Redmine 3.4.4

db/migrate/20120223110929_change_attachments_container_defaults.rb

@@ -0,0 +1,25 @@
+class ChangeAttachmentsContainerDefaults < ActiveRecord::Migration
+  def self.up
+    # Need to drop the index otherwise the following error occurs in Rails 3.1.3:
+    #
+    # Index name 'temp_index_altered_attachments_on_container_id_and_container_type' on
+    # table 'altered_attachments' is too long; the limit is 64 characters
+    remove_index :attachments, [:container_id, :container_type]
+
+    change_column :attachments, :container_id, :integer, :default => nil, :null => true
+    change_column :attachments, :container_type, :string, :limit => 30, :default => nil, :null => true
+    Attachment.where("container_id = 0").update_all("container_id = NULL")
+    Attachment.where("container_type = ''").update_all("container_type = NULL")
+
+    add_index :attachments, [:container_id, :container_type]
+  end
+
+  def self.down
+    remove_index :attachments, [:container_id, :container_type]
+
+    change_column :attachments, :container_id, :integer, :default => 0, :null => false
+    change_column :attachments, :container_type, :string, :limit => 30, :default => "", :null => false
+
+    add_index :attachments, [:container_id, :container_type]
+  end
+end