Fixed up delete methods on nodes, ways and relations to return the new version number and added some more tests.

app/controllers/node_controller.rb

@@ -78,21 +78,17 @@ class NodeController < ApplicationController
     end
   end
 
-  # Delete a node. Doesn't actually delete it, but retains its history in a wiki-like way.
-  # FIXME remove all the fricking SQL
+  # Delete a node. Doesn't actually delete it, but retains its history 
+  # in a wiki-like way. We therefore treat it like an update, so the delete
+  # method returns the new version number.
   def delete
     begin
       node = Node.find(params[:id])
       new_node = Node.from_xml(request.raw_post)
-      # FIXME we no longer care about the user, (or maybe we want to check
-      # that the user of the changeset is the same user as is making this
-      # little change?) we really care about the 
-      # changeset which must be open, and that the version that we have been
-      # given is the one that is currently stored in the database
       
       if new_node and new_node.id == node.id
-        node.delete_with_history(new_node, @user)
-        render :nothing => true
+        node.delete_with_history!(new_node, @user)
+        render :text => node.version.to_s, :content_type => "text/plain"
       else
         render :nothing => true, :status => :bad_request
       end

app/controllers/relation_controller.rb

@@ -67,8 +67,8 @@ class RelationController < ApplicationController
       relation = Relation.find(params[:id])
       new_relation = Relation.from_xml(request.raw_post)
       if new_relation and new_relation.id == relation.id
-        relation.delete_with_history(new_relation, @user)
-        render :nothing => true
+        relation.delete_with_history!(new_relation, @user)
+        render :text => relation.version.to_s, :content_type => "text/plain"
       else
         render :nothing => true, :status => :bad_request
       end

app/controllers/way_controller.rb

@@ -67,11 +67,10 @@ class WayController < ApplicationController
     begin
       way = Way.find(params[:id])
       new_way = Way.from_xml(request.raw_post)
-      if new_way and new_way.id == way.id
-        way.delete_with_history(new_way, @user)
 
-        # if we get here, all is fine, otherwise something will catch below.  
-        render :nothing => true
+      if new_way and new_way.id == way.id
+        way.delete_with_history!(new_way, @user)
+        render :text => way.version.to_s, :content_type => "text/plain"
       else
         render :nothing => true, :status => :bad_request
       end

app/models/node.rb

@@ -133,7 +133,7 @@ class Node < ActiveRecord::Base
   end
 
   # Should probably be renamed delete_from to come in line with update
-  def delete_with_history(new_node, user)
+  def delete_with_history!(new_node, user)
     if self.visible
       check_consistency(self, new_node, user)
       if WayNode.find(:first, :joins => "INNER JOIN current_ways ON current_ways.id = current_way_nodes.id", :conditions => [ "current_ways.visible = 1 AND current_way_nodes.node_id = ?", self.id ])

app/models/relation.rb

@@ -224,14 +224,12 @@ class Relation < ActiveRecord::Base
     end
   end
 
-  def delete_with_history(new_relation, user)
+  def delete_with_history!(new_relation, user)
     if self.visible
       check_consistency(self, new_relation, user)
-      if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = 1 AND member_type='relation' and member_id=?", self.id ])
+      if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = 1 AND member_type='relation' and member_id=? ", self.id ])
         raise OSM::APIPreconditionFailedError.new
       else
-        #self.user_id = user.id
-        # FIXME we need to deal with changeset here, which is probably already dealt with
         self.changeset_id = new_relation.changeset_id
         self.tags = []
         self.members = []
@@ -248,8 +246,6 @@ class Relation < ActiveRecord::Base
     if !new_relation.preconditions_ok?
       raise OSM::APIPreconditionFailedError.new
     end
-    # FIXME need to deal with changeset etc
-    #self.user_id = user.id
     self.changeset_id = new_relation.changeset_id
     self.tags = new_relation.tags
     self.members = new_relation.members

app/models/way.rb

@@ -245,19 +245,12 @@ class Way < ActiveRecord::Base
     return true
   end
 
-  def delete_with_history(new_way, user)
+  def delete_with_history!(new_way, user)
     check_consistency(self, new_way, user)
     if self.visible
-      # FIXME
-      # this should actually delete the relations,
-      # not just throw a PreconditionFailed if it's a member of a relation!!
-      # WHY?? The editor should decide whether the node is in the relation or not!
-
-      # FIXME: this should probably renamed to delete_with_history
       if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id",
-                             :conditions => [ "visible = 1 AND member_type='way' and member_id=?", self.id])
+                             :conditions => [ "visible = 1 AND member_type='way' and member_id=? ", self.id])
         raise OSM::APIPreconditionFailedError
-      # end FIXME
       else
         self.changeset_id = new_way.changeset_id
         self.tags = []