Module: Einvoicing::Validators::Base

Defined in:
lib/einvoicing/validators/base.rb

Overview

Shared validation helpers for country-specific validators. Each validator exposes a .validate(invoice) class method that returns an array of error hashes (empty = valid). Each error hash has the shape:

{ field: Symbol, error: Symbol, message: String }

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Class Method Details

.format(value, field, pattern, message) ⇒ Object

Format check via regex — returns an error hash or nil.



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# File 'lib/einvoicing/validators/base.rb', line 44

def self.format(value, field, pattern, message)
  { field: field, error: :invalid, message: message } unless value.to_s.match?(pattern)
end

.included(base) ⇒ Object 



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# File 'lib/einvoicing/validators/base.rb', line 11

def self.included(base)
  base.extend(ClassMethods)
end

.luhn_valid?(number_string) ⇒ Boolean

Luhn algorithm for SIREN (9 digits) and SIRET (14 digits). Returns true if the number passes the Luhn check.

Returns:

  • (Boolean) 


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# File 'lib/einvoicing/validators/base.rb', line 27

def self.luhn_valid?(number_string)
  digits = number_string.chars.map(&:to_i)
  sum = 0
  digits.reverse.each_with_index do |d, i|
    d = i.odd? ? d * 2 : d
    d -= 9 if d > 9
    sum += d
  end
  (sum % 10).zero?
end

.presence(value, field, message, error: :blank) ⇒ Object

Presence check — returns an error hash or nil.



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# File 'lib/einvoicing/validators/base.rb', line 39

def self.presence(value, field, message, error: :blank)
  { field: field, error: error, message: message } if value.nil? || value.to_s.strip.empty?
end