Don't show older/newer buttons if all items fit on one page

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

diff --git a/app/models/relation.rb b/app/models/relation.rb
index 3f812d1b1a80c2c02e3a337524fb1cbce626650e..69e2acfd19ce3222f425c9734d983ede7b630101 100644 (file)
--- a/app/models/relation.rb
+++ b/app/models/relation.rb
@@ -22,15 +22,14 @@ class Relation < ApplicationRecord
 
   include ConsistencyValidations
   include NotRedactable
-  include ObjectMetadata
 
   self.table_name = "current_relations"
 
   belongs_to :changeset
 
-  has_many :old_relations, -> { order(:version) }
+  has_many :old_relations, -> { order(:version) }, :inverse_of => :current_relation
 
-  has_many :relation_members, -> { order(:sequence_id) }
+  has_many :relation_members, -> { order(:sequence_id) }, :inverse_of => :relation
   has_many :relation_tags
 
   has_many :containing_relation_members, :class_name => "RelationMember", :as => :member
@@ -40,8 +39,6 @@ class Relation < ApplicationRecord
                  :numericality => { :on => :update, :only_integer => true }
   validates :version, :presence => true,
                       :numericality => { :only_integer => true }
-  validates :changeset_id, :presence => true,
-                           :numericality => { :only_integer => true }
   validates :timestamp, :presence => true
   validates :changeset, :associated => true
   validates :visible, :inclusion => [true, false]
@@ -54,19 +51,21 @@ class Relation < ApplicationRecord
 
   TYPES = %w[node way relation].freeze
 
-  def self.from_xml(xml, create = false)
+  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 => 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 => e
     raise OSM::APIBadXMLError.new("relation", xml, e.message)
   end
 
-  def self.from_xml_node(pt, create = false)
+  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?
@@ -129,12 +128,10 @@ class Relation < ApplicationRecord
   end
 
   def tags
-    @tags ||= Hash[relation_tags.collect { |t| [t.k, t.v] }]
+    @tags ||= relation_tags.to_h { |t| [t.k, t.v] }
   end
 
-  attr_writer :members
-
-  attr_writer :tags
+  attr_writer :members, :tags
 
   def add_member(type, id, role)
     @members ||= []
@@ -169,7 +166,7 @@ class Relation < ApplicationRecord
     # shouldn't be possible to get race conditions.
     Relation.transaction do
       lock!
-      check_consistency(self, new_relation, user)
+      check_update_element_consistency(self, new_relation, user)
       # This will check to see if this relation is used by another relation
       rel = RelationMember.joins(:relation).find_by("visible = ? AND member_type = 'Relation' and member_id = ? ", true, id)
       raise OSM::APIPreconditionFailedError, "The relation #{new_relation.id} is used in relation #{rel.relation.id}." unless rel.nil?
@@ -185,7 +182,7 @@ class Relation < ApplicationRecord
   def update_from(new_relation, user)
     Relation.transaction do
       lock!
-      check_consistency(self, new_relation, user)
+      check_update_element_consistency(self, new_relation, user)
       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
@@ -198,7 +195,7 @@ class Relation < ApplicationRecord
   end
 
   def create_with_history(user)
-    check_create_consistency(self, user)
+    check_create_element_consistency(self, user)
     raise OSM::APIPreconditionFailedError, "Cannot create relation: data or member data is invalid." unless preconditions_ok?
 
     self.version = 0
@@ -207,6 +204,8 @@ class Relation < ApplicationRecord
   end
 
   def preconditions_ok?(good_members = [])
+    raise OSM::APITooManyRelationMembersError.new(id, members.length, Settings.max_number_of_relation_members) if members.length > Settings.max_number_of_relation_members
+
     # These are hastables that store an id in the index of all
     # the nodes/way/relations that have already been added.
     # If the member is valid and visible then we add it to the
@@ -235,7 +234,7 @@ class Relation < ApplicationRecord
       element = model.lock("for share").find_by(:id => m[1])
 
       # and check that it is OK to use.
-      raise OSM::APIPreconditionFailedError, "Relation with id #{id} cannot be saved due to #{m[0]} with id #{m[1]}" unless element&.visible? && element&.preconditions_ok?
+      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
@@ -264,7 +263,7 @@ class Relation < ApplicationRecord
   private
 
   def save_with_history!
-    t = Time.now.getutc
+    t = Time.now.utc
 
     self.version += 1
     self.timestamp = t