Initial commit

db/migrate/20180329154130_update_deprecated_currency_ids.rb

@@ -0,0 +1,14 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+class UpdateDeprecatedCurrencyIds < ActiveRecord::Migration[4.2]
+  def change
+    # Migrate deprecated market codes to new.
+    if File.file?('config/markets.old.yml')
+      (YAML.load_file('config/markets.old.yml') || []).each do |market|
+        execute %{UPDATE orders SET market_id = '#{market.fetch('id')}' WHERE market_id = '#{market.fetch('code')}'}
+        execute %{UPDATE trades SET market_id = '#{market.fetch('id')}' WHERE market_id = '#{market.fetch('code')}'}
+      end
+    end
+  end
+end