Rails - Mar 2006 - How to get mime extension with file_column

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

Nithin Reddy wrote:
> 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
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.

> 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
  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