Module: ActiveStripper::ClassMethods

Defined in:
lib/active_stripper.rb

Instance Method Summary collapse

Instance Method Details

#strip_value_from(*args) ⇒ Object

Helper to use in your Class

Parameters:

  • *args (Array<Any>) —

    List of attributes to use for setter generation Length must be > 2, last argument is the preprocessor to run on value



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# File 'lib/active_stripper.rb', line 82

def strip_value_from(*args)
  raise if args.count < 2
  operator = args.pop

  args = args.reject { | field | self.respond_to?(field) }

  # Dynamically generate an anonymous module to be prepended
  # self is equal to the object where the current method is called
  mod = Module.new do
    args.each do | field |
      define_method :"#{field}=" do | val |
        val = case operator.class.name
              when "Proc"
                operator.call(val)
              when "Hash", "Array"
                ActiveStripper.iterable_apply(val, operator, self)
              when "String", "Symbol"
                ActiveStripper.method_apply(val,
                                            operator,
                                            self,
                                            "ActiveStripper::Helpers")
              end

        super(val)
      end
    end
  end

  prepend mod
end