ok, so fixed it myself.
working code:
--------------------------------------------------
template
--------------------------------------------------
<% @categories.each do |category| %>
<%= sortable_element 'notes-list_' + category.id.to_s ,
:constraint => false,
:url => {:action => "sort_notes", :id => category.id},
:complete => visual_effect(:highlight, 'notes-list_' +
category.id.to_s),
:containment => containment
%>
<% end %>
--------------------------------------------------
controller
--------------------------------------------------
def sort_notes
sortables = nil
@category_list = Category.find_all_by_user_id(current_user.id)
@category_list.each do |category|
if params['notes-list_' + category.id.to_s] then
sortables = params['notes-list_' + category.id.to_s]
end
end
sortables.each do |id|
currentitem = Note.find_by_id(id.to_i)
currentitem.position = sortables.index(id) + 1
currentitem.category_id = params[:id]
currentitem.save
end
render :nothing => true
end
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