X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/5cbd4038edb32b0304bd766e70fc680ea447b52b..67e77fd20e2b75e353cc26d3f3b79e7e789be49c:/app/models/way.rb

diff --git a/app/models/way.rb b/app/models/way.rb
index 2d427051c..6d49735f1 100644
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -1,5 +1,5 @@
 class Way < ActiveRecord::Base
-  require 'xml/libxml'
+  require "xml/libxml"
 
   include ConsistencyValidations
   include NotRedactable
@@ -19,13 +19,15 @@ class Way < ActiveRecord::Base
   has_many :containing_relation_members, :class_name => "RelationMember", :as => :member
   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
-  validates_uniqueness_of :id
-  validates_inclusion_of :visible, :in => [true, false]
-  validates_numericality_of :changeset_id, :version, :integer_only => true
-  validates_numericality_of :id, :on => :update, :integer_only => true
-  validates_associated :changeset
+  validates :id, :uniqueness => true, :presence => { :on => :update },
+                 :numericality => { :on => :update, :integer_only => true }
+  validates :version, :presence => true,
+                      :numericality => { :integer_only => true }
+  validates :changeset_id, :presence => true,
+                           :numericality => { :integer_only => true }
+  validates :timestamp, :presence => true
+  validates :changeset, :associated => true
+  validates :visible, :inclusion => [true, false]
 
   scope :visible, -> { where(:visible => true) }
   scope :invisible, -> { where(:visible => false) }
@@ -35,7 +37,7 @@ class Way < ActiveRecord::Base
     p = XML::Parser.string(xml)
     doc = p.parse
 
-    doc.find('//osm/way').each do |pt|
+    doc.find("//osm/way").each do |pt|
       return Way.from_xml_node(pt, create)
     end
     fail OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/way element.")
@@ -46,14 +48,14 @@ class Way < ActiveRecord::Base
   def self.from_xml_node(pt, create = false)
     way = Way.new
 
-    fail OSM::APIBadXMLError.new("way", pt, "Version is required when updating") unless create || !pt['version'].nil?
-    way.version = pt['version']
-    fail OSM::APIBadXMLError.new("way", pt, "Changeset id is missing") if pt['changeset'].nil?
-    way.changeset_id = pt['changeset']
+    fail OSM::APIBadXMLError.new("way", pt, "Version is required when updating") unless create || !pt["version"].nil?
+    way.version = pt["version"]
+    fail OSM::APIBadXMLError.new("way", pt, "Changeset id is missing") if pt["changeset"].nil?
+    way.changeset_id = pt["changeset"]
 
     unless create
-      fail OSM::APIBadXMLError.new("way", pt, "ID is required when updating") if pt['id'].nil?
-      way.id = pt['id'].to_i
+      fail 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.
       # We want to make sure that there is no id with zero anyway
       fail OSM::APIBadUserInput.new("ID of way cannot be zero when updating.") if way.id == 0
@@ -68,29 +70,19 @@ class Way < ActiveRecord::Base
     way.tags = {}
 
     # Add in any tags from the XML
-    pt.find('tag').each do |tag|
-      fail OSM::APIBadXMLError.new("way", pt, "tag is missing key") if tag['k'].nil?
-      fail OSM::APIBadXMLError.new("way", pt, "tag is missing value") if tag['v'].nil?
-      way.add_tag_keyval(tag['k'], tag['v'])
+    pt.find("tag").each do |tag|
+      fail OSM::APIBadXMLError.new("way", pt, "tag is missing key") if tag["k"].nil?
+      fail OSM::APIBadXMLError.new("way", pt, "tag is missing value") if tag["v"].nil?
+      way.add_tag_keyval(tag["k"], tag["v"])
     end
 
-    pt.find('nd').each do |nd|
-      way.add_nd_num(nd['ref'])
+    pt.find("nd").each do |nd|
+      way.add_nd_num(nd["ref"])
     end
 
     way
   end
 
-  # 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.find(id, :include => { :way_nodes => :node })
-    # If waytag had a multipart key that was real, you could do this:
-    # Way.find(id, :include => [:way_tags, {:way_nodes => :node}])
-  end
-
   # Find a way given it's ID, and in a single SQL call also grab its nodes and tags
   def to_xml
     doc = OSM::API.new.get_xml_doc
@@ -99,8 +91,8 @@ class Way < ActiveRecord::Base
   end
 
   def to_xml_node(visible_nodes = nil, changeset_cache = {}, user_display_name_cache = {})
-    el = XML::Node.new 'way'
-    el['id'] = id.to_s
+    el = XML::Node.new "way"
+    el["id"] = id.to_s
 
     add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
 
@@ -121,10 +113,10 @@ class Way < ActiveRecord::Base
     end
 
     ordered_nodes.each do |nd_id|
-      next unless nd_id && nd_id != '0'
+      next unless nd_id && nd_id != "0"
 
-      node_el = XML::Node.new 'nd'
-      node_el['ref'] = nd_id
+      node_el = XML::Node.new "nd"
+      node_el["ref"] = nd_id
       el << node_el
     end
 
@@ -207,7 +199,9 @@ class Way < ActiveRecord::Base
     new_nds = (nds - old_nodes).sort.uniq
 
     unless new_nds.empty?
-      db_nds = Node.where(:id => new_nds, :visible => true)
+      # NOTE: nodes are locked here to ensure they can't be deleted before
+      # the current transaction commits.
+      db_nds = Node.where(:id => new_nds, :visible => true).lock("for share")
 
       if db_nds.length < new_nds.length
         missing = new_nds - db_nds.collect(&:id)
@@ -240,11 +234,6 @@ class Way < ActiveRecord::Base
     end
   end
 
-  # Temporary method to match interface to nodes
-  def tags_as_hash
-    tags
-  end
-
   ##
   # if any referenced nodes are placeholder IDs (i.e: are negative) then
   # this calling this method will fix them using the map from placeholders