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

Capturing a signature when creating a record


With the advent of the HTML5 canvas API, it is now possible for a user to write their signature directly onto the screen of a mobile device, which can then be turned into an image and stored against a record in Salesforce.

In this recipe, we will create a Visualforce page for use in Salesforce1 that captures the details of a lead and their signature agreeing to receive marketing e-mails.

Getting ready

This recipe requires that you have already uploaded the Salesforce Lightning Design System version 2.0.2 as detailed in Chapter 8, Force.com Sites.

This recipe also makes use of the signature_pad JavaScript library created by Szymon Nowak. At the time of writing, the latest version of the signature_pad library is 1.5.3 - if you download a later version and use a different name from that detailed in the following steps, you will need to update the Visualforce pages to use the name that you have chosen.

Download signature_pad.min.js from https://github...