new code logic for saving tree.. should work fine even if the node positions fail

app/assets/javascripts/lib/items/items.js.erb

@@ -321,13 +321,16 @@ $(function() {
     disableNesting: 'no-nest',
     update: function(event, ui) {
       var position = null;
-      // if($(ui.item).closest('ol').hasClass('item-groups')) {
-      //   position = $(ui.item).index() - 1;
-      // } else {
-      //   position = $(ui.item).index();
-      // };
+      if($(ui.item).closest('ol').hasClass('item-groups')) {
+        position = $(ui.item).index() - 1;
+      } else {
         position = $(ui.item).index();
-      $.post("<%= Rails.application.routes.url_helpers.update_position_admin_items_path %>", { id: ui.item.attr('id'), parent_id: (ui.item.parent().closest('li').attr('id') || ui.item.parent().closest('ol').attr('id')), position: position } );
+      };
+      var next_sibling = $(ui.item).next(),
+          next_sibling_id = null;
+        if( next_sibling )
+          next_sibling_id = next_sibling.attr("id");
+      $.post("<%= Rails.application.routes.url_helpers.update_position_admin_items_path %>", { id: ui.item.attr('id'), parent_id: (ui.item.parent().closest('li').attr('id') || ui.item.parent().closest('ol').attr('id')), position: position, "next_sibling_id" : next_sibling_id } );
     }
   });
   $(".sortable").delegate(".brand, .delete", clickEvent, function(e){

app/controllers/admin/items_controller.rb

@@ -24,7 +24,7 @@ class Admin::ItemsController < OrbitBackendController
 
   def update_position
     item = Item.find(params[:id])
-    item.shift_to(params[:parent_id], params[:position].to_i)
+    item.shift_to(params[:parent_id], params[:position].to_i, params[:next_sibling_id])
     render :nothing => true, status: 200
   end
 

app/models/item.rb

@@ -44,17 +44,23 @@ class Item
     a
   end
 
-  def shift_to(new_parent, position)
+  def find_by_parent_and_position(parent, position)
+    parent.children.detect{|child| child.position == position}
+  end
+
+
+   def shift_to(new_parent, position, next_sibling_id)
     position = position.to_i
     new_parent = Item.find(new_parent)
-    current_position_sibling = find_by_parent_and_position(new_parent, position)
-    if current_position_sibling
-      if self.position > current_position_sibling.position
-        self.move_above(current_position_sibling)
+    
+    if next_sibling_id
+      next_sibling = Item.find(next_sibling_id)
+      self.move_above(next_sibling)
     else
-        self.move_below(current_position_sibling)
+      self.move_to_bottom
     end
-    elsif self.parent != new_parent
+
+    if self.parent != new_parent
       self.parent = new_parent
       save
     end
@@ -86,10 +92,6 @@ class Item
     end
   end
 
-  def find_by_parent_and_position(parent, position)
-    parent.children.detect{|child| child.position == position}
-  end
-
   # Enable the validation for parent_id
   def validates_presence_of_parent_id?
     true

config/config.yml

@@ -1,6 +1,7 @@
 defaults: &defaults
   main_public_key: 'lib/main_public_key.pem'
-  store_ip: 'redmine.rulingcom.com:3001'
+  # store_ip: 'redmine.rulingcom.com:3001'
+  store_ip: 'tp.rulingcom.com:33335'
   orbit: 'Orbit'
   ruling_digital: 'RulingDigital'