63 lines
1.0 KiB
Ruby
63 lines
1.0 KiB
Ruby
#:stopdoc:
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unless Object.respond_to?(:blank?)
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class Object
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# Check first to see if we are in a Rails environment, no need to
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# define these methods if we are
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# An object is blank if it's nil, empty, or a whitespace string.
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# For example, "", " ", nil, [], and {} are blank.
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#
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# This simplifies
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# if !address.nil? && !address.empty?
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# to
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# if !address.blank?
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def blank?
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if respond_to?(:empty?) && respond_to?(:strip)
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empty? or strip.empty?
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elsif respond_to?(:empty?)
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empty?
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else
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!self
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end
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end
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end
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class NilClass
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def blank?
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true
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end
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end
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class FalseClass
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def blank?
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true
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end
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end
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class TrueClass
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def blank?
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false
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end
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end
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class Array
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alias_method :blank?, :empty?
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end
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class Hash
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alias_method :blank?, :empty?
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end
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class String
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def blank?
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empty? || strip.empty?
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end
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end
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class Numeric
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def blank?
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false
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end
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end
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end
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#:startdoc: |