Initial commit

db/migrate/20190910105717_increase_trading_fee_precisions.rb

@@ -0,0 +1,22 @@
+class IncreaseTradingFeePrecisions < ActiveRecord::Migration[5.2]
+  def change
+    reversible do |direction|
+      direction.up do
+        change_column :trading_fees, :maker, :decimal, precision: 7, scale: 6, default: 0, null: false
+        change_column :trading_fees, :taker, :decimal, precision: 7, scale: 6, default: 0, null: false
+
+        Market.find_each do |m|
+          if m.amount_precision + m.price_precision > Market::FUNDS_PRECISION
+            m.update_attribute(:price_precision, 5)
+            m.update_attribute(:amount_precision, 5)
+          end
+        end
+      end
+
+      direction.down do
+        change_column :trading_fees, :maker, :decimal, precision: 5, scale: 4, default: 0, null: false
+        change_column :trading_fees, :taker, :decimal, precision: 5, scale: 4, default: 0, null: false
+      end
+    end
+  end
+end