1 # == Schema Information
5 # way_id :bigint(8) not null, primary key
6 # changeset_id :bigint(8) not null
7 # timestamp :datetime not null
8 # version :bigint(8) not null, primary key
9 # visible :boolean default(TRUE), not null
10 # redaction_id :integer
14 # ways_changeset_id_idx (changeset_id)
15 # ways_timestamp_idx (timestamp)
19 # ways_changeset_id_fkey (changeset_id => changesets.id)
20 # ways_redaction_id_fkey (redaction_id => redactions.id)
23 class OldWay < ApplicationRecord
24 include ConsistencyValidations
26 self.table_name = "ways"
28 # NOTE: this needs to be included after the table name changes, or
29 # the queries generated by Redactable will use the wrong table name.
33 belongs_to :redaction, :optional => true
34 belongs_to :current_way, :class_name => "Way", :foreign_key => "way_id", :inverse_of => :old_ways
36 has_many :old_nodes, :class_name => "OldWayNode", :query_constraints => [:way_id, :version], :inverse_of => :old_way
37 has_many :old_tags, :class_name => "OldWayTag", :query_constraints => [:way_id, :version], :inverse_of => :old_way
39 validates :changeset, :associated => true
40 validates :timestamp, :presence => true
41 validates :visible, :inclusion => [true, false]
43 def self.from_way(way)
45 old_way.visible = way.visible
46 old_way.changeset_id = way.changeset_id
47 old_way.timestamp = way.timestamp
48 old_way.way_id = way.id
49 old_way.version = way.version
51 old_way.tags = way.tags
55 def save_with_dependencies!
70 nd.id = [way_id, version, sequence]
78 @nds ||= old_nodes.order(:sequence_id).collect(&:node_id)
82 @tags ||= old_tags.to_h { |t| [t.k, t.v] }
85 attr_writer :nds, :tags
87 # Temporary method to match interface to ways
92 # Pretend we're not in any relations
93 def containing_relation_members
97 # check whether this element is the latest version - that is,
98 # has the same version as its "current" counterpart.
100 current_way.version == version