Ruby On Rails in UA/Программирование на ROR/code snippets

шаблончики

Удаляем из логина запрещенные символы

self.login.to_s.downcase.gsub(/[^\._\-a-z0-9\@]/i,'_')
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#генерируем уникальные идентификаторы для записей

require 'digest/sha1'
self.handle = Digest::SHA1.hexdigest(Time.now.to_s + self.name)
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#валидируем название домена
include DomainValidate
validates_format_of :domain_name,
:on => :save,
:with => MyValidate::RegExp::HOSTNAME,
:message => 'does not appear to be a valid domain address'

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#/lib/domain_validate.rb
module MyValidate
module RegExp
module Pattern
# alpha = lowalpha | upalpha
ALPHA = "a-zA-Z"
# alphanum = alpha | digit
ALNUM = "#{ALPHA}\\d"

# domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
DOMLABEL = "(?:[#{ALNUM}](?:[-#{ALNUM}]*[#{ALNUM}])?)"
# toplabel = alpha | alpha *( alphanum | "-" ) alphanum
TOPLABEL = "(?:[#{ALPHA}](?:[-#{ALNUM}]*[#{ALNUM}])?)"
# hostname = *( domainlabel "." ) toplabel [ "." ]
HOSTNAME = "(?:#{DOMLABEL}\\.)*#{TOPLABEL}\\.?"

USER = "(?:[#{ALNUM}](?:[-_#{ALNUM}]*[#{ALNUM}])?)"
EMAIL = "(?:#{USER}@)#{HOSTNAME}"
end

HOSTNAME = Regexp.new("^#{Pattern::HOSTNAME}$", false, 'N').freeze
EMAIL = Regexp.new("^#{Pattern::EMAIL}$", false, 'N').freeze
CONTENT_EMAIL = Regexp.new("#{Pattern::EMAIL}", false, 'N').freeze
end
end