Set Attribute Dynamically of Ruby Object

Question

How can I set an object attribute dynamically in Ruby e.g.

def set_property(obj, prop_name, prop_value)
    #need to do something like > obj.prop_name =          


        

Answer 1

If circumstances allow for an instance method, the following is not overly offensive:

class P00t
  attr_reader :w00t

  def set_property(name, value)
    prop_name = "@#{name}".to_sym # you need the property name, prefixed with a '@', as a symbol
    self.instance_variable_set(prop_name, value)
  end
end

Usage:

p = P00t.new
p.set_property('w00t', 'jeremy')