Jade模板——动态调用Mixin

Question

如何使用从json中传入的字符串动态加载mixin？下面的目标是让twoColumn.jade加载foo和bar mixin。

twoColumn.jade

mixin twoColumns(obj)
    .container-fluid
        .row(class=obj.class)
            for item in obj.items
                .col-xs-12.col-sm-3
                    //- Syntax for dynamically calling a mixin?
                    +item.template(item)

content.json

{
    "twoColumns": {
        "class": "foobar",
        "items": [
            {
                "template": "foo",
                "title": "Hello"     
            },
            {
                "template": "bar",
                "title": "World"     
            }
        ]            
    }
}

- Walter Roman

Answer 1

这是一项在Jade中不太明显的功能，因为它在文档中没有明确提到。你实际上可以使用插值语法(#{...})来动态选择mixin名称。

从Jade语言指南中得知：

interpolation? yup! both types of text can utilize interpolation, if we passed { name: 'tj', email: '[e-mail]' } to the compiled function we can do the following:

#user #{name} <#{email}>

outputs <div id="user">tj &lt;[e-mail]&gt;</div>

示例用法：

mixin foo(item)
  p Foo called

mixin bar(item)
  p Bar called

mixin twoColumns(obj)
  .container-fluid
    .row(class=obj.class)
      for item in obj.items
        .col-xs-12.col-sm-3
          +#{item.template}(item)

- user142162