玩！框架:在模板中定义一个变量? [英] Play! framework: define a variable in template?

问题描述

我正在向模板传递一个 Event 对象，我需要做的是检查 @event.getSeverity 值.如果值为正，我想将特定的

着色为绿色.如果值为负，我想将特定的

着色为红色.

我找不到定义变量的方法.是否可以?应该是我觉得.
无论如何，最简单的方法是什么?

谢谢

解决方案

如 Play 文档 您可以使用 @defining 助手.

@defining(if (event.getSeverity > 0) "green" else "red") { color =><div style="background-color: @color">foo</div>}

或者你可以使用可重用块

@severityColor(event: Event) = @{如果(event.getSeverity > 0)绿色"否则红色"}<div style="background-color: @severityColor(event)">foo</div>

I'm passing to a template an Event object and what I need to do is checking @event.getSeverity value. if the value is positive, I want to color a specific <div> in green. if the value is negative I want to color a specific <div> in red.

I couldn't find a way to define a variable. is it possible? it should be I think.
anyhow, what's the simplest way accomplishing this?

thanks

解决方案

As stated in the Play documentation you can use the @defining helper.

@defining(if (event.getSeverity > 0) "green" else "red") { color =>
    <div style="background-color: @color">foo</div>
}

Or you can use a reusable block

@severityColor(event: Event) = @{
    if (event.getSeverity > 0) "green" else "red"
}

<div style="background-color: @severityColor(event)">foo</div>

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