Create transaction.rb

global_business/business/models/transaction.rb

@@ -0,0 +1,26 @@
+class Transaction < ApplicationRecord
+  # Encryption and decryption of sensitive data
+  encrypts :amount
+
+  # Associations
+  belongs_to :account
+  belongs_to :user
+
+  # Validations
+  validates :amount, presence: true, numericality: { greater_than: 0.01, less_than: 100000.00 }
+  validates :transaction_type, presence: true, inclusion: { in: %w[deposit withdrawal] }
+
+  # Callbacks
+  before_save :hash_amount
+  after_create :send_transaction_email
+
+  private
+
+  def hash_amount
+    self.amount = Encryption.hash(self.amount)
+  end
+
+  def send_transaction_email
+    TransactionMailer.transaction_email(self).deliver_now
+  end
+end