How to get all Child Objects List along with Relationship Names related to Parent Object using Apex

Sometimes it is required to get the list of all child relationship names in order to identify all related child objects to a parent object.

Dynamic apex helps to find out all related child object. Suppose you want to find all related object for Account then use below code snippet:

You can specify any object API name and run this code snippet in developer console.

You can also use workbench to find out list of child objects. Navigate to Info tab and select Standard & Custom Objects.

Hope this will help!!

Lightning:NotificationsLibrary : Easy Way to Display Toast or Notices in Lightning

In order to display the toast messages, we have to fire standard event "force:showToast". Now Salesforce recommend using lightning:notificationsLibrary for displaying messages in lightning via notices and toasts.

Toast helps in providing information about status on user action.
Notices helps in displaying the system related issue or update about any maintenance.

NotificationsLibrary makes very easy for developer to display notices and toast.

How to display Notices using lightning:notificationsLibrary

Below is sample code:

How to display Toast using lightning:notificationsLibrary

Below is sample code:

Hope this will help!!!

Handling Platform Events in Lightning Components

The lightning:empApi component gives methods for subscribing to a streaming channel and listening to event messages. It supports all streaming channels including channels for platform events, pushTopic events and Change Data Capture events. The lightning:empApi component uses a shared CometD connection.

Note:

• This component is available in 44.0 api version or later.
• This is available in Lightning Experience and only supported in desktop browsers.

To call the component's methods, add the lightning:empApi component inside your custom component and assign an aura:id attribute to it.

If you want to learn more about platform events then refer below blog:

Platform Events : Way to Deliver Custom Notifications within Salesforce or to external Applications

I have created a lightning component which will subscribe to platform event "Demo_Event__e" which we have created in our previous blog.

I have created an app page using lightning app builder named as "Platform Events App Page". and added this lightning component into it.

Code Snippet:

Below is snapshot of Lightning App page before platform event is fired.

Now fire platform event using workbench through REST API call

Platform event notification received in lightning component.

Hope this will help to understand platform events handling in lightning components. 

Looking forward for everyone's suggestions and comments!!!