gistfile1.rb

def pictures
  @picture = Picture.new(params[:picture])
  @picture.data_content_type = MIME::Types.type_for(params[:Filename]).to_s
  @picture.recipe_id = params[:recipe_id]
  
  respond_to do |format|
    if @picture.save
      flash[:notice] = "Saved the picture."
      format.html { redirect_to recipe_path(params[:recipe_id]) }
      format.js
    else
      format.html { redirect_to recipe_path(params[:recipe_id]) }
      format.js
    end
  end
end