[SalesForce] Lightning calling helper function returns not a function in init

I think this is something silly I'm missing, but please tell me what's wrong..

Controller.js

({
    doInit: function(component, helper, event) {
        helper.runSetup();
}
})

Helper.Js

({
  runSetup : function() {
    console.log('test');
  }
})

and I'm getting error as:

Action failed: c:IB_Preferences_UI_Sector$controller$doInit [helper.runSetup is not a function]]

every single time…

This is really frustrating, because I've done that before on other projects and it was fine. And suddenly it stopped..

Any ideas?

Best Answer

your Controller Should be

({
    doInit: function(component, event, helper) {
        helper.runSetup();
}
})

Actually you have interchanged the position of attributes passed.

In your controller attribute value should be in this order. But in your helper you can decide in whatever order you want to transfer the attributes.

Related Solutions

[SalesForce] Helper method error: says is “Not a function”

I think the problem is with your doInit function. The helper is passed to the function as the third argument:

doInit : function(component, event, helper){

[SalesForce] $A.get(“e.c:applicationEvent”) always returns undefined

I don't exactly have an answer for you... more a way of getting around your problems. Please let me know if I'm barking up the wrong tree...

First - why can't you add an onkeyup event in the markup?

Second - you don't need that timeout - you should be listening for the valueRender event, which ensures that everything is rendered for you.

So the affected markup would be:

<aura:handler name="init" value="{!this}" action="{!c.doInit}" />
<aura:handler name="render" value="{!this}" action="{!c.onRender}"/>

<div id="{!GlobalId + '_search'}" onkeyup="{!v.handleKeyup}">
  <lightning:input type="search" label="Search" name="search" aura:id="bar" placeholder="{!v.placeHolder}"/>
</div>

<h1>{!v.output}</h1>

Your handleKeyup method could be:

handleKeyup : function(component) {
  if ((e.keyCode || e.which) == 13) {
    component.set("v.input", '');
    helper.runSearch(component);
  } 
  else {
    helper.inputChange(component);
  }
},

This way you don't need change handlers, setTimeout or setCallback - it's all within the framework, so should work fine.

Best Answer

Related Solutions

[SalesForce] Helper method error: says is “Not a function”

[SalesForce] $A.get(“e.c:applicationEvent”) always returns undefined

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