将变量保存到文件并下载 [英] saving variable to file and downloading it

问题描述

我以前的问题有问题。没有人不能帮助我，所以我会尝试写这个时候我想要的更好：

I've got a problem with my previous question. Nobody can't help me so I'll try to write better this time what I want:

• 我有一个生成器＃显示视图，在这个视图中，我想要
  所有的东西，而不需要刷新页面，点击按钮等。


• 有一个变量（它是无处存储的 - 只是动态放在
  的网站）： @bigtable ，这实际上是一个字符串数组


• 我在这个视图中放置了一个按钮：<％= form_tag do％><％= submit_tag'保存'％><％end％> / code>


• 如果有人点击该按钮，我想弹出一个窗口，
  他可以设置要保存txt文件的位置（并设置文件名），
  填充所有 @bigtable 数组记录。

• I've got a generators#show view, and in this view I want to do everything without refreshing page after clicking a button etc.
• I've got a variable (it is nowhere stored - just dynamically put on the site): @bigtable, which is actually an array of strings
• I have a button placed in this view: <%= form_tag do %><%= submit_tag 'Save it' %><% end %>
• If someone will click on that button I want to pop up an window and he could set where he want to save a txt file (and set filename), filled with all @bigtable array records.

对于几天，我想我已经尝试了一切，但我不太明白如何解决它。有人可以在这里写下我应该写的模型和控制器中的哪些方法？和所有必需的路线？我真的很感激任何帮助。
我以前的线程（但请不要在那里发送或给出类似的答案）：传递参数后保存文件

For couple days I think I've tried everything but I don't really understand how to solve it. Could someone, please write here what methods in model and controller I should write? And all required routes? I'll really appreciate any help. My previous thread (but please do not send me there or give same answers like there): saving file after passing parameter

推荐答案

最后我找到了一个解决方案：

finally I've found a solution:

def savefile
    @generator = Generator.new(params[:generator])
    @bigtable = Rails.cache.read("pass")
    doc = "wyniki.csv"
    File.open(doc, "w"){ |f| f << @bigtable}
    send_file(doc, :type => 'text; charset=utf-8')
  end

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