[英]Ruby array to js array in .js.erb file on rails
I'm trying to turn a ruby array into a js array in a js.erb file. 我正在尝试将ruby数组转换为js.erb文件中的js数组。 I've checked all questions on this in stack overflow but it isn't working for me. 我已经检查了所有关于堆栈溢出的问题,但是它对我不起作用。
Here is the function 这是功能
function c(c) {
js_array = <%= raw @keys.to_json %>;
b.selection.remove(), b.html.insert('js_array[0]');
}
It throws the error Uncaught TypeError: Cannot read property '0' of null
它引发错误Uncaught TypeError: Cannot read property '0' of null
Im still learning js so im not sure what is going wrong here 我还在学习js,所以我不确定这里出了什么问题
The ruby @keys array defiantly has data in it because I'm printing that on the same page. ruby @keys数组中绝对有数据,因为我正在同一页上打印数据。
And if i change the array to js_array = ['gwfe', 'efw', 'efwe'];
如果我将数组更改为js_array = ['gwfe', 'efw', 'efwe'];
it works fine. 它工作正常。 This makes me believe something is going wrong when trying to convert the ruby array into a js array. 这使我相信在尝试将ruby数组转换为js数组时出了问题。
I assume, you are gettings @keys data from db or local. 我想,你是从数据库或本地获取@keys数据。 Could you try gon gem to pass the values from ruby to js. 您可以尝试使用gon gem将值从ruby传递给js。 Here is the railscast tutorial for the same: http://railscasts.com/episodes/324-passing-data-to-javascript?view=asciicast 这是相同的Railscast教程: http ://railscasts.com/episodes/324-passing-data-to-javascript?view=asciicast
And see, if that works. 看看是否可行。
Let me know. 让我知道。
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