Add WikiAccessLevel migration from `NULL` to `20`

2 files changed, 24 insertions, 1 deletions

diff --git a/db/post_migrate/20180809195358_migrate_null_wiki_access_levels.rb b/db/post_migrate/20180809195358_migrate_null_wiki_access_levels.rb
new file mode 100644
index 00000000000..d3557efecbd
--- /dev/null
+++ b/db/post_migrate/20180809195358_migrate_null_wiki_access_levels.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class MigrateNullWikiAccessLevels < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  class ProjectFeature < ActiveRecord::Base
+    include EachBatch
+
+    self.table_name = 'project_features'
+  end
+
+  def up
+    ProjectFeature.where(wiki_access_level: nil).each_batch do |relation|
+      relation.update_all(wiki_access_level: 20)
+    end
+  end
+
+  def down
+    # there is no way to rollback this change, there are no downsides in keeping migrated data.
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 1288a98745c..9dc122b54b3 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20180808162000) do
+ActiveRecord::Schema.define(version: 20180809195358) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"