Contents

class MaterialCodeGenerator
  attr_accessor :material_object, :material_repository

  delegate :material_class_id_changed?, :material_class_id?, :material_class, to: :material_object

  def initialize(material_object, material_repository = Material)
    self.material_object = material_object
    self.material_repository = material_repository
  end

  def generate!
    return unless materials_code_can_changed?

    material_object.code = material_code
  end

  protected

  def material_code
    [material_class.masked_number, next_code].join('.')
  end

  def next_code
    code = previous_material_code
  end

  def previous_material_code
    return 1 if previous_material.blank?

    previous_material.code.gsub("#{material_class.masked_number}.", '').to_i + 1
  end

  def previous_material
    @previous_material ||= material_repository
                           .by_material_class_id(material_class.id)
                           .reorder(:code)
                           .last
  end

  def materials_code_can_changed?
    material_class_id_changed? && material_class_id?
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
unico-training-7.8.0	app/business/material_code_generator.rb