#
# Table name: ways
#
-# way_id :bigint(8) default(0), not null, primary key
+# way_id :bigint(8) not null, primary key
# changeset_id :bigint(8) not null
# timestamp :datetime not null
# version :bigint(8) not null, primary key
#
class OldWay < ApplicationRecord
- include ConsistencyValidations
- include ObjectMetadata
-
self.table_name = "ways"
- self.primary_keys = "way_id", "version"
- # note this needs to be included after the table name changes, or
+ # NOTE: this needs to be included after the table name changes, or
# the queries generated by Redactable will use the wrong table name.
include Redactable
belongs_to :changeset
- belongs_to :redaction
- belongs_to :current_way, :class_name => "Way", :foreign_key => "way_id"
+ belongs_to :redaction, :optional => true
+ belongs_to :current_way, :class_name => "Way", :foreign_key => "way_id", :inverse_of => :old_ways
- has_many :old_nodes, :class_name => "OldWayNode", :foreign_key => [:way_id, :version]
- has_many :old_tags, :class_name => "OldWayTag", :foreign_key => [:way_id, :version]
+ has_many :old_nodes, :class_name => "OldWayNode", :foreign_key => [:way_id, :version], :inverse_of => :old_way
+ has_many :old_tags, :class_name => "OldWayTag", :foreign_key => [:way_id, :version], :inverse_of => :old_way
- validates :changeset, :presence => true, :associated => true
+ validates :changeset, :associated => true
validates :timestamp, :presence => true
validates :visible, :inclusion => [true, false]
end
def tags
- @tags ||= Hash[old_tags.collect { |t| [t.k, t.v] }]
+ @tags ||= old_tags.to_h { |t| [t.k, t.v] }
end
- attr_writer :nds
-
- attr_writer :tags
-
- def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
- el = XML::Node.new "way"
- el["id"] = way_id.to_s
-
- add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
-
- old_nodes.each do |nd| # FIXME: need to make sure they come back in the right order
- node_el = XML::Node.new "nd"
- node_el["ref"] = nd.node_id.to_s
- el << node_el
- end
-
- add_tags_to_xml_node(el, old_tags)
-
- el
- end
-
- # Read full version of old way
- # For get_nodes_undelete, uses same nodes, even if they've moved since
- # For get_nodes_revert, allocates new ids
- # Currently returns Potlatch-style array
- # where [5] indicates whether latest version is usable as is (boolean)
- # (i.e. is it visible? are we actually reverting to an earlier version?)
-
- def get_nodes_undelete
- nds.collect do |n|
- node = Node.find(n)
- [node.lon, node.lat, n, node.version, node.tags_as_hash, node.visible]
- end
- end
-
- def get_nodes_revert(timestamp)
- points = []
- nds.each do |n|
- oldnode = OldNode.where("node_id = ? AND timestamp <= ?", n, timestamp).unredacted.order("timestamp DESC").first
- curnode = Node.find(n)
- id = n
- reuse = curnode.visible
- if oldnode.lat != curnode.lat || oldnode.lon != curnode.lon || oldnode.tags != curnode.tags
- # node has changed: if it's in other ways, give it a new id
- if curnode.ways - [way_id]
- id = -1
- reuse = false
- end
- end
- points << [oldnode.lon, oldnode.lat, id, curnode.version, oldnode.tags_as_hash, reuse]
- end
- points
- end
+ attr_writer :nds, :tags
# Temporary method to match interface to ways
def way_nodes
# check whether this element is the latest version - that is,
# has the same version as its "current" counterpart.
- def is_latest_version?
+ def latest_version?
current_way.version == version
end
end