Lightning Record Form - Base Components Lightning Data Services @wire property Imperative Call to Apex Apex Refresh Calling Apex methods

1. Letterkenny, Ireland
Developers Group
Lk_Sf_Devs LkTrailblazers
Welcome to our virtual learning series
Learn Lightning Web Components in 5 Days
Day 4 - Working with Salesforce Data
including LDS

3. Nishant Singh Panwar
Community Group Leader
Salesforce Developer and Consultant
● 6 Years of Salesforce Implementation Experience
● 8x Salesforce Certified - Application Architect
UDAIPUR
Nishant_SP

4. Actions
bit.ly/lwcquery

5. Sahil Batra (Director @ MTX Group Inc.)
Industry Experience
Having 9 year of experience in IT Industry and 6 years in Salesforce
ecosystem.Started my Salesforce career as Developer and have played
various roles like Technical Lead , Technical Architect and Corporate
Trainer.
Professional Highlights
● Manage Salesforce trainings and certifications.
● Work as Technical Architect / Principal Developer on Projects.
● Hold 5 Salesforce Certifications and 1 Google certification.
● Conducted Training in India, US , Australia and UK.
● Trained 500+ freshers and 300+ lateral folks in Salesforce.
● Trained 800+ students and 250+ faculty members.
Email : sahilbatraa@gmail.com
Twitter : sahilbatraa18

6. Topics covered in Session 3
● Event Introduction
● Create Custom Events
● Declarative Event Handling
● Attach event listener
Programmatically
● Event Propagation
● Communication b/w independent
components
● pubsub
● Export Javascript Code
Recordings available @ http://bit.ly/lksfvideos

7. Working With Salesforce Data
● Use base components built on lightning data service
● Use LDS wire adapter and functions.
● Use Apex

8. Lightning Data Service
● Build on User Interface API
● Support All Custom & Standard Object supported by User Interface API
● External Objects, Person Accounts and Custom Metadata Types are not
included.
● Respect CRUD Access, FLS and Security Setting.
● Components
○ lightning-record-edit-form
○ lightning-record-form
○ lightning-record-view-form

9. Lightning Data Service
● Uses wire adapters and functions in lightning/ui*Api
● Apex methods are imported via @salesforce/apex/methodName
● During record change, all component using @wire adapter receive new value if
○ LWC mutates the record.
○ LDS cache expire and @wire reads the record.

10. Lightning Data Service does lot of work
● Loads record data progressively ,
increase performance.
● Cache result on the client
● Invalidate cache entries when dependent
Salesforce data and metadata changes.
● Optimize server calls by bulkifying and
deduping requests.

11. Lightning Base Components
● lightning-record-edit-form → Display editable form
● lightning-record-view-form → Display a read only form
● lightning-record-form → Support edit,view and read only modes.

12. Load a Record
Demo 18 : LoadRecords

13. Edit a Record
Demo 19 : EditRecords

14. Create a Record
Demo 20 : CreateRecords
Demo 21 : CreateRecords

15. Calling Apex Methods
● Apex Calls
○ @wire
○ imperatively
● Import Apex Method
● To Call Apex Method
○ Wire a property
○ Wire a function
○ Call a method imperatively

16. Calling Apex using @wire
Demo 22 : WireApexCall

17. Calling Apex using imperative call
Demo 23 : ImperativeApexCall

18. Refreshapex Demo
Demo 24 : refreshApex

19. Post your Queries @ bit.ly/lwcquery
Trailmix on Trailhead for Practice
Search for
Lightning Web Components in 5 Days

20. Coming Up
● 28 May - Navigation Services, Aura with LWC interoperability & extra topics.
bit.ly/lwcday5
RSVP
LWC QUIZ
Win Swag