X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/9544ab12b8237b4e471f03df981a189c80216c63..34e3e51456774127d43408b7ab65c24f41373f62:/app/models/way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index f9db684b8..c105fa089 100644
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -1,23 +1,23 @@
 class Way < ActiveRecord::Base
   require 'xml/libxml'
-  
+
   include ConsistencyValidations
   include NotRedactable
   include ObjectMetadata
 
   self.table_name = "current_ways"
-  
+
   belongs_to :changeset
 
   has_many :old_ways, -> { order(:version) }
 
   has_many :way_nodes, -> { order(:sequence_id) }
-  has_many :nodes, -> { order("sequence_id") }, :through => :way_nodes
+  has_many :nodes, :through => :way_nodes
 
   has_many :way_tags
 
   has_many :containing_relation_members, :class_name => "RelationMember", :as => :member
-  has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation, :extend => ObjectFinder
+  has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation
 
   validates_presence_of :id, :on => :update
   validates_presence_of :changeset_id,:version,  :timestamp
@@ -28,7 +28,7 @@ class Way < ActiveRecord::Base
   validates_associated :changeset
 
   scope :visible, -> { where(:visible => true) }
-    scope :invisible, -> { where(:visible => false) }
+  scope :invisible, -> { where(:visible => false) }
 
   # Read in xml as text and return it's Way object representation
   def self.from_xml(xml, create=false)
@@ -56,13 +56,13 @@ class Way < ActiveRecord::Base
     unless create
       raise OSM::APIBadXMLError.new("way", pt, "ID is required when updating") if pt['id'].nil?
       way.id = pt['id'].to_i
-      # .to_i will return 0 if there is no number that can be parsed. 
+      # .to_i will return 0 if there is no number that can be parsed.
       # We want to make sure that there is no id with zero anyway
       raise OSM::APIBadUserInput.new("ID of way cannot be zero when updating.") if way.id == 0
     end
 
     # We don't care about the timestamp nor the visibility as these are either
-    # set explicitly or implicit in the action. The visibility is set to true, 
+    # set explicitly or implicit in the action. The visibility is set to true,
     # and manually set to false before the actual delete.
     way.visible = true
 
@@ -85,7 +85,7 @@ class Way < ActiveRecord::Base
 
   # Find a way given it's ID, and in a single SQL call also grab its nodes
   #
-  
+
   # You can't pull in all the tags too unless we put a sequence_id on the way_tags table and have a multipart key
   def self.find_eager(id)
     way = Way.find(id, :include => {:way_nodes => :node})
@@ -133,26 +133,14 @@ class Way < ActiveRecord::Base
     add_tags_to_xml_node(el, self.way_tags)
 
     return el
-  end 
+  end
 
   def nds
-    unless @nds
-      @nds = Array.new
-      self.way_nodes.each do |nd|
-        @nds += [nd.node_id]
-      end
-    end
-    @nds
+    @nds ||= self.way_nodes.collect { |n| n.node_id }
   end
 
   def tags
-    unless @tags
-      @tags = {}
-      self.way_tags.each do |tag|
-        @tags[tag.k] = tag.v
-      end
-    end
-    @tags
+    @tags ||= Hash[self.way_tags.collect { |t| [t.k, t.v] }]
   end
 
   def nds=(s)
@@ -194,7 +182,7 @@ class Way < ActiveRecord::Base
       unless new_way.preconditions_ok?(self.nds)
         raise OSM::APIPreconditionFailedError.new("Cannot update way #{self.id}: data is invalid.")
       end
-      
+
       self.changeset_id = new_way.changeset_id
       self.changeset = new_way.changeset
       self.tags = new_way.tags
@@ -240,8 +228,8 @@ class Way < ActiveRecord::Base
     unless self.visible
       raise OSM::APIAlreadyDeletedError.new("way", new_way.id)
     end
-    
-    # need to start the transaction here, so that the database can 
+
+    # need to start the transaction here, so that the database can
     # provide repeatable reads for the used-by checks. this means it
     # shouldn't be possible to get race conditions.
     Way.transaction do
@@ -267,8 +255,8 @@ class Way < ActiveRecord::Base
 
   ##
   # if any referenced nodes are placeholder IDs (i.e: are negative) then
-  # this calling this method will fix them using the map from placeholders 
-  # to IDs +id_map+. 
+  # this calling this method will fix them using the map from placeholders
+  # to IDs +id_map+.
   def fix_placeholders!(id_map, placeholder_id = nil)
     self.nds.map! do |node_id|
       if node_id < 0
@@ -282,12 +270,12 @@ class Way < ActiveRecord::Base
   end
 
   private
-  
+
   def save_with_history!
     t = Time.now.getutc
 
-    # update the bounding box, note that this has to be done both before 
-    # and after the save, so that nodes from both versions are included in the 
+    # update the bounding box, note that this has to be done both before
+    # and after the save, so that nodes from both versions are included in the
     # bbox. we use a copy of the changeset so that it isn't reloaded
     # later in the save.
     cs = self.changeset
@@ -327,7 +315,7 @@ class Way < ActiveRecord::Base
       # new set of nodes.
       self.reload
 
-      # update and commit the bounding box, now that way nodes 
+      # update and commit the bounding box, now that way nodes
       # have been updated and we're in a transaction.
       cs.update_bbox!(bbox) unless nodes.empty?