add currency entity

db/migrate/20210811014107_create_currencies.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+class CreateCurrencies < ActiveRecord::Migration[6.1]
+  def change
+    create_table(:currencies) do |t|
+      t.string(:name, null: false)
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_08_08_153626) do
+ActiveRecord::Schema.define(version: 2021_08_11_014107) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -55,6 +55,12 @@ ActiveRecord::Schema.define(version: 2021_08_08_153626) do
     t.index ["reset_password_token"], name: "index_admin_users_on_reset_password_token", unique: true
   end
 
+  create_table "currencies", force: :cascade do |t|
+    t.string "name", null: false
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+  end
+
   create_table "user_documents", force: :cascade do |t|
     t.string "status", null: false
     t.bigint "user_id", null: false