45 lines
940 B
Ruby
45 lines
940 B
Ruby
module Validators
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class Base
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def initialize(model, options={})
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@model = model
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@options = options
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end
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def validate!
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raise InvalidRecord.new(message) unless valid?
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rescue StandardError => e
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raise InvalidRecord.new("An error raised during validation with #{self.class}: #{e.class}: #{e.message}")
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end
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def valid?
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raise 'override me'
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end
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def message
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raise 'override me'
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end
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class << self
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private
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# this method delegates @valid? and @message methods to helper validator, passed as block
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def delegate_to_helper_validator(&block)
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define_method :helper_validator do
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@helper_validator ||= self.instance_eval(&block)
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end
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define_method :valid? do
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self.helper_validator.valid?
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end
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define_method :message do
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self.helper_validator.message
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end
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end
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end
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end
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end
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