So I think it's a visibility issue.

<aura:component controller="progressPageController" implements="force:appHostable,flexipage:availableForAllPageTypes" access="global" >
<aura:handler name="init" value="{!this}" action="{!c.doInit}"/>
<aura:attribute name="myProjectProgressList" type="List"/>
     <aura:iteration items="{!v.myProjectProgressList}" var="projectProgress">
          {!projectProgress.project.Name} //works fine
               <aura:iteration items="{!projectProgress.issueList}" var="issue">
                    <li>{!issue.Name}</li> //is null, doesn't show
  • Your code doesn't make it obvious, so I have to ask... did you actually query pse__Risk__c.Name in your Apex code? SOQL only returns fields that you explicitly query.
    – sfdcfox
    Jun 5 '19 at 1:34
  • On this: even though my apex unit tests show them as having objects in them -- your test data vs. org data supposedly (and should be) is different. Are you sure that when your component runs, the SOQL you have to fetch the issues returns records?
    – Jayant Das
    Jun 5 '19 at 1:55
  • Yes, I am SOQLing all the fields I am using in the component. And, in my tests, I check for risks and issues by the project id created in the test, so i'm not getting org data. Jun 5 '19 at 2:56
  • @SteveAndersen And that's exactly what I was referring to. Are you sure that the apex when called from the aura component fetches the records? A good way will be to put a system.debug and verify in the class and see if at all your list is populated with records or not.
    – Jayant Das
    Jun 5 '19 at 12:58
  • ALso can you do console.log(JSON.stringify(response.getReturnValue())); to see if you recieve result from apex? Jun 5 '19 at 13:24

I can see in your Apex Class you are missing Name in the SOQL.

Use below SOQL where I have added Name in the SOQL

    List<pse__Issue__c> issues = [SELECT Id, pse__Project__c, Name FROM PSE__Issue__c WHERE pse__Project__c IN :projectsMap.keySet()];

After replacing your SOQL then try to run the Lightning Component as You are {!issue.Name} in the lightning component so you must need to include Name in the SOQL.

Let me know if this works for you :)

  • Thanks for seeing that--it was a mistake in copying over. When I SOQL the Name field, I get the same result. The list issuesList appears to have no objects in it. Jun 5 '19 at 13:16

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