在Marionette/下划线模板中将属性与奇怪的字符一起使用 [英] Use attributes with weird chars in Marionette / underscore template

问题描述

我有一个模型，其属性名称如@id，@type等.

I have a model with attributes names like @id, @type, etc.

如果我尝试在Marionette.ItemView模板(带有下划线)中使用<%= @id %>，我会得到

If I try to use <%= @id %> in a Marionette.ItemView template (with Underscore) I get

未捕获到的SyntaxError:意外令牌ILLEGAL

Uncaught SyntaxError: Unexpected token ILLEGAL

使用语法['@id']不会产生预期的结果.

Using the syntax ['@id'] does not produce the expected result.

我必须重写serializeData函数吗?

谢谢

推荐答案

下划线模板需要<%= ... %>内的JavaScript表达式，编译后的模板使用

Underscore templates require JavaScript expressions inside <%= ... %>, the compiled template uses with so you can usually reference object properties as though they were variables. Your problem is that @id is not a valid JavaScript expression.

是的，提供您自己的 serializeData 删除@可能是您最好的选择.另一种可能性是将variable选项与 _.template 一起使用:

So yes, providing your own serializeData to remove the @s is probably your best bet. Another possibility would be to use the variable option with _.template:

默认情况下，模板通过with语句将数据中的值放置在本地范围内.但是，您可以使用变量设置指定一个变量名.这样可以大大提高模板的渲染速度.

By default, template places the values from your data in the local scope via the with statement. However, you can specify a single variable name with the variable setting. This can significantly improve the speed at which a template is able to render.

_.template("Using 'with': <%= data.answer %>", {answer: 'no'}, {variable: 'data'});
=> "Using 'with': no"

然后您可以使用<%= data['@id'] %>之类的东西；问题在于，与仅使用自定义serializeData方法清理@相比，使这种方法与Marionette结合使用可能会做更多的工作.

Then you could use things like <%= data['@id'] %>; the problem is that getting this approach to work with Marionette might be more work than simply cleaning up the @s in a custom serializeData method.

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