Naming and simplification

db/migrate/20210306220439_merge_bsv_and_training_days.rb

@@ -0,0 +1,18 @@
+#  Copyright (c) 2021, Pfadibewegung Schweiz. This file is part of
+#  hitobito_pbs and licensed under the Affero General Public License version 3
+#  or later. See the COPYING file at the top-level directory or at
+#  https://github.com/hitobito/hitobito_pbs.
+
+class MergeBsvAndTrainingDays < ActiveRecord::Migration[6.0]
+  def up
+    rename_column:event_participations, :bsv_days, :training_days
+    Event.update_all "training_days = bsv_days"
+    remove_column :events, :bsv_days
+  end
+
+  def down
+    rename_column:event_participations, :training_days, :bsv_days
+    add_column :events, :bsv_days, :decimal, scale: 2, precision: 6
+    Event.update_all "bsv_days = training_days"
+  end
+end