Created
November 8, 2009 16:54
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module ValidatesUrlFormatOf | |
IPv4_PART = /\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]/ # 0-255 | |
REGEXP = %r{ | |
\A | |
https?:// # http:// or https:// | |
([^\s:@]+:[^\s:@]*@)? # optional username:pw@ | |
( (xn--)?[^\W_]+([-.][^\W_]+)*\.[a-z]{2,6}\.? | # domain (including Punycode/IDN)... | |
#{IPv4_PART}(\.#{IPv4_PART}){3} ) # or IPv4 | |
(:\d{1,5})? # optional port | |
([/?]\S*)? # optional /whatever or ?whatever | |
\Z | |
}iux | |
DEFAULT_MESSAGE = 'does not appear to be a valid URL' | |
DEFAULT_MESSAGE_URL = 'does not appear to be valid' | |
def validates_url_format_of(*attr_names) | |
options = { :allow_nil => false, | |
:allow_blank => false, | |
:with => REGEXP } | |
options = options.merge(attr_names.pop) if attr_names.last.is_a?(Hash) | |
attr_names.each do |attr_name| | |
message = attr_name.to_s.match(/(_|\b)URL(_|\b)/i) ? DEFAULT_MESSAGE_URL : DEFAULT_MESSAGE | |
validates_format_of(attr_name, { :message => message }.merge(options)) | |
end | |
end | |
end | |
ActiveRecord::Base.extend(ValidatesUrlFormatOf) |
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