[SalesForce] Does a Lightning Component know if it is in a Community or a standard Lightning Salesforce page

Title says it all. Does a Lightning Component know if it is in a Community or a standard Lightning Salesforce page?

I have a component that implements both the interface for Community as Standard Lightning:
<aura:component implements="forceCommunity:availableForAllPageTypes,flexipage:availableForAllPageTypes,force:hasRecordId" />

I want this component to behave differently depending on if it is on the Community or in standard Lightning. I can solve this by adding an attribute to the component and setting it through the property editor in the Lightning App Builder/Community Builder. But I'm wondering if I can solve this without this attribute.

Best Answer

I have made a blog about how to resolve this issue without having to add a design attribute. Link: http://kevansfdc.blogspot.com/2017/02/does-lightning-component-know-if-it-is.html

The solution I propose is to use a aura enabled method which return whether you are in a site context using the Site class that come natively with Salesforce. 

@AuraEnabled
public static boolean isCommunity(){
    Id siteId = Site.getSiteId(); // take a look at the apex class Site, you may find more useful method concerning site/community
    if (siteId != null) {
        return true;
    }
    return false;
}

And simply calling this method through an action in Lightning.

var action = component.get("c.isCommunity");
action.setCallback(this, function(response) {
var isCommunity = response.getReturnValue(); // do any operation needed here
});
$A.enqueueAction(action);

Hope this is useful as an answer. Cheers!

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