Refactor registrars

#765

app/models/registrar.rb

@@ -6,7 +6,7 @@ class Registrar < ActiveRecord::Base
   has_many :api_users, dependent: :restrict_with_error
   has_many :messages
   has_many :invoices, foreign_key: 'buyer_id'
-  has_many :accounts
+  has_many :accounts, dependent: :destroy
   has_many :nameservers, through: :domains
   has_many :whois_records
   has_many :white_ips, dependent: :destroy
@@ -17,37 +17,10 @@ class Registrar < ActiveRecord::Base
   validates :name, :reference_no, :code, uniqueness: true
   validates :accounting_customer_code, presence: true
   validates :language, presence: true
-  validate :forbidden_codes
+  validate :forbid_special_code
 
   after_initialize :set_defaults
-
-  def forbidden_codes
-    return true unless ['CID'].include? code
-    errors.add(:code, I18n.t(:forbidden_code))
-    false
-  end
-
   before_validation :generate_iso_11649_reference_no
-  def generate_iso_11649_reference_no
-    return if reference_no.present?
-
-    loop do
-      base = nil
-      loop do
-        base = SecureRandom.random_number.to_s.last(8)
-        break if base.to_i != 0 && base.length == 8
-      end
-
-      control_base = (base + '2715' + '00').to_i
-      reminder = control_base % 97
-      check_digits = 98 - reminder
-
-      check_digits = check_digits < 10 ? "0#{check_digits}" : check_digits.to_s
-
-      self.reference_no = "RF#{check_digits}#{base}"
-      break unless self.class.exists?(reference_no: reference_no)
-    end
-  end
 
   validates :email, :billing_email,
     email_format: { message: :invalid },
@@ -177,4 +150,29 @@ class Registrar < ActiveRecord::Base
   def set_defaults
     self.language = Setting.default_language unless language
   end
+
+  def forbid_special_code
+    errors.add(:code, :forbidden) if code == 'CID'
+  end
+
+  def generate_iso_11649_reference_no
+    return if reference_no.present?
+
+    loop do
+      base = nil
+      loop do
+        base = SecureRandom.random_number.to_s.last(8)
+        break if base.to_i != 0 && base.length == 8
+      end
+
+      control_base = (base + '2715' + '00').to_i
+      reminder = control_base % 97
+      check_digits = 98 - reminder
+
+      check_digits = check_digits < 10 ? "0#{check_digits}" : check_digits.to_s
+
+      self.reference_no = "RF#{check_digits}#{base}"
+      break unless self.class.exists?(reference_no: reference_no)
+    end
+  end
 end