114 lines
3 KiB
Ruby
114 lines
3 KiB
Ruby
class OldRelation < ActiveRecord::Base
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include ConsistencyValidations
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include ObjectMetadata
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self.table_name = "relations"
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self.primary_keys = "relation_id", "version"
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# note this needs to be included after the table name changes, or
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# the queries generated by Redactable will use the wrong table name.
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include Redactable
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belongs_to :changeset
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belongs_to :redaction
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belongs_to :current_relation, :class_name => "Relation", :foreign_key => "relation_id"
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has_many :old_members, -> { order(:sequence_id) }, :class_name => 'OldRelationMember', :foreign_key => [:relation_id, :version]
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has_many :old_tags, :class_name => 'OldRelationTag', :foreign_key => [:relation_id, :version]
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validates_associated :changeset
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def self.from_relation(relation)
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old_relation = OldRelation.new
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old_relation.visible = relation.visible
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old_relation.changeset_id = relation.changeset_id
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old_relation.timestamp = relation.timestamp
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old_relation.relation_id = relation.id
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old_relation.version = relation.version
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old_relation.members = relation.members
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old_relation.tags = relation.tags
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old_relation
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end
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def save_with_dependencies!
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save!
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tags.each do |k, v|
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tag = OldRelationTag.new
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tag.k = k
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tag.v = v
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tag.relation_id = relation_id
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tag.version = version
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tag.save!
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end
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members.each_with_index do |m, i|
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member = OldRelationMember.new
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member.id = [relation_id, version, i]
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member.member_type = m[0].classify
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member.member_id = m[1]
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member.member_role = m[2]
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member.save!
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end
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end
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def members
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@members ||= old_members.collect do |member|
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[member.member_type, member.member_id, member.member_role]
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end
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end
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def tags
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@tags ||= Hash[old_tags.collect { |t| [t.k, t.v] }]
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end
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attr_writer :members
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attr_writer :tags
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def to_xml
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doc = OSM::API.new.get_xml_doc
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doc.root << to_xml_node
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doc
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end
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def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
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el = XML::Node.new 'relation'
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el['id'] = relation_id.to_s
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add_metadata_to_xml_node(el, self, changeset_cache, user_display_name_cache)
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old_members.each do |member|
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member_el = XML::Node.new 'member'
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member_el['type'] = member.member_type.to_s.downcase
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member_el['ref'] = member.member_id.to_s # "id" is considered uncool here as it should be unique in XML
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member_el['role'] = member.member_role.to_s
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el << member_el
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end
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add_tags_to_xml_node(el, old_tags)
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el
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end
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# Temporary method to match interface to nodes
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def tags_as_hash
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tags
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end
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# Temporary method to match interface to relations
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def relation_members
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old_members
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end
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# Pretend we're not in any relations
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def containing_relation_members
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[]
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end
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# check whether this element is the latest version - that is,
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# has the same version as its "current" counterpart.
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def is_latest_version?
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current_relation.version == version
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end
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end
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