37 lines
848 B
Ruby
37 lines
848 B
Ruby
|
# UrlValidator
|
||
|
|
#
|
||
|
|
# Custom validator for URLs.
|
||
|
|
#
|
||
|
|
# By default, only URLs for the HTTP(S) protocols will be considered valid.
|
||
|
|
# Provide a `:protocols` option to configure accepted protocols.
|
||
|
|
#
|
||
|
|
# Example:
|
||
|
|
#
|
||
|
|
# class User < ActiveRecord::Base
|
||
|
|
# validates :personal_url, url: true
|
||
|
|
#
|
||
|
|
# validates :ftp_url, url: { protocols: %w(ftp) }
|
||
|
|
#
|
||
|
|
# validates :git_url, url: { protocols: %w(http https ssh git) }
|
||
|
|
# end
|
||
|
|
#
|
||
|
|
class UrlValidator < ActiveModel::EachValidator
|
||
|
|
def validate_each(record, attribute, value)
|
||
|
|
unless valid_url?(value)
|
||
|
|
record.errors.add(attribute, "must be a valid URL")
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
private
|
||
|
|
|
||
|
|
def default_options
|
||
|
|
@default_options ||= { protocols: %w(http https) }
|
||
|
|
end
|
||
|
|
|
||
|
|
def valid_url?(value)
|
||
|
|
options = default_options.merge(self.options)
|
||
|
|
|
||
|
|
value =~ /\A#{URI.regexp(options[:protocols])}\z/
|
||
|
|
end
|
||
|
|
end
|