Put back the units on all the zero values. Just because you can remove

[rails.git] / app / models / node.rb

diff --git a/app/models/node.rb b/app/models/node.rb
index 59aa4d36ffd01ef845896ca1199594253a6ef0fe..cec755f4765bfc35e9679256934512be093f74da 100644 (file)
--- a/app/models/node.rb
+++ b/app/models/node.rb
@@ -1,6 +1,8 @@
-class Node < GeoRecord
+class Node < ActiveRecord::Base

   require 'xml/libxml'
 
   require 'xml/libxml'
 

+  include GeoRecord
+

   set_table_name 'current_nodes'
   
   validates_presence_of :user_id, :timestamp
   set_table_name 'current_nodes'
   
   validates_presence_of :user_id, :timestamp


@@ -8,19 +10,51 @@ class Node < GeoRecord
   validates_numericality_of :latitude, :longitude
   validate :validate_position
 
   validates_numericality_of :latitude, :longitude
   validate :validate_position
 

-  has_many :old_nodes, :foreign_key => :id

   belongs_to :user
   belongs_to :user

- 
+
+  has_many :old_nodes, :foreign_key => :id
+
+  has_many :way_nodes
+  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
 
   def validate_position
     errors.add_to_base("Node is not in the world") unless in_world?
   end
 

-  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
 
   end
 

+  # Read in xml as text and return it's Node object representation

   def self.from_xml(xml, create=false)
     begin
       p = XML::Parser.new
   def self.from_xml(xml, create=false)
     begin
       p = XML::Parser.new


@@ -66,6 +100,7 @@ class Node < GeoRecord
     return node
   end
 
     return node
   end
 

+  # Save this node with the appropriate OldNode object to represent it's history.

   def save_with_history!
     Node.transaction do
       self.timestamp = Time.now
   def save_with_history!
     Node.transaction do
       self.timestamp = Time.now


@@ -75,12 +110,14 @@ class Node < GeoRecord
     end
   end
 
     end
   end
 

+  # Turn this Node in to a complete OSM XML object with <osm> wrapper

   def to_xml
     doc = OSM::API.new.get_xml_doc
     doc.root << to_xml_node()
     return doc
   end
 
   def to_xml
     doc = OSM::API.new.get_xml_doc
     doc.root << to_xml_node()
     return doc
   end
 

+  # Turn this Node in to an XML Node without the <osm> wrapper.

   def to_xml_node(user_display_name_cache = nil)
     el1 = XML::Node.new 'node'
     el1['id'] = self.id.to_s
   def to_xml_node(user_display_name_cache = nil)
     el1 = XML::Node.new 'node'
     el1['id'] = self.id.to_s


@@ -110,4 +147,13 @@ class Node < GeoRecord
     el1['timestamp'] = self.timestamp.xmlschema
     return el1
   end
     el1['timestamp'] = self.timestamp.xmlschema
     return el1
   end

+
+  # Return the node's tags as a Hash of keys and their values
+  def tags_as_hash
+    hash = {}
+    Tags.split(self.tags) do |k,v|
+      hash[k] = v
+    end
+    hash
+  end

 end
 end