add mutations to exchange painel

db/migrate/20210816015139_add_default_value_to_sell_crypto_order_recived_amount_cents.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+class AddDefaultValueToSellCryptoOrderRecivedAmountCents < ActiveRecord::Migration[6.1]
+  def change
+    # rubocop:disable Rails/ReversibleMigration
+    execute(<<-SQL.squish)
+      UPDATE sell_crypto_orders
+      SET received_amount_cents = 0
+      WHERE received_amount_cents IS NULL
+    SQL
+
+    change_column_default(:sell_crypto_orders, :received_amount_cents, from: nil, to: 0)
+    change_column_null(:sell_crypto_orders, :received_amount_cents, false)
+  end
+end

db/migrate/20210816015156_add_default_value_to_buy_cripto_paid_amount_cents.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+class AddDefaultValueToBuyCriptoPaidAmountCents < ActiveRecord::Migration[6.1]
+  def change
+    # rubocop:disable Rails/ReversibleMigration
+    execute(<<-SQL.squish)
+      UPDATE buy_crypto_orders
+      SET received_amount = 0
+      WHERE received_amount IS NULL
+    SQL
+
+    change_column_default(:buy_crypto_orders, :received_amount, from: nil, to: 0)
+    change_column_null(:buy_crypto_orders, :received_amount, false)
+  end
+end