Mark CORS responses as uncacheable

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

diff --git a/app/models/old_way.rb b/app/models/old_way.rb
index c2af4f21ce45e2944146fecc370ded8b4d56a2e4..591389243df717698d462acece54942bb0ce7017 100644 (file)
--- a/app/models/old_way.rb
+++ b/app/models/old_way.rb
@@ -1,10 +1,16 @@
 class OldWay < ActiveRecord::Base
   include ConsistencyValidations
-  
-  set_table_name 'ways'
-  set_primary_keys :way_id, :version
+
+  self.table_name = "ways"
+  self.primary_keys = "way_id", "version"
+
+  # note this needs to be included after the table name changes, or
+  # the queries generated by Redactable will use the wrong table name.
+  include Redactable
 
   belongs_to :changeset
+  belongs_to :redaction
+  belongs_to :current_way, :class_name => "Way", :foreign_key => "way_id"
 
   has_many :old_nodes, :class_name => 'OldWayNode', :foreign_key => [:way_id, :version]
   has_many :old_tags, :class_name => 'OldWayTag', :foreign_key => [:way_id, :version]
@@ -86,30 +92,50 @@ class OldWay < ActiveRecord::Base
     @tags = t
   end
 
-  def to_xml_node
+  def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
     el1 = XML::Node.new 'way'
     el1['id'] = self.way_id.to_s
     el1['visible'] = self.visible.to_s
     el1['timestamp'] = self.timestamp.xmlschema
-    if self.changeset.user.data_public?
-      el1['user'] = self.changeset.user.display_name
-      el1['uid'] = self.changeset.user.id.to_s
-    end
     el1['version'] = self.version.to_s
-    el1['changeset'] = self.changeset.id.to_s
+    el1['changeset'] = self.changeset_id.to_s
+
+    if changeset_cache.key?(self.changeset_id)
+      # use the cache if available
+    else
+      changeset_cache[self.changeset_id] = self.changeset.user_id
+    end
+
+    user_id = changeset_cache[self.changeset_id]
+
+    if user_display_name_cache.key?(user_id)
+      # use the cache if available
+    elsif self.changeset.user.data_public?
+      user_display_name_cache[user_id] = self.changeset.user.display_name
+    else
+      user_display_name_cache[user_id] = nil
+    end
+
+    if not user_display_name_cache[user_id].nil?
+      el1['user'] = user_display_name_cache[user_id]
+      el1['uid'] = user_id.to_s
+    end
+
+    el1['redacted'] = self.redaction.id.to_s if self.redacted?
     
     self.old_nodes.each do |nd| # FIXME need to make sure they come back in the right order
       e = XML::Node.new 'nd'
       e['ref'] = nd.node_id.to_s
       el1 << e
     end
- 
+      
     self.old_tags.each do |tag|
       e = XML::Node.new 'tag'
       e['k'] = tag.k
       e['v'] = tag.v
       el1 << e
     end
+
     return el1
   end
 
@@ -132,12 +158,12 @@ class OldWay < ActiveRecord::Base
   def get_nodes_revert(timestamp)
     points=[]
     self.nds.each do |n|
-      oldnode = OldNode.where('node_id = ? AND timestamp <= ?', n, timestamp).order("timestamp DESC").first
+      oldnode = OldNode.where('node_id = ? AND timestamp <= ?', n, timestamp).unredacted.order("timestamp DESC").first
       curnode = Node.find(n)
       id = n; reuse = curnode.visible
       if oldnode.lat != curnode.lat or oldnode.lon != curnode.lon or oldnode.tags != curnode.tags then
         # node has changed: if it's in other ways, give it a new id
-        if curnode.ways-[self.node_id] then id=-1; reuse=false end
+        if curnode.ways-[self.way_id] then id=-1; reuse=false end
       end
       points << [oldnode.lon, oldnode.lat, id, curnode.version, oldnode.tags_as_hash, reuse]
     end
@@ -158,4 +184,10 @@ class OldWay < ActiveRecord::Base
   def containing_relation_members
     return []
   end
+
+  # check whether this element is the latest version - that is,
+  # has the same version as its "current" counterpart.
+  def is_latest_version?
+    current_way.version == self.version
+  end
 end