Tests for PreconditionFailed error messages.

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

diff --git a/app/models/way.rb b/app/models/way.rb
index 52d28020969f4e1d1ed51a70e21144ad2cf54eac..40a024b8bb2cd87853dee1ab2133c59328b40976 100644 (file)
--- a/app/models/way.rb
+++ b/app/models/way.rb
@@ -235,7 +235,7 @@ class Way < ActiveRecord::Base
     self.nds.each do |n|
       node = Node.find(:first, :conditions => ["id = ?", n])
       unless node and node.visible
-        raise OSM::APIPreconditionFailedError.new("The node with id #{n} either does not exist, or is not visible")
+        raise OSM::APIPreconditionFailedError.new("Way #{self.id} requires the node with id #{n}, which either does not exist, or is not visible.")
       end
     end
     return true
@@ -251,31 +251,18 @@ class Way < ActiveRecord::Base
     # shouldn't be possible to get race conditions.
     Way.transaction do
       check_consistency(self, new_way, user)
-      if RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id",
+      rel = RelationMember.find(:first, :joins => :relation,
                              :conditions => [ "visible = ? AND member_type='Way' and member_id=? ", true, self.id])
-        raise OSM::APIPreconditionFailedError.new("You need to make sure that this way is not a member of a relation.")
-      else
-        self.changeset_id = new_way.changeset_id
-        self.changeset = new_way.changeset
-
-        self.tags = []
-        self.nds = []
-        self.visible = false
-        save_with_history!
-      end
-    end
-  end
-
-  # Find nodes that belong to this way only
-  def unshared_node_ids
-    node_ids = self.nodes.collect { |node| node.id }
-
-    unless node_ids.empty?
-      way_nodes = WayNode.find(:all, :conditions => "node_id in (#{node_ids.join(',')}) and id != #{self.id}")
-      node_ids = node_ids - way_nodes.collect { |way_node| way_node.node_id }
+      raise OSM::APIPreconditionFailedError.new("Way #{self.id} still used by relation #{rel.relation.id}.") if rel
+      
+      self.changeset_id = new_way.changeset_id
+      self.changeset = new_way.changeset
+
+      self.tags = []
+      self.nds = []
+      self.visible = false
+      save_with_history!
     end
-
-    return node_ids
   end
 
   # Temporary method to match interface to nodes
@@ -287,11 +274,11 @@ class Way < ActiveRecord::Base
   # if any referenced nodes are placeholder IDs (i.e: are negative) then
   # this calling this method will fix them using the map from placeholders 
   # to IDs +id_map+. 
-  def fix_placeholders!(id_map)
+  def fix_placeholders!(id_map, placeholder_id = nil)
     self.nds.map! do |node_id|
       if node_id < 0
         new_id = id_map[:node][node_id]
-        raise "invalid placeholder for #{node_id.inspect}: #{new_id.inspect}" if new_id.nil?
+        raise OSM::APIBadUserInput.new("Placeholder node not found for reference #{node_id} in way #{self.id.nil? ? placeholder_id : self.id}") if new_id.nil?
         new_id
       else
         node_id