Ember resolver unable to find helper


I have a component which has bootstrap tabs and I am trying to use a helper to decide which tab is active


<div class="well">
<ul class="nav nav-tabs" role="tablist">
    <li class="{{if (check-equality activeComponent "comp1") "active"}}">
        <a {{action "makeActive" "comp1" }}>comp1</a>
    <li class="{{if (checkEquality activeComponent "comp2") "active"}}">
        <a {{action "makeActive" "comp2" }}>comp2</a>
<div class="info">
    {{component activeComponent}}


import Ember from 'ember';

export default Ember.Component.extend({
    activeComponent: null,

    setup: function() {
        this.activeComponent = "comp1";

    actions: {
        makeActive: function(clicked_tab) {
            this.set("activeComponent", clicked_tab);

As you can see the component uses a helper “check-equality”


import Ember from 'ember';

export function checkEquality(params, hash) {
  return (params[0] === params[1]);

export default Ember.Helper.helper(checkEquality);

But when the component renders I get an error in console as

Error: Assertion Failed: A helper named ‘checkEquality’ could not be found

What am I missing here?


Your helper has a dash in it but you are invoking it with camel case (you actually have it correct in one usage and incorrect in another within the same template).

Update your template to call ‘check-equality’ instead of ‘checkEquality’.


Just made the fix and was about to post it here :smile:

Thanks though :smiley:


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