Passing record id from quick action to lightning component

Question

I have an action on Contact page which opens a lightning component. How do I pass the current Contact record id to the lightning component?

Answer 1

You can refer to the documentation here

basically, you have implement the force:hasRecordId attribute:

<aura:component controller="yourControllerifany"
implements="force:hasRecordId">

declare it in your component:

<aura:attribute name="recordId" type="Id" />

and in your client side controller, you should be able to fetch the record ID:

"recordId": component.get("v.recordId")

further documentation on using actions and recordid's can be found here

Answer 2

The best Possible workaround:

Component:

    <aura:component implements="flexipage:availableForRecordHome,flexipage:availableForAllPageTypes,force:hasRecordId,lightning:actionOverride,lightning:isUrlAddressable">
    <aura:attribute name="recordId" type="Id"/>
    <aura:handler name="init" value="{!this}" action="{!c.doInit}"/>
</aura:component>

Controller:

({
    doInit : function(component, event, helper) {
        var pageRef = component.get("v.pageReference");
        var state = pageRef.state; // state holds any query params
        var base64Context = state.inContextOfRef;
        /*
            *For some reason, the string starts with "1.", if somebody knows why,
            *this solution could be better generalized.
        */
         if (base64Context.startsWith("1\.")) {
            base64Context = base64Context.substring(2);
        }
        var addressableContext = JSON.parse(window.atob(base64Context));
        component.set("v.recordId", addressableContext.attributes.recordId);
})

It is because of the context is changing when you overridden the standard button.