Rails .js.erb文件中的Ruby数组到js数组 [英] Ruby array to js array in .js.erb file on rails

问题描述

我正在尝试将ruby数组转换为js.erb文件中的js数组.我已经在堆栈溢出中检查了所有与此有关的问题，但它对我不起作用.

I'm trying to turn a ruby array into a js array in a js.erb file. I've checked all questions on this in stack overflow but it isn't working for me.

这是功能

  function c(c) {
   js_array = <%= raw @keys.to_json %>;
   b.selection.remove(), b.html.insert('js_array[0]');
    }

它引发错误未捕获的TypeError:无法读取null的属性"0"

我还在学习js，所以我不确定这里出了什么问题

Im still learning js so im not sure what is going wrong here

ruby​​ @keys数组中绝对有数据，因为我正在同一页上打印数据.

The ruby @keys array defiantly has data in it because I'm printing that on the same page.

如果我将数组更改为 js_array = ['gwfe'，'efw'，'efwe']; ，它就可以正常工作.这使我相信在尝试将ruby数组转换为js数组时出了问题.

And if i change the array to js_array = ['gwfe', 'efw', 'efwe']; it works fine. This makes me believe something is going wrong when trying to convert the ruby array into a js array.

推荐答案

我假设您正在从db或local获取@keys数据.您能否尝试 gon gem 将值从ruby传递给js.这是相同的Railscast教程: http://railscasts.com/episodes/324-passing-data-to-javascript?view = asciicast

I assume, you are gettings @keys data from db or local. Could you try gon gem to pass the values from ruby to js. Here is the railscast tutorial for the same: http://railscasts.com/episodes/324-passing-data-to-javascript?view=asciicast

看看，是否行得通.

让我知道.

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