Add versions table/model for prices

db/migrate/20180916133911_remove_paper_trail_columns_from_prices.rb

@@ -1,6 +0,0 @@
-class RemovePaperTrailColumnsFromPrices < ActiveRecord::Migration
-  def change
-    remove_column :prices, :creator_str
-    remove_column :prices, :updator_str
-  end
-end

db/migrate/20200910102028_create_version_for_prices.rb

@@ -0,0 +1,26 @@
+class CreateVersionForPrices < ActiveRecord::Migration[6.0]
+  def up
+    create_table :log_prices, force: :cascade do |t|
+      t.string :item_type, null: false
+      t.integer :item_id, null: false
+      t.string :event, null: false
+      t.string :whodunnit
+      t.json :object
+      t.json :object_changes
+      t.datetime :created_at
+      t.string :session
+      t.json :children
+      t.string :uuid
+    end
+
+    add_index 'log_prices', ['item_type', 'item_id'], name: 'index_log_prices_on_item_type_and_item_id', using: :btree
+    add_index 'log_prices', ['whodunnit'], name: 'index_log_prices_on_whodunnit', using: :btree
+  end
+
+  def down
+    remove_index :log_prices, name: 'index_log_prices_on_item_type_and_item_id'
+    remove_index :log_prices, name: 'index_log_prices_on_whodunnit'
+
+    drop_table :log_prices
+  end
+end