如何在Haml中制作动态ID? [英] How do I make dynamic ids in Haml?

问题描述

#item

创建一个id为"item"的div

creates a div with id="item"

.box#item

使用class ="box"和id ="item"

creates a div with class="box" and id="item"

.box#="item "+x

创建一个带有class ="box"和注释'#="item" + x"

creates a div with class="box" and a comment '#="item"+x'

.box#
  ="item"+x

抛出非法元素:类和ID必须具有值."

throws "Illegal element: classes and ids must have values."

如何将ID设置为变量?

How do I get set the id to a variable?

推荐答案

有两种方法:

长格式(将id定义为常规属性):

The long form way (define the id as if it were a regular attribute):

.box{:id => "item_#{x}"}

产生此结果(x是x.to_s求值的结果):

produces this (x is what ever x.to_s evaluates to):

<div class="box" id="item_x">

简写方式:

.box[x]

假设x是item的实例，

会产生以下内容:

produces the following assuming x is an instance of item:

<div class="box item" id="item_45">

有关更多信息，请参见 HAML参考.

See the HAML reference for more information.

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