X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/67dd9e4c9d487bdb5f38a09dc0c99def4989326e..3d4a137959573a9bada01e2622613c87b5056f92:/app/models/relation.rb

diff --git a/app/models/relation.rb b/app/models/relation.rb
index e5ea85d6d..581dce16f 100644
--- a/app/models/relation.rb
+++ b/app/models/relation.rb
@@ -8,9 +8,9 @@ class Relation < ActiveRecord::Base
 
   belongs_to :changeset
 
-  has_many :old_relations, :order => 'version'
+  has_many :old_relations, -> { order(:version) }
 
-  has_many :relation_members, :order => 'sequence_id'
+  has_many :relation_members, -> { order(:sequence_id) }
   has_many :relation_tags
 
   has_many :containing_relation_members, :class_name => "RelationMember", :as => :member
@@ -24,11 +24,11 @@ class Relation < ActiveRecord::Base
   validates_numericality_of :changeset_id, :version, :integer_only => true
   validates_associated :changeset
   
-  scope :visible, where(:visible => true)
-  scope :invisible, where(:visible => false)
-  scope :nodes, lambda { |*ids| joins(:relation_members).where(:current_relation_members => { :member_type => "Node", :member_id => ids }) }
-  scope :ways, lambda { |*ids| joins(:relation_members).where(:current_relation_members => { :member_type => "Way", :member_id => ids }) }
-  scope :relations, lambda { |*ids| joins(:relation_members).where(:current_relation_members => { :member_type => "Relation", :member_id => ids }) }
+  scope :visible, -> { where(:visible => true) }
+  scope :invisible, -> { where(:visible => false) }
+  scope :nodes, ->(*ids) { joins(:relation_members).where(:current_relation_members => { :member_type => "Node", :member_id => ids.flatten }) }
+  scope :ways, ->(*ids) { joins(:relation_members).where(:current_relation_members => { :member_type => "Way", :member_id => ids.flatten }) }
+  scope :relations, ->(*ids) { joins(:relation_members).where(:current_relation_members => { :member_type => "Relation", :member_id => ids.flatten }) }
 
   TYPES = ["node", "way", "relation"]
 
@@ -77,6 +77,12 @@ class Relation < ActiveRecord::Base
       relation.add_tag_keyval(tag['k'], tag['v'])
     end
 
+    # need to initialise the relation members array explicitly, as if this
+    # isn't done for a new relation then @members attribute will be nil, 
+    # and the members will be loaded from the database instead of being 
+    # empty, as intended.
+    relation.members = Array.new
+
     pt.find('member').each do |member|
       #member_type = 
       logger.debug "each member"
@@ -161,13 +167,9 @@ class Relation < ActiveRecord::Base
 
   # FIXME is this really needed?
   def members
-    unless @members
-      @members = Array.new
-      self.relation_members.each do |member|
-        @members += [[member.member_type,member.member_id,member.member_role]]
-      end
+    @members ||= self.relation_members.map do |member|
+      [member.member_type, member.member_id, member.member_role]
     end
-    @members
   end
 
   def tags
@@ -188,9 +190,9 @@ class Relation < ActiveRecord::Base
     @tags = t
   end
 
-  def add_member(type,id,role)
-    @members = Array.new unless @members
-    @members += [[type,id.to_i,role]]
+  def add_member(type, id, role)
+    @members ||= []
+    @members << [type, id.to_i, role]
   end
 
   def add_tag_keyval(k, v)