呈现“< %% =”与HAML [英] Rendering "<%%=" with HAML

问题描述

我有一个Backbone.js应用程序托管在Sinatra中，并通过ERB脚本呈现。骨干模板使用下划线模板功能，因此变量在ERB中呈现为：

I have a Backbone.js application hosted in Sinatra and rendered via an ERB script. The backbone templates are using the underscore template functionality so the variables are rendered in ERB like so:

<div id="<%%= variable %>">

额外的％转义该变量的呈现，并使用单个％呈现

The extra "%" escapes the rendering of that variable and renders it with a single "%" which is what the underscore template library would pick up.

我在升级到HAML时尝试了以下操作：

I tried the following while upgrading to HAML:

#"<%= id %>"

这不起作用。如何使用HAML完成相同的任务？

Which did not work. How do I accomplish the same task with HAML?

推荐答案

首先，您不能使用＃ 快捷方式以创建具有这样的值的 id ，您将需要做很长的路要走：

First, you can’t use the # shortcut to create an id with a value like that, you’ll have to do it the long way:

%div{:id => "<%= id %>"}

默认情况下，Haml将转义属性，因此会产生类似这样的结果：

By default, Haml will escape the attributes, so this will produce something like:

<div id='&lt;%= id %&gt;'></div>

这可能不是您想要的。您可以通过设置 ：escape_attrs <来转义属性/ code>选项设置为false。然后将产生所需的输出：

which is probably not what you want. You can turn of escaping of attributes by setting the :escape_attrs option to false. This will then produce the desired output:

<div id='<%= id %>'></div>

请注意，此选项影响文档中的 all 属性。

Note that this option effects all attributes in the document.

另一种方法是在模板中使用一组不同的定界符。例如，您可以将 {{...}} 与此配合使用：

An alternative would be to use a different set of delimiters in your templates. For example you could use {{...}} with this:

_.templateSettings = {
  interpolate : /\{\{(.+?)\}\}/g
};

现在Haml不会转义属性值。

Now Haml won’t escape the attribute values.

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