Rails, Prawn - PDF 显示在浏览器中等等 [英] Rails, Prawn - PDF show up in browser & etc

问题描述

我正在尝试理解 Prawn pdf gem.

I'm trying to understand the Prawn pdf gem.

我能够让它生成一个pdf.gemfile 中的每个 gem 都包括:

I was able to make it generate a pdf. Every gem in the gemfile included:

gem 'mysql', '~> 2.8.1'
gem 'prawn', '~> 0.12.0'
gem 'pdf-reader', '~> 0.10.0'
gem 'Ascii85', '~> 1.0.1'

在 config/application.rb 中:

In the config/application.rb:

config.autoload_paths << "#{Rails.root}/app/reports"

然后在控制器中:

 require 'prawn'

 def index
  pdf = Prawn::Document.new
  pdf.text "Hello World"
  pdf.render_file "x.pdf"
 end

比我调用索引函数.在我的应用程序的根目录中创建了一个名为 x.pdf 的 PDF.在 gemfile、rakefile 和 config.ru 中.

Than I call the index function. A PDF named x.pdf is created in the root of my application. Amongst the gemfile, rakefile and config.ru.

问题:

1. 如何强制 prawn 在 app/report(或任何其他选定的)文件夹中生成文件?
2. 如何在浏览器窗口中执行生成文件而不保存的操作?
3. 如何使其保存并显示在浏览器窗口中?

推荐答案

如何强制大虾在 app/report(或任何其他选定的)文件夹中生成文件?

How can I force prawn to generate the file in the app/report (or any other selected) folder?

def index
  pdf = Prawn::Document.new
  pdf.text "Hello World"
  pdf.render_file File.join(Rails.root, "app/report", "x.pdf")
end

如何在浏览器窗口中执行生成文件而不保存的操作?

How can I make the action to generate the file in the browser window and don't save it?

def index
  pdf = Prawn::Document.new
  pdf.text "Hello World"
  send_data pdf.render, :filename => "x.pdf", :type => "application/pdf"
end

如何让它保存并显示在浏览器窗口中?

How can I make it to save and show up in the browser window?

def index
  pdf = Prawn::Document.new
  pdf.text "Hello World"
  filename = File.join(Rails.root, "app/report", "x.pdf")
  pdf.render_file filename
  send_file filename, :filename => "x.pdf", :type => "application/pdf"
end

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