List on Wrapper class not visible in lightning component

Question

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 {

@AuraEnabled
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){
        if(riskMap.get(thisRisk.pse__Project__c)==null){
            List<pse__Risk__c> thisRiskList = new List<pse__Risk__c>();
            thisRiskList.add(thisRisk);
            riskMap.put(thisRisk.pse__Project__c,thisRiskList);
        } else {
            riskMap.get(thisRisk.pse__Project__c).add(thisRisk);
        }
    }
    //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){
        if(issueMap.get(thisIssue.pse__Project__c)==null){
            List<pse__Issue__c> thisIssueList = new List<pse__Issue__c>();
            thisIssueList.add(thisIssue);
            IssueMap.put(thisIssue.pse__Project__c,thisIssueList);
        } else {
           issueMap.get(thisIssue.pse__Project__c).add(thisIssue);
        }
    }

    //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
        if(riskMap.get(thisProject.Id)!=null){   
            obj.riskList = riskMap.get(thisProject.Id);
            obj.riskCount = obj.riskList.size();
        } else {
           obj.riskCount = 0; 
        }

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

        obj.cardTitle = thisProject.Name;
        projectProgresses.add(obj);
    }
    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');

        action.setCallback(this,function(response){
            component.set('v.myProjectProgressList', response.getReturnValue());    
        });
        $A.enqueueAction(action);
    }
})

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
          <ul>
               <aura:iteration items="{!projectProgress.issueList}" var="issue">
                    <li>{!issue.Name}</li> //is null, doesn't show
               </aura:iteration>
          </ul>
     </aura:iteration>
 </aura:component>

Answer 1

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 :)

Answer 2

   if(riskMap.get(thisProject.Id)!=null){   
            obj.riskList = new List<PSE_Risk__c>(riskMap.get(thisProject.Id));
            obj.riskCount = obj.riskList.size();
        } else {
           obj.riskCount = 0; 
        }

        //add issues from the map
        if(issueMap.get(thisProject.Id)!=null){
            obj.issueList = new List<PSE_Issue__c>(issueMap.get(thisProject.Id));
            obj.issueCount = obj.issueList.size();
        } else {
           obj.issueCount = 0; 
        }