Required attribute and init handler in lightning component

Question

I have the following in my component: Component's controller simply calls apex auraEnabled method (which is fetches one record of Camping_Item__c type) and sets v.item attribute.When I try to run an app with this component, I get an error: [NoErrorObjectAvailable] Aura.loadComponent(): Failed to initialize application. If I remove required="true" from aura:attribute all goes fine. Why is that? Is it possible to use the required="true" property with init handler?

Anna Ball · Accepted Answer

I am pretty sure that if you set required="true" then the app or component that declares your component needs to provide the item. For example if your component is called "Component" in namespace "c" then the parent app/component would need to have:

Now, if the parent's init method fills in that value, then you're fine because it won't even attempt to create the c:Component until the init method has finished.

Required attribute and init handler in lightning component

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