create coinchange

app/models/coin_change.rb

@@ -0,0 +1,2 @@
+class CoinChange < ApplicationRecord
+end

db/migrate/20200724094729_create_coin_changes.rb

@@ -0,0 +1,13 @@
+class CreateCoinChanges < ActiveRecord::Migration[5.2]
+  def change
+    create_table :coin_changes do |t|
+      t.integer :amount
+      t.string :description
+      t.string :reason
+      t.integer :to_wallet_id
+      t.integer :from_wallet_id
+
+      t.timestamps
+    end
+  end
+end

spec/models/coin_change_spec.rb

@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe CoinChange, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end