Fix the transactions, need to set anything that will be returned to nil outside the transaction, otherwise it won't be available after the end of the transaction, when it is returned.

app/controllers/amf_controller.rb

@@ -407,6 +407,8 @@ class AmfController < ApplicationController
     relid = relid.to_i
     visible = (visible.to_i != 0)
 
+    new_relation = nil
+    relation = nil
     Relation.transaction do
       # create a new relation, or find the existing one
       if relid > 0
@@ -495,6 +497,8 @@ class AmfController < ApplicationController
 
     # -- Get unique nodes
 
+    new_way = nil
+    way= nil
     Way.transaction do
       if originalway <= 0
         uniques = []
@@ -613,7 +617,8 @@ class AmfController < ApplicationController
 
     id = id.to_i
     visible = (visible.to_i == 1)
-
+    node = nil
+    new_node = nil
     Node.transaction do
       if id > 0 then
         node = Node.find(id)
@@ -641,13 +646,13 @@ class AmfController < ApplicationController
         # We're deleting the node
         node.delete_with_history!(new_node, user)
       end
-    end # transaction
+     end # transaction
 
     if id <= 0
       return [0, id, new_node.id, new_node.version]
     else
       return [0, id, node.id, node.version]
-    end
+    end 
   rescue OSM::APIChangesetAlreadyClosedError => ex
     return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}"]
   rescue OSM::APIVersionMismatchError => ex
@@ -694,9 +699,10 @@ class AmfController < ApplicationController
   def deleteway(usertoken, changeset_id, way_id, way_version, node_id_version) #:doc:
     user = getuser(usertoken)
     unless user then return -1,"You are not logged in, so the way could not be deleted." end
+      
+    way_id = way_id.to_i
     # Need a transaction so that if one item fails to delete, the whole delete fails.
     Way.transaction do
-      way_id = way_id.to_i
 
       # FIXME: would be good not to make two history entries when removing
       #		 two nodes from the same relation
@@ -719,7 +725,7 @@ class AmfController < ApplicationController
       delete_way = Way.new
       delete_way.version = way_version
       old_way.delete_with_history!(delete_way, user)
-    end
+    end # transaction
     [0, way_id]
   rescue OSM::APIChangesetAlreadyClosedError => ex
     return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}"]
@@ -746,6 +752,8 @@ class AmfController < ApplicationController
   
   # Remove a node or way from all relations
   # FIXME needs version, changeset, and user
+  # Fixme make sure this doesn't depend on anything and delete this, as potlatch 
+  # itself should remove the relations first
   def deleteitemrelations(objid, type, version) #:doc:
     relations = RelationMember.find(:all, 
 									:conditions => ['member_type = ? and member_id = ?', type, objid],