在Rails中上传文件 [英] Uploading files in Rails

问题描述

我想在我的网站上创建一个访问者可以上传文件的部分（pdf）。如何才能做到这一点？

此外，在pdf上传后，我需要一个指向该文件的链接。我没有使用无聊的文本链接，而是想要在PDF的第一页上画一个缩略图。有没有一个工具可以做到这一点？

解决方案

对于上传部分 acts href =http://techno-weenie.net/articles/acts_as_attachment =nofollow noreferrer> ActsAsAttachment 或者（如前所述） Paperclip 。

我不知道有什么插件可以创建/从PDF文件自动读取缩略图，但您可以调用 LibExtractpr 或 GhostScript 。

另外你可以看看 rGhost Gem （如文档所述）是一个文档创建和转换API，它本质上应该是一个Ruby的GhostScript包装器。

I want to make a section in my site where visitors can upload files (pdfs). How can this be done?

Also, after the pdf is uploaded, I need a link to that file. Rather than using a boring text link, I was thinking of having a thumbnail graphic of the first page of the pdf. Is there a tool out there that does this?

解决方案

For the Uploading part you might consider ActsAsAttachment or (as already stated) Paperclip.

I am not aware of any plugin for rails which is able to create/read thumbnails from PDF files automatically, but you could invoke LibExtractpr or GhostScript from your code.

Additionally you might take a look at the rGhost Gem which (as the documentation states) is a "a document creation and conversion API" which essentially should be a GhostScript Wrapper for Ruby.

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