Book Image

Visualforce Development Cookbook - Second Edition

By : Keir Bowden
Book Image

Visualforce Development Cookbook - Second Edition

By: Keir Bowden

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.
Table of Contents (16 chapters)
Visualforce Development Cookbook - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

Creating a stacked bar chart


Stacked bar charts allow the contributing parts of data to be compared to the whole. An example of this is displaying a bar that represents the total number of opportunities that are currently open, with sections of the bar displaying the count of opportunity records that are in each stage of the sales process.

In this recipe, we will create a Visualforce page containing a stacked bar chart where each bar displays the total opportunity value that closed that month, both won and lost, for the last 12 months. Each bar is divided into two segments: the lower segment shows the total value of opportunities lost in a month, while the upper segment shows the total value won.

Getting ready

This recipe makes use of a custom controller, so this must be present before the Visualforce page can be created.

How to do it...

  1. Navigate to the Apex Classes setup page by clicking on Your Name | Setup | Develop | Apex Classes.

  2. Click on the New button.

  3. Paste the contents of the StackedBarChartController...