-# The node model represents a current existing node, that is, the latest version. Use OldNode for historical nodes.
-
-class Node < GeoRecord
+class Node < ActiveRecord::Base
require 'xml/libxml'
+ include GeoRecord
+
set_table_name 'current_nodes'
validates_presence_of :user_id, :timestamp
validates_numericality_of :latitude, :longitude
validate :validate_position
+ belongs_to :user
+
has_many :old_nodes, :foreign_key => :id
+
has_many :way_nodes
- belongs_to :user
-
+ has_many :ways, :through => :way_nodes
+
+ has_many :old_way_nodes
+ has_many :ways_via_history, :class_name=> "Way", :through => :old_way_nodes, :source => :way
+
+ has_many :containing_relation_members, :class_name => "RelationMember", :as => :member
+ has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation, :extend => ObjectFinder
+
# Sanity check the latitude and longitude and add an error if it's broken
def validate_position
errors.add_to_base("Node is not in the world") unless in_world?
end
- # Is this node withing -90 > latitude > 90 and -180 > longitude > 180>
- # * returns true/false
- def in_world?
- return false if self.lat < -90 or self.lat > 90
- return false if self.lon < -180 or self.lon > 180
- return true
+ #
+ # Search for nodes matching tags within bounding_box
+ #
+ # Also adheres to limitations such as within max_number_of_nodes
+ #
+ def self.search(bounding_box, tags = {})
+ min_lon, min_lat, max_lon, max_lat = *bounding_box
+ # @fixme a bit of a hack to search for only visible nodes
+ # couldn't think of another to add to tags condition
+ #conditions_hash = tags.merge({ 'visible' => 1 })
+
+ # using named placeholders http://www.robbyonrails.com/articles/2005/10/21/using-named-placeholders-in-ruby
+ #keys = []
+ #values = {}
+
+ #conditions_hash.each do |key,value|
+ # keys << "#{key} = :#{key}"
+ # values[key.to_sym] = value
+ #end
+ #conditions = keys.join(' AND ')
+
+ find_by_area(min_lat, min_lon, max_lat, max_lon,
+ :conditions => 'visible = 1',
+ :limit => APP_CONFIG['max_number_of_nodes']+1)
end
# Read in xml as text and return it's Node object representation