Visualforce Development Cookbook

Visualforce Development Cookbook - Second Edition

By : Keir Bowden

Buy this Book

Visualforce Development Cookbook - Second Edition

By: Keir Bowden

Buy this Book

Overview of this book

Visualforce is a framework that allows developers to build sophisticated, custom user interfaces that can be hosted natively on the Force.com platform. The Visualforce framework includes a tag-based markup language, similar to HTML that is used to write the Visualforce pages and a set of controllers that are used to write business logic to the Visualforce pages. Visualforce Development Cookbook provides solutions to a variety of challenges faced by Salesforce developers and demonstrates how easy it is to build rich, interactive pages using Visualforce. Whether you are looking to make a minor addition to the standard page functionality or override it completely, this book will provide you with the help you require throughout. You will start by learning about the simple utilities and will build up to more advanced techniques for data visualization and to reuse functionality. You will learn how to perform various tasks such as creating multiple records from a single page, visualizing data as charts, using JavaScript to enhance client-side functionality, building a public website, and making data available to a mobile device. With an interesting chapter on tackling common issues faced while developing Visualforce pages, the book provides lots of practical examples to enhance and extend your Salesforce user interface.

Visualforce Development Cookbook - Second Edition

Credits

About the Author

About the Reviewer

www.PacktPub.com

Preface

Free Chapter

General Utilities

Introduction

Overriding standard buttons

Data-driven styling

Turning off an action poller

Visualforce in the sidebar

Passing parameters to action methods

Reacting to URL parameters

Passing parameters between Visualforce pages

Opening a pop-up window

Adding a launch page

Testing a custom controller

Testing a controller extension

Custom Components

Introduction

Passing attributes to components

Updating attributes in component controllers

Passing action methods to components

Data-driven decimal places

The custom iterator component

Setting a value into a controller property

Multiselecting related objects

Notifying the containing page controller

Capturing Data Using Forms

Introduction

Editing a record in Visualforce

Adding error messages to field inputs

Adding error messages to non-field inputs

Using field sets

Adding a custom lookup to a form

Adding a custom datepicker to a form

Retrieving fields when a lookup is populated

Breaking up forms with action regions

The Please wait spinner

Action chaining

Managing Records

Introduction

Styling fields as required

Styling table columns as required

Attaching an image to a record

Managing attachments

Maintaining custom settings

Refreshing record details from embedded Visualforce

Using wrapper classes

Changing options based on the user input

Changing page layout based on the user input

Form-based searching

Managing Multiple Records

Introduction

Editing a record and its parent

Managing a list of records

Converting a lead

Managing a hierarchy of records

Inline editing a record from a list

Creating a Visualforce report

Displaying report data in Visualforce

Loading records asynchronously

Visualforce Charts

Introduction

Creating a bar chart

Creating a line chart

Customizing a chart

Adding multiple series

Creating a stacked bar chart

Adding a third axis

Embedding a chart in a record view page

Multiple charts per page

Enhancing the Client with JavaScript

Introduction

Using action functions

Avoiding race conditions

The confirmation dialog

Pressing Enter to submit

The onload handler

Collapsible list elements

Trapping navigation away

Creating a record using JavaScript remoting

Force.com Sites

Introduction

Creating a site

Record and field access

Retrieving content from Salesforce

Web to lead form

Creating a website template

Adding a header menu to a template

Adding a sidebar to a template

Conditional rendering in templates

Visualforce in Salesforce1

Introduction

Navigating between pages

Lightning forms

Capturing the user's location

Saving an image when creating a record

Capturing a signature when creating a record

Displaying a location in a map

Scanning the QR code to access the record

Troubleshooting

Introduction

Avoiding validation errors with action regions

Surfacing errors

Multiple bindings to the same record

Reducing view state size 1 - the transient keyword

Reducing view state size 2 - HTML vs Visualforce components

Debugging Visualforce

Logging messages in a Visualforce page

Customer Reviews

5 star

4 star

3 star

2 star

1 star

Reducing view state size 2 - HTML vs Visualforce components

Visualforce components contribute to the internal element of the view state. A page with a large number of components, or with a repeating element that contains a number of components, may consume a significant amount of the view state.

In this recipe we will create two Visualforce pages:

The first will iterate a collection of opportunity records using an <apex:pageBlockTable /> repeater component with nested standard components for columns and input fields
The second will iterate a collection of opportunity records using a regular HTML <table> element

We will then use the View State Inspector to examine the overall size and contents of the view state for each page to see the impact that storing the records has.

Getting ready

This recipe requires that you have enabled the View State Inspector, as detailed in the Reducing view state size 1- the transient keyword recipe in this chapter.

How to do it...

First, create the Visualforce...

Visualforce Development Cookbook - Second Edition

By : Keir Bowden

Visualforce Development Cookbook - Second Edition

By: Keir Bowden

Overview of this book

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Current Title:

Visualforce Development Cookbook - Second Edition

Reducing view state size 2 - HTML vs Visualforce components

Getting ready

How to do it...