Use a view to build the trace RSS feed and get rid of OSM::GeoRSS

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

diff --git a/app/models/old_node.rb b/app/models/old_node.rb
index d7a52c33617aaaedeaa4a0b1387555a8a701ac1c..ab25d4dbc588d48f5faa38f7553744add56c927c 100644 (file)
--- a/app/models/old_node.rb
+++ b/app/models/old_node.rb
@@ -1,21 +1,26 @@
 class OldNode < ActiveRecord::Base
-  set_table_name 'nodes'
-  
-  validates_presence_of :user_id, :timestamp
+  include GeoRecord
+  include ConsistencyValidations
+
+  self.table_name = "nodes"
+  self.primary_keys = "node_id", "version"
+
+  # note this needs to be included after the table name changes, or
+  # the queries generated by Redactable will use the wrong table name.
+  include Redactable
+
+  validates_presence_of :changeset_id, :timestamp
   validates_inclusion_of :visible, :in => [ true, false ]
   validates_numericality_of :latitude, :longitude
   validate :validate_position
+  validates_associated :changeset
 
-  belongs_to :user
+  belongs_to :changeset
+  belongs_to :redaction
+  belongs_to :current_node, :class_name => "Node", :foreign_key => "node_id"
 
   def validate_position
-    errors.add_to_base("Node is not in the world") unless in_world?
-  end
-
-  def in_world?
-    return false if self.latitude < -90 or self.latitude > 90
-    return false if self.longitude < -180 or self.longitude > 180
-    return true
+    errors.add(:base, "Node is not in the world") unless in_world?
   end
 
   def self.from_node(node)
@@ -25,20 +30,115 @@ class OldNode < ActiveRecord::Base
     old_node.visible = node.visible
     old_node.tags = node.tags
     old_node.timestamp = node.timestamp
-    old_node.user_id = node.user_id
-    old_node.id = node.id
+    old_node.changeset_id = node.changeset_id
+    old_node.node_id = node.id
+    old_node.version = node.version
     return old_node
   end
+  
+  def to_xml
+    doc = OSM::API.new.get_xml_doc
+    doc.root << to_xml_node()
+    return doc
+  end
 
-  def to_xml_node
+  def to_xml_node(changeset_cache = {}, user_display_name_cache = {})
     el1 = XML::Node.new 'node'
-    el1['id'] = self.id.to_s
-    el1['lat'] = self.latitude.to_s
-    el1['lon'] = self.longitude.to_s
-    el1['user'] = self.user.display_name if self.user.data_public?
-    Node.split_tags(el1, self.tags)
+    el1['id'] = self.node_id.to_s
+    el1['version'] = self.version.to_s
+    el1['changeset'] = self.changeset_id.to_s
+
+    if self.visible?
+      el1['lat'] = self.lat.to_s
+      el1['lon'] = self.lon.to_s
+    end
+
+    if changeset_cache.key?(self.changeset_id)
+      # use the cache if available
+    else
+      changeset_cache[self.changeset_id] = self.changeset.user_id
+    end
+
+    user_id = changeset_cache[self.changeset_id]
+
+    if user_display_name_cache.key?(user_id)
+      # use the cache if available
+    elsif self.changeset.user.data_public?
+      user_display_name_cache[user_id] = self.changeset.user.display_name
+    else
+      user_display_name_cache[user_id] = nil
+    end
+
+    if not user_display_name_cache[user_id].nil?
+      el1['user'] = user_display_name_cache[user_id]
+      el1['uid'] = user_id.to_s
+    end
+
+    self.tags.each do |k,v|
+      el2 = XML::Node.new('tag')
+      el2['k'] = k.to_s
+      el2['v'] = v.to_s
+      el1 << el2
+    end
+
     el1['visible'] = self.visible.to_s
     el1['timestamp'] = self.timestamp.xmlschema
+    
+    el1['redacted'] = self.redaction.id.to_s if self.redacted?
+
     return el1
   end
+
+  def save_with_dependencies!
+    save!
+    #not sure whats going on here
+    clear_aggregation_cache
+    clear_association_cache
+    #ok from here
+    @attributes.update(OldNode.where(:node_id => self.node_id, :timestamp => self.timestamp, :version => self.version).first.instance_variable_get('@attributes'))
+   
+    self.tags.each do |k,v|
+      tag = OldNodeTag.new
+      tag.k = k
+      tag.v = v
+      tag.node_id = self.node_id
+      tag.version = self.version
+      tag.save!
+    end
+  end
+
+  def tags
+    unless @tags
+      @tags = Hash.new
+      OldNodeTag.where(:node_id => self.node_id, :version => self.version).each do |tag|
+        @tags[tag.k] = tag.v
+      end
+    end
+    @tags = Hash.new unless @tags
+    @tags
+  end
+
+  def tags=(t)
+    @tags = t 
+  end
+
+  def tags_as_hash 
+    return self.tags
+  end 
+ 
+  # Pretend we're not in any ways 
+  def ways 
+    return [] 
+  end 
+ 
+  # Pretend we're not in any relations 
+  def containing_relation_members 
+    return [] 
+  end 
+
+  # check whether this element is the latest version - that is,
+  # has the same version as its "current" counterpart.
+  def is_latest_version?
+    current_node.version == self.version
+  end
 end