How to get mime extension with file_column

Rails
1

Is there a way to get the MIME extension of a file_column field?

Here’s what I want to do (look for comment in before_save method):

class ProductFile < ActiveRecord::Base
belongs_to :product

file_column :file_name

def before_save
self.file_type = # something that returns the MIME type (e.g.
image/jpeg)
end

end

TIA

2

Nithin R. wrote:

self.file_type = # something that returns the MIME type (e.g. image/jpeg)

end

end

TIA

Nithin -> Did you find a solution for this? I too have a need to get the
mime type so that I can subsequently attach the file to an email. I’m
also having trouble setting store_dir to a custom setting which will
contain a variable reference. (I’m storing ToDo items against a Job - so
I want to use the job_id as a collection directory.)
TIA,
Eric.

3 
self.file_type = # something that returns the MIME type (e.g. image/jpeg)

end

end

def before_save
self.file_type &&= file_name_state.get_content_type rescue nil
end

Also:

(params[:my_raw_uploaded_file]).respond_to?(:content_type)
#=> true

-Kyle