在Rails 4 JS/ERB模板中嵌入JSON [英] Embedding JSON in a Rails 4 JS/ERB template

问题描述

我正在尝试将模型数据嵌入到RoR 4应用程序中的某些javascript中.像这样，控制器正在为模型数据生成JSON ...

I'm trying to embed model data in some javascript in my RoR 4 app. The controller is generating JSON for the model data like so...

def my_controller_method
  @person = Person.find(params[:id])
  @person_json = @person.to_json(only: [:name, :id])
end

并且我想在我的不引人注意的javascript中使用该json来使用JSON.parse()创建javascript对象...

and I'd like to use that json in my unobtrusive javascript to create javascript objects using JSON.parse()...

var personJSON = <%= j @person_json %>;
var person = JSON.parse(personJSON);

但是生成的javascript是...

but the javascript that's generated is...

var personJSON = {\"id\":1,\"name\":\"fred\"};
var person = JSON.parse(personJSON);

并且javascript静默失败.

and the javascript is failing silently.

在寻找解决方案时，我发现在SO 上运行，但是当我尝试使用html_safe方法时，我的rails应用程序崩溃，并说html_safe是未知方法.

When searching for a solution, I found this question asked on SO, but when I try to use the html_safe method, my rails app crashes saying html_safe is an unknown method.

提前感谢您的帮助！

推荐答案

这是怎么回事:

var personJSON = <%= @person_json.to_json.html_safe %>

或

var personJSON = <%= raw @person_json %>

我认为对于您的特定情况，最后一种选择更好.

I think the last option is better for your particular case.

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