2

I want lightning code similar to this C code:

for (int i = 0; i < childs.size(); i++)
{
    if (parents[i] == childs[i])
        cout << parents[i] << " is a parent of " << childs[i] << endl;
}

I have two attributes for the array, parents and childs and I pull the correct data. I tried this:

<aura:iteration items="{!v.childs}" var="child" indexVar="index">
    <aura:if isTrue="{!v.parents[index] == child}" >
    {!v.parents[index]} is a parent to child <br></br>
    </aura:if>                  
</aura:iteration>

I figured the indexVar field would be what I wanted but it doesn't seem to be the case.

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3
  • 3
    In this case you should be using Map. Commented May 26, 2017 at 6:56
  • You logic v.parents[index] == child seems to be saying "parent object is child object" not "is a parent to child". Is there a field you should be comparing e.g. v.parents[index].Id == child.Parent__c? Using indexVar seems reasonable to me.. Commented May 26, 2017 at 8:05
  • 2
    you can't use the indexVar as part of an evaluated expression, unfortunately. Commented May 26, 2017 at 8:40

1 Answer 1

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2

It's simple as below... Just use your child array again with aura:iteration and compare it with parent iteration.

<aura:iteration items="{!v.parents}" var="parents">
  <aura:iteration items="{!v.childs}" var="childs">
    <aura:if isTrue="{!childs == parents}">
        {!childs}
    </aura:if>
  </aura:iteration>
</aura:iteration>
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