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Lightning web components episode 2- work with salesforce data

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Lightning Web Components give any JavaScript developer a modern, web standards-based path to building apps and experiences on the Lightning Platform.
In the second episode of our five part webinar series on Lightning Web Components, we will show you how to access data from the Salesforce org, get record data, create records and handle errors using Lightning Web Components. In this webinar you’ll learn all about Lightning Data Service, reactive wire service and Lightning App Builder.

Publicado en: Tecnología
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Lightning web components episode 2- work with salesforce data

  1. 1. Lightning Web Components Episode 2 – Work with Salesforce Data March 01, 2019 | 11:00 a.m. IST Satya Sekhar Sr. Developer Evangelist Salesforce Shashank Srivatsavaya Developer Relations, Senior Manager Salesforce
  2. 2. Forward-Looking Statement 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.
  3. 3. Go Social! Salesforce Developers Salesforce Developers Salesforce Developers The video will be posted to YouTube & the webinar recap page (same URL as registration). This webinar is being recorded! @salesforcedevs
  4. 4. Have Questions? ● Don’t wait until the end to ask your question! ● Technical support will answer questions starting now. ● Respect Q&A etiquette ● Please don’t repeat questions. The support team is working their way down the queue. ● Stick around for live Q&A at the end ● Speakers will tackle more questions at the end, time-allowing ● Head to Developer Forums ● More questions? Visit developer.salesforce.com/forums
  5. 5. Episode 1 recap • Lightning Web Components - Introduction • Sample Gallery • Component Library and Playground • Base Lightning Components • Developer Tooling – Salesforce CLI and VS Code
  6. 6. Agenda ● Work with Data ● Base Lightning Components which use Lightning Data Service ● Wire service with Lightning Data Service and UI API ● Wire service with Apex Methods ● Imperative Apex Calls ● Configuring for App Builder
  7. 7. How does Lightning Data Service Work? Browser Server Lightning Web Components Ligtning Data Service User Interface API sObjects Lightning Data Service • Caches results on the client • Invalidates cache entry when data and meta data changes • Optimizes server calls UI API • Public Salesforce API to build UI • Gives data and metadata in a single response • UI responses respect CRUD, FLS and Sharing settings
  8. 8. Base Lightning Components Lightning Record Form • Supports edit, view, and read-only modes Benefits • Metadata aware • Does not require Apex code • Provide Form Layout • Field labels are displayed based on org’s defaults • Built on Lightning Data Service and UI API • Can access model statically • Can also access model dynamically Lightning Record View Form • Displays a read only form Lightning Record Edit Form • Displays an editable form
  9. 9. Choose your form
  10. 10. Introducing Wire Service
  11. 11. Wire Service Wire Adapter lightning/ui*Api Module Wire Adapter JS APIs {property} <template> </template> Lightning Web Component Wire Adapter HTML JS property Lightning Data Service
  12. 12. Get data with Wire Service import { adapterId } from 'adapterModule’; @wire(adapterId, adapterConfig) propertyOrFunction; import { LightningElement, api, wire } from 'lwc’; import { getRecord } from 'lightning/uiRecordApi’; export default class Record extends LightningElement { @api recordId; @wire(getRecord, { recordId: '$recordId', fields: ['Account.Name'] }) record; } Syntax Usage <template> {record} </template> HTML
  13. 13. Demo Work with Single Record
  14. 14. Call Apex Methods from Lightning Web Components Import Apex Methods Call Function Functions in Javascript Wire Service Call Imperatively Wire apex method to a property Wire apex method to a function Annotate Apex method with @AuraEnabled(cacheable=true)
  15. 15. Call Apex method using wire service import apexMethod from '@salesforce/apex/Namespace.Classname.apexMethod’; @wire(apexMethod, { apexMethodParams }) propertyOrFunction; import { LightningElement, track, wire } from 'lwc’; import findContacts from '@salesforce/apex/ContactController.findContacts'; export default class ApexWireMethodToProperty extends LightningElement { @track searchKey = ’’; @wire(findContacts, { searchKey: '$searchKey' }) contacts; } Syntax Usage
  16. 16. Imperative methods import { LightningElement, track } from 'lwc’; import getContactList from '@salesforce/apex/ContactController.getContactList’; export default class ApexImperativeMethod extends LightningElement { @track contacts; @track error; handleLoad() { getContactList() } } .then(result => { this.contacts = result; }) .catch(error => { this.error = error; }); Javascript Promise
  17. 17. Demo Work with multiple records
  18. 18. Configure for Lightning App Builder • Make your component usable in Lightning App Builder • Types of Lightning Pages • Configure component properties • Set the supported sObjects
  19. 19. Demo Component composition with App Builder
  20. 20. Lightning Web Components – Episode 3 ● Component Composition ● Interoperability and Co-existence with Aura ● Events/Intercomponent communication ● Lifecycle hooks ● Pub sub communication Component communication and Aura interoperability
  21. 21. Lightning Web Components – Episode 4 ● Static resources and custom/3rd party javascript ● External API ● Security: Locker ● Testing with Jest Security and Testing
  22. 22. Lightning Web Components – Episode 5 ● Implement for user scenarios ● Live coding testing and debugging ● Aura Migration Strategies and Implementation ● Best Practices Lightning Web Components - Episode 5: Live-coding with Lightning Web Components
  23. 23. Get Hands On with a Trailmix! sforce.co/lwcModern Javascript Developement
  24. 24. Q & A Try Trailhead: trailhead.salesforce.com Join the conversation: @salesforcedevs Join Trailblazer Community Group: bit.ly/webinarinapac
  25. 25. Survey Your feedback is crucial to the success of our webinar programs. Please fill out the survey at the end of the webinar. Thank you!

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