Rails 3和PDFKit.如何指定页面大小?

问题描述

我一直在寻找文档，但是找不到答案.如何指定pdf文档的页面大小以及可用的页面大小是多少?我一直在寻找，但是找不到很好的文档.请指向我一个URL或让我知道如何将页面大小编码到我的PDF文档中.

I have been looking in the documentation but can't find the answer. How can I specify the page size of my pdf document and what are the available page sizes? I keep on looking and looking but I can't find good documentation. Please point me to a URL or let me know how can I code some page size into my PDF document.

哦，我不想在任何配置文件上执行此操作，因为我需要生成不同大小的PDf文档.

Oh and I don't want to do that on any config file because I need to generate PDf documents of different sizes.

不在配置文件中...

NOT in config file...

PDFKit.configure do |config|
config.wkhtmltopdf = `which wkhtmltopdf`.to_s.strip
config.default_options = {
  :encoding=>"UTF-8",
  :page_size=>"A4", #or "Letter" or whatever needed
  :margin_top=>"0.25in",
  :margin_right=>"1in",
  :margin_bottom=>"0.25in",
  :margin_left=>"1in",
  :disable_smart_shrinking=>false
  }
end

推荐答案

您可以在创建新PDF时设置页面大小，如下所示:

You can set the page size when creating a new PDF like this:

kit = PDFKit.new(source, :page_size => "Legal")

PDFKit使用WKHTMLTOPDF，后者又使用QPrinter.您可以在 QPrinter文档(有一堆)，但可以肯定地说，您想要的任何尺寸的纸张都可以使用.另外，如果找不到所需的尺寸，则可以设置自定义尺寸.

PDFKit uses WKHTMLTOPDF which in turn uses QPrinter. You can find the available sizes in the QPrinter documentation (there's a bunch), but its pretty safe to say that any size paper you want is available. Also, you can set a custom size if you can't find what you need.

注意:如果未在某处的配置中为page_size设置默认选项，并且在方法调用中未提供默认选项，则PDFKit将使用其内部默认值(字母).参见 lib/pdfkit/configuration.rb 的第10行

NB: If you don't set a default option for page_size in a config somewhere AND don't supply one in your method call, PDFKit will use its internal default (Letter). See line 10 of lib/pdfkit/configuration.rb

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