Get content_type of uploaded file when using file-column

Rails
1

I use the file-column plugin to handle a file upload module for a rails
app. Plain and simple:

class Media < ActiveRecord::Base
file_column :file

What I now would like is to get the contetn_type or the IOString object
of the original uploaded file. file_column converts this to a string
object containing the path to the file.

Any idears?

2

You can’t determine that from the extension of the uploaded file?
What exactly are you trying to do?

You can try to override the file= method

alias_method :old_file=, :file=
def file=(original_io)
#do something with original io
old_file=(original_io)
end

3

kyle wrote:

You can’t determine that from the extension of the uploaded file?
What exactly are you trying to do?

You can try to override the file= method

alias_method :old_file=, :file=
def file=(original_io)
#do something with original io
old_file=(original_io)
end

I can’t make this work. File-column trabnsform the IO object to a String
object (the files location) This happens before I can get my hands on
the IOString object.

I could moove this to the controller but that feels like the wrong place
for this.

4

On 11/30/05, Mattias B. [email protected] wrote:

old_file=(original_io)
end

I can’t make this work. File-column trabnsform the IO object to a String
object (the files location) This happens before I can get my hands on
the IOString object.

I could moove this to the controller but that feels like the wrong place
for this.

I feel the same but now I couldn’t get the mime type from the model
declaration (ideally in a before_create hook). Then I wrote in some
controller:
def save
media = Media.new(params[:media])

…

media.content_type = params[:media][:file].content_type.strip
media.save
end