X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/988726079e8e2f8ce4b49115c10a8a1d22040972..eee2c981d6a29eb7f15b8957570bbf8515d3d947:/services/api/app/models/link.rb

diff --git a/services/api/app/models/link.rb b/services/api/app/models/link.rb
index 787088d53e..8e83a15bab 100644
--- a/services/api/app/models/link.rb
+++ b/services/api/app/models/link.rb
@@ -9,6 +9,7 @@ class Link < ArvadosModel
   after_create :maybe_invalidate_permissions_cache
   after_destroy :maybe_invalidate_permissions_cache
   attr_accessor :head_kind, :tail_kind
+  validate :name_link_has_valid_name
 
   api_accessible :user, extend: :common do |t|
     t.add :tail_uuid
@@ -81,4 +82,14 @@ class Link < ArvadosModel
       User.invalidate_permissions_cache
     end
   end
+
+  def name_link_has_valid_name
+    if link_class == 'name'
+      unless name.is_a? String and !name.empty?
+        errors.add('name', 'must be a non-empty string')
+      end
+    else
+      true
+    end
+  end
 end