Skip to main content

Lightning Events Via Visualforce

This post is again as per request from one of my friend .He wanted me to put together a simple demonstration of how to handle lightning events from visualforce and how to publish or fire lightning events from outside salesforce .Both of these cases are extremely common if you are building application using lightning for visualforce .

 If you have already started adopting Lightning component framework ,you probably know how important are Events .There are two types of events , Application events and Component Events .Please note that prerequisite for understanding this blog is understanding of events in context of lightning component framework .

 The below code snippets apply to only application events .

 Application events are handled by all components that are listening to the event. These events are essentially a traditional publish-subscribe model.

1. Firing Events from the Visualforce and Handling the Events in lightning components


To demonstrate this ,lets create a simple event file and fire the event from the visualforce inside the callback and handle the event back in the lightning component file

Below is the component set up for lightning framework

Lets put together the visualforce code needed for the experiment
Here are the exciting results









Now this opens a world of new opportunities to mash up already existing visualforce UI with lightning component framework.

 One sample project that i experimented is in my git repo which takes map component as a lightning component but receives pickers from the visualforce select option .


2.Firing events from the lightning component and handling the event inside visualforce


This is another interesting observation ,you can fire an event from the lightning component and handle the event inside visualforce .

Lets see the hello world code for this scenario
The visualforce code is as below
Fun part




I hope this opens up a whole world of new directions to design and build some excellent mashups with visualforce and lightning .

 Please reach out via my twitter @msrivastav13 or mail msrivastav13@gmail.com.

Popular posts from this blog

TLS 1.0 has been disabled For Sandbox - Salesforce

Salesforce has finally disabled TLS 1.0 in sandboxes .This is in preparation for disablement later in 2017 for PRODUCTION instances .

Now this would have not impacted your integrations in PRODUCTION org but if your integration is broken in your sandbox ,this means you have only few months to sort this and fix before this affects your integration for PROD live users .
Before we deep drive on how to possibly fix this and work with your external systems to figure solution ,lets first understand what is TLS and why did SFDC moved to 1.x and had to disable TLS 1.0
TLS 1.0 Explained























TLS 1.1 Improvements 
Added protection against cipher-block chaining (CBC) attacks. Support for IANA registration of parameters.

Clearly TLS 1.1 is more secure(Compared to 1.0) and protects salesforce resources against CBC attacks .
Identify if this change broke anything .The things that can be affected in your instances are as below Web requests to Salesforce URLs that require authenticationWeb requests to the login pag…
Read more

Opening Modal Using Lightning Component Framework of SFDC

One of my friend from India threw a challenge .The challenge was to open a modal by using latest and greatest lightning components framework and modals design from SLDS .For the love of community I thought of sharing the entire code base that I did .

So here we start ..

Business Use Case - Need a handy SalesLeader board component that can be used to display the Sales revenue generated by each sales rep for current year in the order of decreasing total revenue .On click of the tile ,we will show detail opportunity list aggregating the revenue .

The component can be dragged in lightning design experience or in App builder lightning Page .

Video Demonstration-



SalesLeaderBoard from Mohith Kumar Shrivastava on Vimeo.








Frameworks Used -
Lightning Design Systems (SLDS) for CSSLightning Component Framework for client side logicApex aura enabled class for backend logicApproach
The component hierarchy is very important to imagine or mindmap before we dig deeper- SalesLeaderMain
    -SalesLeaderBoard
    …
Read more

Writing Test Classes For Apex Rest Service

I came across a question in a developer community on how to write Unit Test Classes for the Rest API service for POST HTTP calls

Unit Test Classes for REST API following link is very useful and inspired by this jeff had an article on his blog on how to write the test method for same .

Here is the Jeff Blog Link Test Class for REST API(Good reference for GET Rest Services)


In one of my previous blog post i demonstrated how to use native parsing technique for Rest api for User Defined Type
I wrote the Test class for the same and this post is helpful for all those searching for how to write test classes for apex rest service annotated with POST Call
Here is the Rest Service Class for which i attempted the test class
@RestResource(urlMapping='/DemoUrl/*') global with sharing class MyRestResourcedemo { global class RequestWrapper{ public Account acct; public Contact[] cons; } global class ResponseWrapper { public String StatusCode; …
Read more