openstreetmap-website/app/models/old_way.rb

114 lines
2.9 KiB
Ruby

class OldWay < ActiveRecord::Base
set_table_name 'ways'
belongs_to :user
def self.from_way(way)
old_way = OldWay.new
old_way.visible = way.visible
old_way.user_id = way.user_id
old_way.timestamp = way.timestamp
old_way.id = way.id
old_way.nds = way.nds
old_way.tags = way.tags
return old_way
end
def save_with_dependencies!
# dont touch this unless you really have figured out why it's called
# (Rails doesn't deal well with the old ways table (called 'ways') because
# it doesn't have a unique key. It knows how to insert and auto_increment
# id and get it back but we have that and we want to get the 'version' back
# we could add another column but thats a lot of data. No, set_primary_key
# doesn't work either.
save!
clear_aggregation_cache
clear_association_cache
@attributes.update(OldWay.find(:first, :conditions => ['id = ? AND timestamp = ?', self.id, self.timestamp]).instance_variable_get('@attributes'))
# ok, you can touch from here on
self.tags.each do |k,v|
tag = OldWayTag.new
tag.k = k
tag.v = v
tag.id = self.id
tag.version = self.version
tag.save!
end
i = 1
self.nds.each do |n|
nd = OldWayNode.new
nd.id = self.id
nd.node_id = n
nd.sequence_id = i
nd.version = self.version
nd.save!
i += 1
end
end
def nds
unless @nds
@nds = Array.new
OldWayNode.find(:all, :conditions => ["id = ? AND version = ?", self.id, self.version], :order => "sequence_id").each do |nd|
@nds += [nd.node_id]
end
end
@nds
end
def tags
unless @tags
@tags = Hash.new
OldWayTag.find(:all, :conditions => ["id = ? AND version = ?", self.id, self.version]).each do |tag|
@tags[tag.k] = tag.v
end
end
@tags = Hash.new unless @tags
@tags
end
def nds=(s)
@nds = s
end
def tags=(t)
@tags = t
end
# has_many :way_nodes, :class_name => 'OldWayNode', :foreign_key => 'id'
# has_many :way_tags, :class_name => 'OldWayTag', :foreign_key => 'id'
def old_nodes
OldWayNode.find(:all, :conditions => ['id = ? AND version = ?', self.id, self.version])
end
def old_tags
OldWayTag.find(:all, :conditions => ['id = ? AND version = ?', self.id, self.version])
end
def to_xml_node
el1 = XML::Node.new 'way'
el1['id'] = self.id.to_s
el1['visible'] = self.visible.to_s
el1['timestamp'] = self.timestamp.xmlschema
el1['user'] = self.user.display_name if self.user.data_public?
self.old_nodes.each do |nd| # FIXME need to make sure they come back in the right order
e = XML::Node.new 'nd'
e['id'] = nd.node_id.to_s
el1 << e
end
self.old_tags.each do |tag|
e = XML::Node.new 'tag'
e['k'] = tag.k
e['v'] = tag.v
el1 << e
end
return el1
end
end