Module: PocztaPolska::DynamicReader

Included in:
Event, Package
Defined in:
lib/poczta_polska/dynamic_reader.rb

Overview

This helper module is included into other classes and allows to access elements nested in the @data hash. In order to use it, a class must define a constant hash ATTR_MAP. For the following element in the hash:

my_method: [:some, :nested, :value, :to_s]

calling object.my_method will return @data[:nested].to_s. The last element in the array is either a conversion method name, a Proc or nil.

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method) ⇒ Object 



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# File 'lib/poczta_polska/dynamic_reader.rb', line 17

def method_missing(method)
  return super unless respond_to_missing?(method)

  keys = self.class::ATTR_MAP[method].dup
  convert = keys.pop
  d = @data
  keys.each { |k| d = d[k] }

  if convert.nil?
    d
  elsif convert.is_a?(Proc)
    convert.call(d)
  else
    d.public_send(convert)
  end
end

Instance Method Details

#respond_to_missing?(method, include_private = false) ⇒ Boolean

Returns true if the method name is a key in the ATTR_MAP hash.

Returns:

  • (Boolean) 


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# File 'lib/poczta_polska/dynamic_reader.rb', line 13

def respond_to_missing?(method, include_private = false)
  self.class::ATTR_MAP.has_key?(method) || super
end