Carrierwave how to get the file extension

Question

I\'m developing a Ruby on Rails application that requires file uploading/downloading. For the upload part i used the gem carrierwave since it\'s very easy to use and flexible. T

Answer 1

Determine file extension (I suppose a name for mounted uploader is 'file'):

file = my_model.file.url
extension = my_model.file.file.extension.downcase

Then prepare mime and disposition vars:

disposition = 'attachment'
mime = MIME::Types.type_for(file).first.content_type

if %w{jpg png jpg gif bmp}.include?(extension) or extension == "pdf"
  disposition = 'inline'
end

(add other extensions if you want).

And then send the file:

send_file file, :type => mime, :disposition => disposition