Class: Statelogic::ActiveRecord::ClassMethods::StateScopeHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/statelogic/activerecord.rb

Constant Summary collapse

CALLBACKS = 
::ActiveRecord::Callbacks::CALLBACKS.map(&:to_sym).to_set.freeze
MACROS_PATTERN = 
/\Avalidates_/.freeze

Instance Method Summary collapse

Constructor Details

#initialize(cl, state, config) ⇒ StateScopeHelper

Returns a new instance of StateScopeHelper.



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# File 'lib/statelogic/activerecord.rb', line 16

def initialize(cl, state, config)
  @class, @state, @config, @conditions = cl, state, config, state.map {|x| :"#{x}?"}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

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



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# File 'lib/statelogic/activerecord.rb', line 31

def method_missing(method, *args, &block)
  if CALLBACKS.include?(method) || method.to_s =~ MACROS_PATTERN
    options = args.last
    args.push(options = {}) unless options.is_a?(Hash)
    options[:if] = Array(options[:if]).unshift(@conditions)
    @class.send(method, *args, &block)
  else
    super
  end
end

Instance Method Details

#validates_transition_to(*states) ⇒ Object Also known as: transitions_to 



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# File 'lib/statelogic/activerecord.rb', line 20

def validates_transition_to(*states)
  attr = @config[:attribute]
  options = states.extract_options!.update(
    :in => states,
    :if => [:"#{attr}_changed?", :"was_#{@state}?"]
  )
  @class.validates_inclusion_of(attr, options)
end