All Aboard the Lightning Components Action Service

All Aboard
The Lightning Components Action Service
 Peter Chittum
 Developer Evangelist
 @pchittum
 github.com/pchittum

Safe Harbor
Safe harbor statement under the Private Securities Litigation Reform Act of 1995:
This presentation may contain forward-looking statements that involve risks, uncertainties, and assumptions. If any such uncertainties materialize
or if any of the assumptions proves incorrect, the results of salesforce.com, inc. could differ materially from the results expressed or implied by
the forward-looking statements we make. All statements other than statements of historical fact could be deemed forward-looking, including any
projections of product or service availability, subscriber growth, earnings, revenues, or other financial items and any statements regarding
strategies or plans of management for future operations, statements of belief, any statements concerning new, planned, or upgraded services or
technology developments and customer contracts or use of our services.
The risks and uncertainties referred to above include – but are not limited to – risks associated with developing and delivering new functionality
for our service, new products and services, our new business model, our past operating losses, possible fluctuations in our operating results and
rate of growth, interruptions or delays in our Web hosting, breach of our security measures, the outcome of any litigation, risks associated with
completed and any possible mergers and acquisitions, the immature market in which we operate, our relatively limited operating history, our
ability to expand, retain, and motivate our employees and manage our growth, new releases of our service and successful customer deployment,
our limited history reselling non-salesforce.com products, and utilization and selling to larger enterprise customers. Further information on
potential factors that could affect the financial results of salesforce.com, inc. is included in our annual report on Form 10-K for the most recent
fiscal year and in our quarterly report on Form 10-Q for the most recent fiscal quarter. These documents and others containing important
disclosures are available on the SEC Filings section of the Investor Information section of our Web site.
Any unreleased services or features referenced in this or other presentations, press releases or public statements are not currently available and
may not be delivered on time or at all. Customers who purchase our services should make the purchase decisions based upon features that are
currently available. Salesforce.com, inc. assumes no obligation and does not intend to update these forward-looking statements.

Peter Chittum
Developer Evangelist
@pchittum
github.com/pchittum
Speaker

Agenda
▪  Brief Overview of Components
▪  Action Service Basics
▪  Beyond the Basics
▪  A Miscellany of Things

App Cloud and Lightning
Connect Process
Builder
App
Builder
Component
Framework

Introducing Lightning Components
 Reusable UI components for any device
Connect
Process
Builder
App
Builder
Component
Framework

Component Artifacts
Design Principles
•  Structured Bundle of
Resources
•  Client-side Rendered
•  Extensible, Reusable, Atomic,
Event-Driven
•  Apex as backend
•  First Class UI Citizen
APP or COMPONENT BUNDLE
Definition: markup
Style: css
Helper : js
Documentation
Controller: js
Renderer: js
Design Markup Icon: SVG

Component Client Side Rendering
JSON
component:{...}
<div>...</div>

Component-to-Component Communication
Event

Component-to-Server Communication
Action

Actions: Interact with the Server
•  Apex Method Surfaced to Lightning Components
•  @AuraEnabled annotation

Many Components Many Server Trips
XMLHttpRequest
XMLHttpRequest
XMLHttpRequest

Many Components Many Actions: Boxcarring
ActionService

Defer High Volume Actions
ActionService
•  Defer High-Volume Actions
•  Action.setCaboose()

Insert tracking
record
Caboose action
measures on
setInterval
Device
Orientation
Stop tracking
Update record
Clear handlers
Component
render
wobble__c measurement__c
Demo

Parent Child Display Optimization
1
2

Actions: Chained
callback
enqueueAction(child)

Useful Tools and Lessons
•  Javascript
•  Callbacks and isValid
•  Closures
•  Unsupported Events
•  Only on init
•  Component Lifecycle

Learn Javascript
James Governor, RedMonk

Javascript is Async
 console.log('this will go first’);
 setTimeout(function(){'this happens third'},1);
 console.log('this happens second');
 // output:
 'this will go first'
 'this happens second'
 'this happens third'
 1
 2
 3
 4
 5
 6
 7
 8

Check Component Validity: isValid()
 myhandler : function(component, event, helper){
  ...
  var action = component.get('c.myApexMethod');
  ...
  action.setCallback(this, function(serverResponse){
  ...
  component.set('v.myAttrib',serverResponse.getReturnValue());
  });
  $A.enqueueAction(action);
 1
 2
 3
 4
 5
 6
 7
 8
 9
 action.setCallback(this, (function(serverResponse){
  ...
if (component.isValid()) {
  component.set('v.myAttrib',serverResponse.getReturnValue());
  } else {
  ...exit gracefully
  }
 });
 1
 2
 3
 4
 5
 6
 7
 8
 9

Closures for Reusability
 //in MyComponentHelper.js
 callbackFactory : function(component){
  return function (serverResponse){
  component.set('v.myAttribute', serverResponse.getReturnValue());
 
  }
 }
 1
 2
 3
 4
 5
 6
 7
 doInit: function(component, event, helper){
  component.myCallbackFunction = helper.callbackFactory(component);
 });
 1
 2
 3
 //while setting up action do this...
 action.setCallback(this, helper.myCallbackFunction);
 1
 2

Clean Up After Yourself in Unrender
 unrender: function(component, helper){
 
  window.removeEventListener('deviceorientation',component.doOrientation);
 }
 1
 2
 3
 4
 5
 6
 7
 8
 9

Go Play and Break Things
 That what your Developer Edition org is for!
•  Action Service is how your Lightning Component talks to the App Cloud
•  Learn it!
•  It is still new, so learn the eﬀects of working with it
•  http://salesforce.stackexchange.com

Q & A
Peter Chittum
Developer Evangelist
@pchittum
github.com/pchittum
 A list of resources will be posted to the session Chatter feed.

All Aboard the Lightning Components Action Service

More Related Content

What's hot

What's hot (20)

Similar to All Aboard the Lightning Components Action Service

Similar to All Aboard the Lightning Components Action Service (20)

More from Peter Chittum

More from Peter Chittum (20)

Recently uploaded

Recently uploaded (20)

All Aboard the Lightning Components Action Service