X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/2d5df687fcbf2564e2f199535aed04f67953bd0e..eb6b1ae73357d7629b804e086a58e2ad4528b35e:/app/controllers/node_controller.rb

diff --git a/app/controllers/node_controller.rb b/app/controllers/node_controller.rb
index a172b2dd7..1e34bc10d 100644
--- a/app/controllers/node_controller.rb
+++ b/app/controllers/node_controller.rb
@@ -64,6 +64,10 @@ class NodeController < ApplicationController
 
   # Dump the details on many nodes whose ids are given in the "nodes" parameter.
   def nodes
+    if not params['nodes']
+      raise OSM::APIBadUserInput.new("The parameter nodes is required, and must be of the form nodes=id[,id[,id...]]")
+    end
+
     ids = params['nodes'].split(',').collect { |n| n.to_i }
 
     if ids.length == 0