验证Paperclip中的扩展-Ruby on Rails

问题描述

我发现Paperclip可以验证文件内容类型，即image/jpeg，但是我想专门验证扩展名.这是因为我正在使用一个晦涩的扩展名，该扩展名不会获得一致的内容类型.任何人都知道这是否可行，或者是执行此操作的好方法吗?

I've found that Paperclip can validate file content type, i.e. image/jpeg, but I want to specifically validate the extension. This is because I'm working with an obscure extension that won't get a consistent content type. Anyone know if this is doable, or a good way to do this?

推荐答案

猜猜，没有必要使用回形针的方法对其进行验证.您宁可使用类似以下内容的方法:

Guess, there is no need to validate it with paperclip's method. You can rather use something like:

has_attached_file :attachment
validates_format_of :attachment_file_name, :with => %r{\.(docx|doc|pdf)$}i

或者，使用回形针对其进行验证:

Alternatively, to validate it with paperclip:

validates_attachment_content_type :attachment, :content_type => 'text/plain'

^它会自动生成内容类型不匹配错误.

^ it will generate content-type mismatch errors automatically.

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