How to Define a Variable in Play! Framework Templates?

How do I define a variable in a Play! Framework template?

@val myVar = "Hello, Play!"

In the Play! Framework, templates are written using Twirl, a Scala-based templating engine. Defining variables within these templates allows you to manage dynamic content efficiently. Here’s how you can do it:

@main("Welcome") {@val greeting = "Hello, World!"

<h1>@greeting</h1> }

Causes

• The template system does not directly support variable definition without proper syntax.
• Understanding Twirl syntax is essential to utilize its capabilities fully.

Solutions

• Use the `@val` directive to define a variable at the beginning of your template.
• Utilize the `@` symbol to embed Scala code within your Twirl template.

Mistake: Defining a variable without the `@val` directive.

Solution: Always use `@val` to declare a variable to ensure it is recognized within the template.

Mistake: Attempting to use a variable outside of its defined scope.

Solution: Ensure variables are defined within the same scope or pass them as parameters to functions.