Shortcut for manipulating HTTP request parameters

param-hash.rb

class ParamHash < HashWithIndifferentAccess
  def merge_string!(string)
    hash = Hash.new
    string.split('&').each { |kv|
      k,v = kv.split('=')
      hash[k] = URI::unescape(v)
    }
    self.merge! hash
  end
  def merge_string(string)
    hash = Hash.new
    string.split('&').each { |kv|
      k,v = kv.split('=')
      hash[k] = URI::unescape(v)
    }
    self.merge hash
  end
  def to_s
    self.map { |k,v| "#{k}=#{ URI::escape(v.to_s) }" }.join('&')
  end
end