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Versions: 14
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Contents
module Rosemary
# OpenStreetMap Relation.
#
# To create a new Rosemary::Relation object:
# relation = Rosemary::Relation.new()
#
# To get a relation from the API:
# relation = Rosemary::Relation.find(17)
#
class Relation < Element
# Array of Member objects
attr_reader :members
# Create new Relation object.
#
# If +id+ is +nil+ a new unique negative ID will be allocated.
def initialize(attrs)
attrs.stringify_keys!
@members = extract_member(attrs['member'])
super(attrs)
end
def type
'relation'
end
# Return XML for this relation. This method uses the Builder library.
# The only parameter ist the builder object.
def to_xml(option = {})
xml = options[:builder] ||= Builder::XmlMarkup.new
xml.instruct! unless options[:skip_instruct]
xml.relation(attributes) do
members.each do |member|
member.to_xml(:builder => xml, :skip_instruct => true)
end
tags.to_xml(:builder => xml, :skip_instruct => true)
end
end
protected
def extract_member(member_array)
return [] unless member_array && member_array.size > 0
member_array.inject([]) do |memo, member|
class_to_instantize = "Rosemary::#{member['type'].classify}".constantize
memo << class_to_instantize.new(:id => member['ref'])
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems