Some improvements for the XML parsing, as there are somethings that we don't need...

[rails.git] / app / models / way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index d4bca19aacfb3af26b912be6979f2fe265eecaf4..92b69ed7dc15c472c6779c5d5673736cdc65c89d 100644 (file)
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -35,7 +35,7 @@ class Way < ActiveRecord::Base
         return Way.from_xml_node(pt, create)
       end
     rescue LibXML::XML::Error => ex
-      raise OSM::APIBadXMLError.new("relation", xml, ex.message)
+      raise OSM::APIBadXMLError.new("way", xml, ex.message)
     end
   end
 
@@ -47,8 +47,10 @@ class Way < ActiveRecord::Base
     end
     
     way.version = pt['version']
+    raise OSM::APIBadXMLError.new("node", pt, "Changeset is required") if pt['changeset'].nil?
     way.changeset_id = pt['changeset']
 
+    # This next section isn't required for the create, update, or delete of ways
     if create
       way.timestamp = Time.now
       way.visible = true
@@ -196,56 +198,6 @@ class Way < ActiveRecord::Base
     [ lons.min, lats.min, lons.max, lats.max ]
   end
 
-  def save_with_history!
-    t = Time.now
-
-    # update the bounding box, but don't save it as the controller knows the 
-    # lifetime of the change better. note that this has to be done both before 
-    # and after the save, so that nodes from both versions are included in the 
-    # bbox.
-    changeset.update_bbox!(bbox) unless nodes.empty?
-
-    Way.transaction do
-      self.version += 1
-      self.timestamp = t
-      self.save!
-
-      tags = self.tags
-      WayTag.delete_all(['id = ?', self.id])
-      tags.each do |k,v|
-        tag = WayTag.new
-        tag.k = k
-        tag.v = v
-        tag.id = self.id
-        tag.save!
-      end
-
-      nds = self.nds
-      WayNode.delete_all(['id = ?', self.id])
-      sequence = 1
-      nds.each do |n|
-        nd = WayNode.new
-        nd.id = [self.id, sequence]
-        nd.node_id = n
-        nd.save!
-        sequence += 1
-      end
-
-      old_way = OldWay.from_way(self)
-      old_way.timestamp = t
-      old_way.save_with_dependencies!
-
-      # update and commit the bounding box, now that way nodes 
-      # have been updated and we're in a transaction.
-      changeset.update_bbox!(bbox) unless nodes.empty?
-
-      # tell the changeset we updated one element only
-      changeset.add_changes! 1
-
-      changeset.save!
-    end
-  end
-
   def update_from(new_way, user)
     check_consistency(self, new_way, user)
     if !new_way.preconditions_ok?
@@ -294,13 +246,13 @@ class Way < ActiveRecord::Base
       check_consistency(self, new_way, user)
       if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id",
                              :conditions => [ "visible = ? AND member_type='way' and member_id=? ", true, self.id])
-        raise OSM::APIPreconditionFailedError
+        raise OSM::APIPreconditionFailedError.new("You need to make sure that this way is not a member of a relation.")
       else
         self.changeset_id = new_way.changeset_id
         self.tags = []
         self.nds = []
         self.visible = false
-        self.save_with_history!
+        save_with_history!
       end
     end
   end
@@ -309,12 +261,15 @@ class Way < ActiveRecord::Base
 
   # FIXME: merge the potlatch code to delete the relations
   #        and refactor to use delete_with_history!
+  # This really needs the ids and versions of the nodes/relations to be passed in too
+  # so that we can do the version checking before the delete
   def delete_with_relations_and_nodes_and_history(changeset_id)
     # delete the nodes not used by other ways
     self.unshared_node_ids.each do |node_id|
       n = Node.find(node_id)
       n.changeset_id = changeset_id
       n.visible = false
+      # FIXME next line is bad
       n.save_with_history!
     end
     
@@ -322,6 +277,7 @@ class Way < ActiveRecord::Base
     self.tags = []
     self.nds = []
     self.visible = false
+    # FIXME next line is bad
     self.save_with_history!
   end
 
@@ -358,4 +314,56 @@ class Way < ActiveRecord::Base
     end
   end
 
+  private
+  
+  def save_with_history!
+    t = Time.now
+
+    # update the bounding box, but don't save it as the controller knows the 
+    # lifetime of the change better. note that this has to be done both before 
+    # and after the save, so that nodes from both versions are included in the 
+    # bbox.
+    changeset.update_bbox!(bbox) unless nodes.empty?
+
+    Way.transaction do
+      self.version += 1
+      self.timestamp = t
+      self.save!
+
+      tags = self.tags
+      WayTag.delete_all(['id = ?', self.id])
+      tags.each do |k,v|
+        tag = WayTag.new
+        tag.k = k
+        tag.v = v
+        tag.id = self.id
+        tag.save!
+      end
+
+      nds = self.nds
+      WayNode.delete_all(['id = ?', self.id])
+      sequence = 1
+      nds.each do |n|
+        nd = WayNode.new
+        nd.id = [self.id, sequence]
+        nd.node_id = n
+        nd.save!
+        sequence += 1
+      end
+
+      old_way = OldWay.from_way(self)
+      old_way.timestamp = t
+      old_way.save_with_dependencies!
+
+      # update and commit the bounding box, now that way nodes 
+      # have been updated and we're in a transaction.
+      changeset.update_bbox!(bbox) unless nodes.empty?
+
+      # tell the changeset we updated one element only
+      changeset.add_changes! 1
+
+      changeset.save!
+    end
+  end
+
 end