module Spree module Api class ClassificationsController < Spree::Api::BaseController def update authorize! :update, Product authorize! :update, Taxon classification = Spree::Classification.find_by( :product_id => params[:product_id], :taxon_id => params[:taxon_id] ) # Because position we get back is 0-indexed. # acts_as_list is 1-indexed. classification.insert_at(params[:position].to_i + 1) render :nothing => true end end end end