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

Adding multiple series


In the previous recipes in this chapter, each chart contained a single series. Visualforce charts are not limited to this and can plot multiple sets of data, regardless of whether there is a relationship between the data sets.

In this recipe, we will create a Visualforce page containing a chart that plots two series against the month for the last year. The first is a bar series of the number of opportunities lost in the month, while the second is a line series of the number of opportunities won in the month. This allows a sales director to see if the won/lost ratio is improving over time.

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 MultiSeriesChartController.cls Apex class from the code download into the Apex Class area.

  4. Click...