Add basic storage for validation events

db/migrate/20210629074044_create_validation_events.rb

@@ -0,0 +1,28 @@
+class CreateValidationEvents < ActiveRecord::Migration[6.1]
+
+  def up
+    execute <<-SQL
+      CREATE TYPE validation_type AS ENUM ('email_validation', 'manual_force_delete');
+    SQL
+
+    create_table :validation_events do |t|
+      t.jsonb :event_data
+      t.boolean :result
+      t.references :validation_eventable, polymorphic: true
+
+      t.timestamps
+    end
+
+    add_column :validation_events, :event_type, :validation_type
+    add_index :validation_events, :event_type
+  end
+
+  def down
+    remove_column :validation_events, :event_type
+    execute <<-SQL
+      DROP TYPE validation_type;
+    SQL
+
+    drop_table :validation_events
+  end
+end