class Wco::GalleriesController

def update_many
  authorize! :update, Wco::Gallery
  galleries = Wco::Gallery.where( :id.in => params[:gallery_ids] )
  tags = Wco::Tag.where( :id.in => params[:tag_ids] )
  if params[:remove]
    galleries.each do |gallery|
      tags.each do |tag|
        gallery.tags.delete tag
      end
      gallery.save
    end
  else
    galleries.each do |gallery|
      gallery.tags.push tags
      gallery.save
    end
  end
  flash_notice 'Unknown outcome, no exception raised.'
  redirect_to request.referrer
end