How to access Record ID in custom lightning component in a Salesforce Community

Question

I tried following the question and answer to no success here: Lightning Component record ID when component in Lightning Page

How can I access the record ID from the URL in a custom lightning component? My end goal is to create a styled object details component showing some of the information (instead of the default details component).

Here is the code I have used so far:

<aura:component controller="CommunityPost_Controller" implements="forceCommunity:availableForAllPageTypes,force:hasRecordId,force:recordTab">
    <aura:attribute name="Community_News_Item__c" type="Community_News_Item__c" />
    <ui:outputText class="form-control" aura:id="recid" value="{!v.recordId}" />
</aura:component>

And I am loading this off of a data detail page on a salesforce community with the Napili template enabled.

Answer 1

I have finally figured it out. The force:hasRecordId is not available with Salesforce Communities. To access the record Id from a data detail page, you need to do two things:

1. Create an aura attribute to hold the variable, and ensure you don't include a default value here

2. Create a design attribute with a default value of {!recordId}

And that will allow the system to pass the record ID to the component when it loads on the page.