Force.com Friday - Intro to Visualforce
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Transcript of Force.com Friday - Intro to Visualforce
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Intro to VisualforceNovember 7, 2014
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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 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 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-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. Salesforce.com, inc. assumes no
obligation and does not intend to update these forward-looking statements.
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Shivanath Devinarayanan
Salesforce & Force.com MVP
@shivanathd
Speaker
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Post picture here
Follow Developer Force for the Latest News
@forcedotcom / #forcefriday
Developer Force – Force.com Community
Developer Force
Developer Force Group
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What can you do with Visualforce?
Framework to build custom user interfaces
Hosted natively on Force.com
Build streamlined UX
Create internal and public facing pages
Customize for different devices
Leverage other web technologies
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Model View Controller (MVC) Pattern
Standard and Custom Object
Visualforce
Standard Controllers and Apex
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MVC example
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What do standard components look like?
apex: or chatter: prefix
Attributes to define component
Merge field to define attribute (can also be a
string literal in some cases)
<apex:outputField value = “{!Restaurant__c.Address__c}” >
Reference field (using dot notation)
Data binding to objects and class variables
Component name (examples: tables, repeats, forms, etc)
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What do standard components look like?
Standard or custom objects
Defined at the page
level
Custom controller logic to extend
standard controllers
Inherit standard CRUD functionality.
If only using custom controllers, use controller=“controllerName”
<apex:page standardConroller =“Restaurant__c” extensions >“ext1, ext2”=
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MVC example
Visualforce tags
– 100+ standard components
– Custom components
Works with all standard web technologies including:
– CSS
– JavaScript
– HTML
– Flash
– Any other Web-Enabled Code
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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
Visualforce Controllers
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How can I customize Visualforce?
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The Developer Console
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NameTitle@Twitter
What else can you do with Visualforce?
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Rich user interfaces
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Complete web apps
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Mashups
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Complete web apps
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But…
Visualforce is NOT your first line of defense
Working knowledge of HTML, CSS, and JavaScript is essential
Visualforce has limits
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Limits
Page Size: 15 MB
Viewstate Size 135 KB
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If nothing else, remember this…
Visualforce is powerful – use it judiciously
If you don’t know basic HTML, CSS, and JavaScript concepts, no amount of Visualforce
magic will help you
Pay attention to performance at all times
If you don’t know… ASK
http://developer.force.com | Boards | Visualforce | #askforce
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If nothing else, remember this…
Developer.force.com
Bit.ly/IntroVF-pkg
Bit.ly/visualforce-workbook
Advanced Visualforce Webinar
“7 Habits of Highly Efficient Visualforce Pages” “Building the New AppExchange Using Responsive Design”
DF Recorded Sessions
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Q & A
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Survey
Your feedback is crucial to the successof our webinar programs. Thank you!
http://bit.ly/forcefriday