Rails - Jul 2007 - How to display an image in my view from a BLOB column ?

I have a model  ''Picture'' with a blob column
''small''  and a string
column ''extension''

in my PictureController , I want to show it in the show view

my show action is quite simple

  def show
    @user = User.find(params[:user_id])
    @picture = @user.picture

    respond_to do |format|
      format.html # show.rhtml
      format.xml  { render :xml => @picture.to_xml }
    end
  end

what should I write in my show.rhtml view to display it ?

 I thought to add  in my show action
   send_data(@picture.small, :filename => @user.id.to_s
+''-small.''+
@picture.extension, :type => @picture.extension, :disposition =>
''inline'')

and in my view
<img src="<%=  @user.id.to_s +''-small.''+
@picture.extension  %>" />

but it seems to be wrong

thanks for your help

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