X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/8dae890a7645fba17a44d84f78be03d993e22ccb..f249245135c8ed85562a89923da19564e644a32d:/app/models/relation.rb

diff --git a/app/models/relation.rb b/app/models/relation.rb
index 545336793..2fe60e5f7 100644
--- a/app/models/relation.rb
+++ b/app/models/relation.rb
@@ -1,4 +1,23 @@
-class Relation < ActiveRecord::Base
+# == Schema Information
+#
+# Table name: current_relations
+#
+#  id           :bigint(8)        not null, primary key
+#  changeset_id :bigint(8)        not null
+#  timestamp    :datetime         not null
+#  visible      :boolean          not null
+#  version      :bigint(8)        not null
+#
+# Indexes
+#
+#  current_relations_timestamp_idx  (timestamp)
+#
+# Foreign Keys
+#
+#  current_relations_changeset_id_fkey  (changeset_id => changesets.id)
+#
+
+class Relation < ApplicationRecord
   require "xml/libxml"
 
   include ConsistencyValidations
@@ -18,11 +37,11 @@ class Relation < ActiveRecord::Base
   has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation
 
   validates :id, :uniqueness => true, :presence => { :on => :update },
-                 :numericality => { :on => :update, :integer_only => true }
+                 :numericality => { :on => :update, :only_integer => true }
   validates :version, :presence => true,
-                      :numericality => { :integer_only => true }
+                      :numericality => { :only_integer => true }
   validates :changeset_id, :presence => true,
-                           :numericality => { :integer_only => true }
+                           :numericality => { :only_integer => true }
   validates :timestamp, :presence => true
   validates :changeset, :associated => true
   validates :visible, :inclusion => [true, false]
@@ -38,25 +57,30 @@ class Relation < ActiveRecord::Base
   def self.from_xml(xml, create = false)
     p = XML::Parser.string(xml, :options => XML::Parser::Options::NOERROR)
     doc = p.parse
+    pt = doc.find_first("//osm/relation")
 
-    doc.find("//osm/relation").each do |pt|
-      return Relation.from_xml_node(pt, create)
+    if pt
+      Relation.from_xml_node(pt, create)
+    else
+      raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/relation element.")
     end
-    raise OSM::APIBadXMLError.new("node", xml, "XML doesn't contain an osm/relation element.")
-  rescue LibXML::XML::Error, ArgumentError => ex
-    raise OSM::APIBadXMLError.new("relation", xml, ex.message)
+  rescue LibXML::XML::Error, ArgumentError => e
+    raise OSM::APIBadXMLError.new("relation", xml, e.message)
   end
 
   def self.from_xml_node(pt, create = false)
     relation = Relation.new
 
     raise OSM::APIBadXMLError.new("relation", pt, "Version is required when updating") unless create || !pt["version"].nil?
+
     relation.version = pt["version"]
     raise OSM::APIBadXMLError.new("relation", pt, "Changeset id is missing") if pt["changeset"].nil?
+
     relation.changeset_id = pt["changeset"]
 
     unless create
       raise OSM::APIBadXMLError.new("relation", pt, "ID is required when updating") if pt["id"].nil?
+
       relation.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
@@ -75,6 +99,7 @@ class Relation < ActiveRecord::Base
     pt.find("tag").each do |tag|
       raise OSM::APIBadXMLError.new("relation", pt, "tag is missing key") if tag["k"].nil?
       raise OSM::APIBadXMLError.new("relation", pt, "tag is missing value") if tag["v"].nil?
+
       relation.add_tag_keyval(tag["k"], tag["v"])
     end
 
@@ -87,6 +112,7 @@ class Relation < ActiveRecord::Base
     pt.find("member").each do |member|
       # member_type =
       raise OSM::APIBadXMLError.new("relation", pt, "The #{member['type']} is not allowed only, #{TYPES.inspect} allowed") unless TYPES.include? member["type"]
+
       # member_ref = member['ref']
       # member_role
       member["role"] ||= "" # Allow  the upload to not include this, in which case we default to an empty string.
@@ -97,43 +123,6 @@ class Relation < ActiveRecord::Base
     relation
   end
 
-  def to_xml
-    doc = OSM::API.new.get_xml_doc
-    doc.root << to_xml_node
-    doc
-  end
-
-  def to_xml_node(visible_members = nil, changeset_cache = {}, user_display_name_cache = {})
-    el = XML::Node.new "relation"
-    el["id"] = id.to_s
-
-    add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
-
-    relation_members.each do |member|
-      p = 0
-
-      if visible_members
-        # if there is a list of visible members then use that to weed out deleted segments
-        p = 1 if visible_members[member.member_type][member.member_id]
-      else
-        # otherwise, manually go to the db to check things
-        p = 1 if member.member.visible?
-      end
-
-      next unless p
-
-      member_el = XML::Node.new "member"
-      member_el["type"] = member.member_type.downcase
-      member_el["ref"] = member.member_id.to_s
-      member_el["role"] = member.member_role
-      el << member_el
-    end
-
-    add_tags_to_xml_node(el, relation_tags)
-
-    el
-  end
-
   # FIXME: is this really needed?
   def members
     @members ||= relation_members.map do |member|
@@ -145,9 +134,7 @@ class Relation < ActiveRecord::Base
     @tags ||= Hash[relation_tags.collect { |t| [t.k, t.v] }]
   end
 
-  attr_writer :members
-
-  attr_writer :tags
+  attr_writer :members, :tags
 
   def add_member(type, id, role)
     @members ||= []
@@ -175,9 +162,7 @@ class Relation < ActiveRecord::Base
   end
 
   def delete_with_history!(new_relation, user)
-    unless visible
-      raise OSM::APIAlreadyDeletedError.new("relation", new_relation.id)
-    end
+    raise OSM::APIAlreadyDeletedError.new("relation", new_relation.id) unless visible
 
     # need to start the transaction here, so that the database can
     # provide repeatable reads for the used-by checks. this means it
@@ -201,9 +186,8 @@ class Relation < ActiveRecord::Base
     Relation.transaction do
       lock!
       check_consistency(self, new_relation, user)
-      unless new_relation.preconditions_ok?(members)
-        raise OSM::APIPreconditionFailedError, "Cannot update relation #{id}: data or member data is invalid."
-      end
+      raise OSM::APIPreconditionFailedError, "Cannot update relation #{id}: data or member data is invalid." unless new_relation.preconditions_ok?(members)
+
       self.changeset_id = new_relation.changeset_id
       self.changeset = new_relation.changeset
       self.tags = new_relation.tags
@@ -215,9 +199,8 @@ class Relation < ActiveRecord::Base
 
   def create_with_history(user)
     check_create_consistency(self, user)
-    unless preconditions_ok?
-      raise OSM::APIPreconditionFailedError, "Cannot create relation: data or member data is invalid."
-    end
+    raise OSM::APIPreconditionFailedError, "Cannot create relation: data or member data is invalid." unless preconditions_ok?
+
     self.version = 0
     self.visible = true
     save_with_history!
@@ -252,9 +235,8 @@ class Relation < ActiveRecord::Base
       element = model.lock("for share").find_by(:id => m[1])
 
       # and check that it is OK to use.
-      unless element && element.visible? && element.preconditions_ok?
-        raise OSM::APIPreconditionFailedError, "Relation with id #{id} cannot be saved due to #{m[0]} with id #{m[1]}"
-      end
+      raise OSM::APIPreconditionFailedError, "Relation with id #{id} cannot be saved due to #{m[0]} with id #{m[1]}" unless element&.visible? && element&.preconditions_ok?
+
       hash[m[1]] = true
     end
 
@@ -268,9 +250,10 @@ class Relation < ActiveRecord::Base
   def fix_placeholders!(id_map, placeholder_id = nil)
     members.map! do |type, id, role|
       old_id = id.to_i
-      if old_id < 0
+      if old_id.negative?
         new_id = id_map[type.downcase.to_sym][old_id]
         raise OSM::APIBadUserInput, "Placeholder #{type} not found for reference #{old_id} in relation #{self.id.nil? ? placeholder_id : self.id}." if new_id.nil?
+
         [type, new_id, role]
       else
         [type, id, role]
@@ -373,10 +356,12 @@ class Relation < ActiveRecord::Base
       # reasonable on the assumption that adding or removing members doesn't
       # materially change the rest of the relation.
       any_relations =
-        changed_members.collect { |_id, type| type == "relation" }
+        changed_members.collect { |type, _id, _role| type == "Relation" }
                        .inject(false) { |acc, elem| acc || elem }
 
-      update_members = if tags_changed || any_relations
+      # if the relation is being deleted tags_changed will be true and members empty
+      # so we need to use changed_members to create a correct bounding box
+      update_members = if visible && (tags_changed || any_relations)
                          # add all non-relation bounding boxes to the changeset
                          # FIXME: check for tag changes along with element deletions and
                          # make sure that the deleted element's bounding box is hit.