Ignore failure in data-migration part of old schema migration.

The migration should succeed if the Metadatum model did not exist in
the version of the project that was used to run the migration.

diff --git a/services/api/db/migrate/20130118002239_rename_metadata_attributes.rb b/services/api/db/migrate/20130118002239_rename_metadata_attributes.rb
index 1f7af58d32854f1a149c34e3fd38b96a20117ae3..deaa35c256de08dbdf4b0101962eea5adedb1c6b 100644 (file)
--- a/services/api/db/migrate/20130118002239_rename_metadata_attributes.rb
+++ b/services/api/db/migrate/20130118002239_rename_metadata_attributes.rb
@@ -9,18 +9,24 @@ class RenameMetadataAttributes < ActiveRecord::Migration
     add_index :metadata, :head_kind
     add_index :metadata, :tail
     add_index :metadata, :tail_kind
-    Metadatum.where('head like ?', 'orvos#%').each do |m|
-      kind_uuid = m.head.match /^(orvos\#.*)\#([-0-9a-z]+)$/
-      if kind_uuid
-        m.update_attributes(head_kind: kind_uuid[1],
-                            head: kind_uuid[2])
+    begin
+      Metadatum.where('head like ?', 'orvos#%').each do |m|
+        kind_uuid = m.head.match /^(orvos\#.*)\#([-0-9a-z]+)$/
+        if kind_uuid
+          m.update_attributes(head_kind: kind_uuid[1],
+                              head: kind_uuid[2])
+        end
       end
+    rescue
     end
   end
 
   def down
-    Metadatum.where('head_kind is not null and head_kind <> ? and head is not null', '').each do |m|
-      m.update_attributes(head: m.head_kind + '#' + m.head)
+    begin
+      Metadatum.where('head_kind is not null and head_kind <> ? and head is not null', '').each do |m|
+        m.update_attributes(head: m.head_kind + '#' + m.head)
+      end
+    rescue
     end
     remove_index :metadata, :tail_kind
     remove_index :metadata, :tail