Initial commit

app/models/transaction.rb

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+class Transaction < ApplicationRecord
+  # == Constants ============================================================
+
+  STATUSES = %w[pending succeed].freeze
+
+  # == Attributes ===========================================================
+
+  # == Extensions ===========================================================
+
+  serialize :data, JSON unless Rails.configuration.database_support_json
+
+  # == Relationships ========================================================
+
+  belongs_to :reference, polymorphic: true
+  belongs_to :currency, foreign_key: :currency_id
+
+  # == Validations ==========================================================
+
+  validates :currency, :amount, :from_address, :to_address, :status, presence: true
+
+  validates :status, inclusion: { in: STATUSES }
+
+  # == Scopes ===============================================================
+
+  # == Callbacks ============================================================
+
+  after_initialize :initialize_defaults, if: :new_record?
+
+  # TODO: record expenses for succeed transactions
+
+  # == Class Methods ========================================================
+
+  # == Instance Methods =====================================================
+
+  def initialize_defaults
+    self.status = :pending if status.blank?
+  end
+end
+
+# == Schema Information
+# Schema version: 20201207134745
+#
+# Table name: transactions
+#
+#  id             :bigint           not null, primary key
+#  currency_id    :string(255)      not null
+#  reference_type :string(255)
+#  reference_id   :bigint
+#  txid           :string(255)
+#  from_address   :string(255)
+#  to_address     :string(255)
+#  amount         :decimal(32, 16)  default(0.0), not null
+#  block_number   :integer
+#  txout          :integer
+#  status         :string(255)
+#  options        :json
+#  created_at     :datetime         not null
+#  updated_at     :datetime         not null
+#
+# Indexes
+#
+#  index_transactions_on_currency_id                      (currency_id)
+#  index_transactions_on_currency_id_and_txid             (currency_id,txid) UNIQUE
+#  index_transactions_on_reference_type_and_reference_id  (reference_type,reference_id)
+#  index_transactions_on_txid                             (txid)
+#