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