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 }) }
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 }) }
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
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
Relation.transaction do
# have to be a little bit clever here - to detect if any tags
# changed then we have to monitor their before and after state.
tags_changed = false
Relation.transaction do
# have to be a little bit clever here - to detect if any tags
# changed then we have to monitor their before and after state.
tags_changed = false
# members may be in a different order and i don't feel like implementing
# a longest common subsequence algorithm to optimise this.
members = self.members
# members may be in a different order and i don't feel like implementing
# a longest common subsequence algorithm to optimise this.
members = self.members
# materially change the rest of the relation.
any_relations =
changed_members.collect { |_id, type| type == "relation" }
# materially change the rest of the relation.
any_relations =
changed_members.collect { |_id, type| type == "relation" }
update_members = if tags_changed || any_relations
# add all non-relation bounding boxes to the changeset
update_members = if tags_changed || any_relations
# add all non-relation bounding boxes to the changeset