Module: Nocode::Util::Optionable

Included in:
Step
Defined in:
lib/nocode/util/optionable.rb

Overview

Add on a DSL for classes. The DSL allows for a new class-level keyword called ‘option’ which can be used to describe what metadata values are important. Then instances can reference those option’s values using magic _option methods. For example:

class Animal

include Optionable
option :type
attr_writer :options

end

animal = Animal.new animal.options = { ‘type’ => ‘dog’ }

animal.type_option # -> should return ‘dog’

Defined Under Namespace

Modules: ClassMethods

Constant Summary collapse

OPTION_PREFIX = 
'_option'

Class Method Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object 



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# File 'lib/nocode/util/optionable.rb', line 49

def method_missing(name, *args, &block)
  key = option_key(name)

  if name.to_s.end_with?(OPTION_PREFIX) && self.class.options.include?(key)
    options[key]
  else
    super
  end
end

Class Method Details

.included(klass) ⇒ Object 



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# File 'lib/nocode/util/optionable.rb', line 20

def self.included(klass)
  klass.extend(ClassMethods)
end

Instance Method Details

#options ⇒ Object 



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# File 'lib/nocode/util/optionable.rb', line 45

def options
  @options || {}
end

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

Returns:

  • (Boolean) 


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# File 'lib/nocode/util/optionable.rb', line 59

def respond_to_missing?(name, include_private = false)
  key = option_key(name)

  (name.to_s.end_with?(OPTION_PREFIX) && self.class.options.include?(key)) || super
end