fix migration for heroku

2015-10-23 22:32:09 +08:00 · 2015-10-23 22:32:09 +08:00 · 53d77a0e5b
commit 53d77a0e5b
parent 5b882b1332
1 changed files with 1 additions and 0 deletions
--- a/db/migrate/20151001024122_mapping_polymorphism.rb
+++ b/db/migrate/20151001024122_mapping_polymorphism.rb
@ -17,6 +17,7 @@ class MappingPolymorphism < ActiveRecord::Migration
      unless mapping.synapse_id.nil?
        mapping.mappable = Synapse.find(mapping.synapse_id)
      else
+        next if mapping.topic_id == 0
        mapping.mappable = Topic.find(mapping.topic_id)
      end
      mapping.save