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

问题描述

我有一个问题，我的previous问题。没有人能不能帮助我，所以我会努力写出更好的这个时候，我想要什么：

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:

• 我有一个发电机＃秀视图，该视图我想要做的
  无需刷新页面一切单击按钮后等。


• 我有一个变量（它无处存储 - 只是动态穿上
  该网站）： @bigtable ，这实际上是一个字符串数组


• 我放在这个视图按钮：＆LT;％=的form_tag DO％GT;＆LT;％= submit_tag保存它％＆GT;＆LT;％结束％GT;


• 如果有人将那个按钮点击我要弹出一个窗口，
  他可以设在那里，他要保存一个txt文件（文件名设置）
  摆满了 @bigtable 阵列记录。

• 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.

有关几天我想我已经尝试了一切，但我真的不明白怎么解决它。可能有人，请写在这里，我应该写什么方法，模型和控制器？和所有必需的路线？我会真的AP preciate任何帮助。
我的previous线程（但请不要给我有还是给像有相同的答案）：通过参数后保存文件

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

终于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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