我正在尝试像任何国家/地区的 iban 代码一样进行 iban 验证。我从 stackoverflow 获得了一些帮助来构建该代码,但我仍然有一些问题,我不知道它在哪里。
我总是收到“这不是有效的 IBAN”错误消息。但有时我尝试正确的 iban 代码作为定义的国家。
请问有没有人在该代码中帮助我进行此验证?
代码在这里:
class BankAccount < ActiveRecord::Base
belongs_to :user
validates :bank_name, presence: true
validate :iban, :valid_iban?, presence: true
private
def valid_iban?
ibans = iban.upcase.scan(/\w/).join
ibans = ibans.gsub(/_/, '')
iban_length = ibans.length
country = ibans.scan(/\A../).join
length_correct_for_country = true
case country
when "IE"
if iban_length == 22
length_correct_for_country = true
else
length_correct_for_country = false
end
when "AL"
if iban_length == 28
length_correct_for_country = true
else
length_correct_for_country = false
end
when "TR"
if iban_length == 26
length_correct_for_country = true
else
length_correct_for_country = false
end
when "GB"
if iban_length == 22
length_correct_for_country = true
else
length_correct_for_country = false
end
when "VG"
if iban_length == 24
length_correct_for_country = true
else
length_correct_for_country = false
end
end
first_four_characters = ibans.slice!(0..3)
reordered_number = ibans + first_four_characters
letters_removed = []
reordered_number.scan(/./) do |character|
case character
when "A"
letters_removed << 10
when "9"
letters_removed <<9
end
end
letters_removed = letters_removed.join.to_i
remainder = letters_removed % 97
if remainder == 1 && length_correct_for_country
else
remainder = remainder.to_s
errors.add(:iban, " That is not a valid IBAN. The IBAN that is being supplied")
end
end
end