Book Image

Lift Application Development Cookbook

By : Gilberto Tadeu Garcia Jun
Book Image

Lift Application Development Cookbook

By: Gilberto Tadeu Garcia Jun

Overview of this book

Developing secure web applications is one of the most important tasks developers have to deal with. With Lift, it is easy to create solid and formidable web applications as it is the most secure web framework available today. The View-First approach and being able to handle things as purely data transformation, makes working with Lift an exciting task. "Lift Application Development Cookbook" teaches you how to build web applications using this amazing framework. The book moves gradually, starting with the basics (starting a new project, submitting a form, and so on) before covering more advanced topics such as building a REST API and integrating your application with other technologies and applications. "Lift Application Development Cookbook" takes you on a journey of creating secure web applications. Step-by-step instructions help you understand how things work and how various elements relate to each other. You'll learn different ways to process a form, build dynamic HTML pages, and create an API using REST. You'll also learn how to work with relational and NoSQL databases and how to integrate your application with other technologies as well as with third-part applications such as Gmail and Facebook. By the end of the book, you will be able to understand how Lift works and be able to build web applications using this amazing and exciting framework.
Table of Contents (15 chapters)
Lift Application Development Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Nesting snippets


Snippets are lazily evaluated, which means that the Inner snippet will not be invoked until the Outer snippet is evaluated. By using this neat feature, we can nest snippet invocations in our HTML templates, and thus gain a powerful tool to dynamically generate HTML with a fine-grained control. For example, you can use this feature to show different things to your users depending on whether they are logged in or not and on their authorization level. We'll learn how to do this in this recipe.

Getting ready

Create a new project and add the following designer-friendly HTML code into the index.html file to invoke the snippet and trigger all of the mechanisms to render snippets recursively:

<div data-lift="Outer.choose">
  <div class="inner-div"></div>
</div>

How to do it...

Nesting snippets can be done by following these steps:

  1. Create a file called Outer.scala in the snippet package with the following content:

    import net.liftweb.util.Helpers._
    import net.liftweb...