使用 PDFKit 的 Rails 3.1 资产管道
我正在使用带有 Rails 3.1 的 PDFkit。过去，我能够使用 render_to_string 函数并从该字符串创建 pdf。然后我添加样式表，如下所示。我的问题是我不知道如何从资产管道内访问它们。 （这就是我在 Rails 3.0 中所做的）
html_string = render_to_string(:template => "/faxes/show.html.erb", :layout => 'trade_request')
kit = PDFKit.new(html_string, :page_size => 'Letter')
kit.stylesheets << "#{Rails.root.to_s}/public/stylesheets/trade_request.css"
所以我的问题是如何通过 asset pipline 从控制器直接访问我的 css 文件？
我知道我可以使用带有 PDFkit 的机架中间件将 pdf 呈现到浏览器，但在这种情况下，我需要将 pdf 发送到第三方传真服务。
感谢您的帮助。
瑞安
I am using PDFkit with rails 3.1. In the past I was able to use the render_to_string function and create a pdf from that string. I then add the stylesheets as follows. My issue is that I have no idea how to access them from within the asset pipeline. (This is how I did it in rails 3.0)
html_string = render_to_string(:template => "/faxes/show.html.erb", :layout => 'trade_request')
kit = PDFKit.new(html_string, :page_size => 'Letter')
kit.stylesheets << "#{Rails.root.to_s}/public/stylesheets/trade_request.css"
So my question in how do i get direct access from my controller to my css file through the asset pipline?
I know I can use the Rack Middleware with PDFkit to render the pdf to the browser, but in this case i need to send the pdf off to a third party fax service.
Thanks for your help.
Ryan
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刚刚也遇到了这个问题，我没有使用资产管道就解决了这个问题，而是像以前在 /public 中一样直接访问文件。不知道使用这种方法可能有什么缺点。
我猜想 LESS 和 SCSS 文件不会像通过资产管道访问时那样得到处理。
Just ran into this issue as well, and I got past it without using the asset pipeline, but accessing the file directly as I would have previously in /public. Don't know what the possible cons are to using this approach.
I guess LESS and SCSS files won't be processed as they would have if accessed through the asset pipeline.
有点晚了，但迟到总比不到好，嗯。
我会这样做：
A little late, but better late than never, eh.
I'd do it like this:
在 Rails 3.1.1 中，样式表被写入 /public/assets 中，无论是否带有摘要指纹。
这意味着您应该能够仅通过更改代码中的路径来引用这些文件。
但有一个问题：如果 CSS 清单中未引用 PDF 工作表，则必须将其添加到预编译配置中：
config.assets.precompile += ['trade_request.css']
这告诉 sprockets 自行编译该文件。
作为（更好的）替代方案，请查看 asset_path 帮助程序是否在您的代码中工作。这将在开发和生产中引用正确的文件。
In Rails 3.1.1 stylesheets are written to /public/assets with and without the digest fingerprint.
This means that you should be able to reference these files just by changing the path in your code.
One gotcha though: if the PDF sheet is not referenced in a CSS manifest you'll have to add it to the precompile config:
config.assets.precompile += ['trade_request.css']
This tells sprockets to compile that file on its own.
As a (better) alternative, see if the asset_path helper works in your code. This will reference the correct file in dev and production.
我最终将 css 文件复制到我的公共目录中，并以与之前使用 Rails 3 相同的方式引用它。有关更多信息，请查看此问题： 从控制器访问 stylesheet_link_tag
I ended up copying the css file to my public directory and referring to it in the same way i did before with rails 3. For more information check out this question: Access stylesheet_link_tag from controller
我来到这里试图解决这个问题，但似乎没有一个答案可以为我解决问题。我发现这个堆栈溢出帖子的接受答案对我有用：
如何从 Rails 3.1 中的控制器引用已编译的资源？
我什至能够通过这种方法提供 .css.erb 文件。
I landed here trying to solve this problem and none of the answers seemed to solve the issue for me. I found the accepted answer of this stack overflow post worked for me:
How does one reference compiled assets from the controller in Rails 3.1?
I was even able to serve .css.erb files through this method.
尝试
= stylesheet_link_tag "application", 'data-turbolinks-track': 'reload'Try
= stylesheet_link_tag "application", 'data-turbolinks-track': 'reload'您应该能够使用以下方法访问样式表：
ActionController::Base.helpers.asset_path("trade_request.css")编写代码：
You should be able to access the stylesheet using this method:
ActionController::Base.helpers.asset_path("trade_request.css")Making your code: