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Introduction to Visualforce


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Introduction to Visualforce

  1. 1. Introduction to VisualforceSamantha Ready,, Developer Evangelist@samantha_ready
  2. 2. 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, 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 intellectual property and other litigation, risks associated with 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 products, and utilization and selling to larger enterprise customers. Further information on potential factors that could affect the financial results of, inc. is included in our annual report on Form 10-Q for the most recent fiscal quarter ended July 31, 2012. This 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., inc. assumes no obligation and does not intend to update these forward- looking statements.
  3. 3. What can you do with Visualforce?  Framework to build custom user interfaces  Hosted natively on  Build streamlined UX  Extend  Customize for different devices  Leverage other web technologies
  4. 4. Visualforce and the MVC Pattern Standard Controllers & Extensions Markup & UI Components Objects / Data
  5. 5. MVC Example
  6. 6. Visualforce Markup Visualforce tags • 80+ standard components • Custom components Works with all standard web technologies including: • CSS • JavaScript • HTML • Flash • Any other Web-Enabled Code
  7. 7. What do standard components look like? Merge field to define attribute (can also be a apex: or string literal) chatter: Attributes to define prefix component<apex:outputField value = “{!Restaurant__c.Address__c” > Component name(examples: Reference field tables, repeats, (using dot notation) forms, etc) Data binding to objects and class variables
  8. 8. Visualforce Controllers  Provides access to data  Logic for handling UI interaction  Standard Controllers • Same functionality as standard pages – Save, delete, field access etc.  Custom Controllers • Written in Apex • Override standard behavior • Controller Extensions
  9. 9. What does that look like in code? Defined at the page level Supports both standard and custom objects<apex:page standardController = “Restaurant__c” extensions =“yelpExtension” > Use custom If only using custom controllers, controller logic use controller=“controllerName” to extend standard controllers
  10. 10. What does Visualforce look like? columndatatable command button outputfield markup
  11. 11. Custom Tags Create your own customComopnent prefix attributes Custom controller to define logic with Apex Bind with controller variables Encapsulate Markup
  12. 12. Mobile Components for Visualforce  Built on top of Visualforce  Produces cross platform HTML5  Highly customizable  Lightweight and fast  Community supported open source
  13. 13. Breakdown of a Simple Mobile PageSplitViewTemplate Detail Component List Component
  14. 14. Where else can Visualforce be used?  Email Templates  Dashboard Components  Define custom tabs  Custom sections on detail pages  Override standard behavior • Button clicks ex: perform save on detail page with custom logic
  15. 15. What else can you do withVisualforce?
  16. 16. Rich User Interfaces
  17. 17. Complete Web Apps
  18. 18. Mashups
  19. 19. If nothing else, remember this…  Can integrate with all standard web technologies  Visualforce developer guide is your best friend  You handle what you want to display, will handle who can see/edit it
  20. 20. Next Steps   Mini-workshopsRecorded Sessions  “7 Habits of Highly Efficient Visualforce Pages”  “Building the New AppExchange Using Responsive Design”  “Mobile Components for Visualforce”
  21. 21. Samantha ReadyDeveloper Evangelist, @samantha_ready