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