changing the belongs_to and has_many items in the models to reflect the new foriegn...

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

diff --git a/app/models/node.rb b/app/models/node.rb
index 17521428ea260cc9bab6defcdcc9457958968f70..2efdb1bc93b58ce7f73c38bf67425c5123bb462d 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'
 
+  include GeoRecord
+
   set_table_name 'current_nodes'
   
   validates_presence_of :user_id, :timestamp
@@ -8,21 +10,26 @@ class Node < GeoRecord
   validates_numericality_of :latitude, :longitude
   validate :validate_position
 
+  belongs_to :changeset
+
   has_many :old_nodes, :foreign_key => :id
+
   has_many :way_nodes
+  has_many :ways, :through => :way_nodes
+
   has_many :node_tags, :foreign_key => :id
-  belongs_to :user
- 
+  
+  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 in_world?
-    return false if self.lat < -90 or self.lat > 90
-    return false if self.lon < -180 or self.lon > 180
-    return true
-  end
-
   #
   # Search for nodes matching tags within bounding_box
   #
@@ -55,40 +62,44 @@ class Node < GeoRecord
       p = XML::Parser.new
       p.string = xml
       doc = p.parse
-  
-      node = Node.new
 
       doc.find('//osm/node').each do |pt|
-        node.lat = pt['lat'].to_f
-        node.lon = pt['lon'].to_f
+        return Node.from_xml_node(pt, create)
+      end
+    rescue
+      return nil
+    end
+  end
 
-        return nil unless node.in_world?
+  def self.from_xml_node(pt, create=false)
+    node = Node.new
+    
+    node.version = pt['version']
+    node.lat = pt['lat'].to_f
+    node.lon = pt['lon'].to_f
 
-        unless create
-          if pt['id'] != '0'
-            node.id = pt['id'].to_i
-          end
-        end
+    return nil unless node.in_world?
 
-        node.visible = pt['visible'] and pt['visible'] == 'true'
+    unless create
+      if pt['id'] != '0'
+        node.id = pt['id'].to_i
+      end
+    end
 
-        if create
-          node.timestamp = Time.now
-        else
-          if pt['timestamp']
-            node.timestamp = Time.parse(pt['timestamp'])
-          end
-        end
+    node.visible = pt['visible'] and pt['visible'] == 'true'
 
-        tags = []
+    if create
+      node.timestamp = Time.now
+    else
+      if pt['timestamp']
+        node.timestamp = Time.parse(pt['timestamp'])
+      end
+    end
 
-        pt.find('tag').each do |tag|
-          node.add_tag_key_val(tag['k'],tag['v'])
-        end
+    tags = []
 
-      end
-    rescue
-      node = nil
+    pt.find('tag').each do |tag|
+      node.add_tag_key_val(tag['k'],tag['v'])
     end
 
     return node
@@ -105,11 +116,11 @@ class Node < GeoRecord
       tags = self.tags
       NodeTag.delete_all(['id = ?', self.id])
       tags.each do |k,v|
-       tag = NodeTag.new
-       tag.k = k 
-       tag.v = v 
-       tag.id = self.id
-       tag.save!
+        tag = NodeTag.new
+        tag.k = k 
+        tag.v = v 
+        tag.id = self.id
+        tag.save!
       end 
 
       # Create an OldNode
@@ -119,6 +130,35 @@ class Node < GeoRecord
     end
   end
 
+  def delete_with_history(user)
+    if self.visible
+      if WayNode.find(:first, :joins => "INNER JOIN current_ways ON current_ways.id = current_way_nodes.id", :conditions => [ "current_ways.visible = 1 AND current_way_nodes.node_id = ?", self.id ])
+       raise OSM::APIPreconditionFailedError.new
+      elsif RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = 1 AND member_type='node' and member_id=?", self.id])
+       raise OSM::APIPreconditionFailedError.new
+      else
+       self.user_id = user.id
+       self.visible = 0
+       save_with_history!
+      end
+    else
+      raise OSM::APIAlreadyDeletedError.new
+    end
+  end
+
+  def update_from(new_node, user)
+    if new_node.version != version
+      raise OSM::APIVersionMismatchError.new(new_node.version, version)
+    end
+
+    self.user_id = user.id
+    self.latitude = new_node.latitude 
+    self.longitude = new_node.longitude
+    self.tags = new_node.tags
+    self.visible = true
+    save_with_history!
+  end
+
   def to_xml
     doc = OSM::API.new.get_xml_doc
     doc.root << to_xml_node()
@@ -152,15 +192,12 @@ class Node < GeoRecord
 
     el1['visible'] = self.visible.to_s
     el1['timestamp'] = self.timestamp.xmlschema
+    el1['version'] = self.version.to_s
     return el1
   end
 
   def tags_as_hash
-    hash = {}
-    Tags.split(self.tags) do |k,v|
-      hash[k] = v
-    end
-    hash
+    return tags
   end
 
   def tags