Module: StatusManager::ClassMethods

Defined in:
lib/status-manager.rb

Instance Method Summary collapse

Instance Method Details

#attr_as_status(status_attribute, status_sets, options = {}) ⇒ Object 



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# File 'lib/status-manager.rb', line 17

def attr_as_status(status_attribute, status_sets, options={})
	register_status_sets(status_attribute, status_sets)
	status_group(status_attribute, options[:group]) if options.key?(:group)
	set_default_status(status_attribute, options[:default]) if options.key?(:default)
end

#register_status_sets(status_attribute, status_sets, default_status = nil) ⇒ Object 



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# File 'lib/status-manager.rb', line 23

def register_status_sets(status_attribute, status_sets, default_status=nil)
	# if status_sets parameter is array.
	# ex) register_status_sets(status, [:onsale, :soldout, :reject])
	raise "Not defined statuses" if status_sets.empty?
	if status_sets.instance_of?(Array)
		raise Exception, "#{status_attribute} column type must be :string or :text in this case, if you want to specify column value use Hash class" unless [:string, :text].include?(self.columns_hash[status_attribute.to_s].type)
		_status_sets = {}
		status_sets.each { |status_set| _status_sets[status_set] = status_set.to_s }
		status_sets = _status_sets
	end

	status_store = StatusStore.new(status_attribute, status_sets)
	status_store_list.add(status_store)

	scope "#{status_store.attribute_name}", lambda{ | statuses | where("#{self.table_name}.#{status_store.attribute_name.to_s}" => status_store.values(statuses)) }

	status_store.status_sets.each do |key, value|
		#active_record scope setting
		scope "#{status_store.attribute_name}_#{key}", where("#{self.table_name}.#{status_store.attribute_name}" => value)

		#status check method
		define_method "#{status_store.attribute_name}_#{key}?" do 
			self.send("#{status_store.attribute_name}") == value
		end

		define_method "#{status_store.attribute_name}_was_#{key}?" do 
			self.send("#{status_store.attribute_name}_was") == value
		end

		#update status
		define_method "update_#{status_store.attribute_name}_to_#{key}" do 
			self.update_attributes("#{status_store.attribute_name}" => "#{value}")
		end

		define_method "#{status_store.attribute_name}_to_#{key}" do 
			self.send("#{status_store.attribute_name}=", value)
		end
	end

	#status check method
	define_method "#{status_store.attribute_name}?" do |status|
		self.send("#{status_store.attribute_name}_#{status}?")
	end

	define_method "#{status_store.attribute_name}_was?" do |status|
		self.send("#{status_store.attribute_name}_was_#{status}?")
	end

	#status setter (do not override attr_accessible)
	define_method "#{status_store.attribute_name}_to" do |status|
		raise "#{status} is undefined status or it is group status" unless status_store.status?(status)
		status_value = self.class.status_store_list.get(status_store.attribute_name).value(status)
		self.send("#{status_store.attribute_name}=", status_value)
	end

	# update status
	define_method "update_#{status_store.attribute_name}_to" do |status|
		raise "#{status} is undefined status or it is group status" unless status_store.status?(status)
		self.update_attributes(status_attribute.to_sym => self.class.status_store_list.get(status_store.attribute_name).value(status))
	end

	define_method("#{status_store.attribute_name}_changed?") do |options={}|
		statuses = self.send("#{status_store.attribute_name}_change")
		if statuses
			if statuses[0] == statuses[1]
				return false
			elsif options[:from] && options[:to]
				self.send("#{status_store.attribute_name}_was?", options[:from]) && self.send("#{status_store.attribute_name}?", options[:to])
			elsif options[:to]
				self.send("#{status_store.attribute_name}?", options[:to])
			elsif options[:from]
				self.send("#{status_store.attribute_name}_was?", options[:from])
			else
				return true
			end
		else
			return false
		end
	end

	#get status list
	define_singleton_method "#{status_store.attribute_name.to_s.pluralize}" do
		self.status_store_list.get(status_store.attribute_name).status_sets
	end
end

#set_default_status(status_attribute, status) ⇒ Object 



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# File 'lib/status-manager.rb', line 109

def set_default_status(status_attribute, status)
	before_create do |obj|
		obj.send("#{status_attribute.to_s}=", obj.class.send(status_attribute.to_s.pluralize)[status]) unless obj.send(status_attribute.to_s)
	end
end

#status_store_list ⇒ Object 



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# File 'lib/status-manager.rb', line 115

def status_store_list
	if self.class_variable_defined?(:@@status_store_list)
		self.class_variable_get(:@@status_store_list)
	else
		self.class_variable_set(:@@status_store_list, StatusStoreList.new)
	end
end