Contents

# frozen_string_literal: true

module Vimo
  module SystemName
    extend ActiveSupport::Concern

    included do
      before_validation :generate_system_name, on: :create
      class_attribute :_system_human_name
    end

    module ClassMethods
      def validates_system_name(opts = {})
        validates :system_name, presence: true, format: { with: /\A\w[\w\-\/]+\z/ }
        validates :name, presence: true

        if opts[:uniqueness_scope]
          validates :system_name, uniqueness: opts[:uniqueness_scope] == true ? true : { scope: opts[:uniqueness_scope] }
        end
      end

      def has_system_name(opts = {})
        attr_protected :system_name if opts.delete(:protected)
        self._system_human_name = opts.delete(:human_name) || :name
        validates_system_name(opts)
      end
    end

    protected

    def system_human_name
      send(self._system_human_name)
    end

    # Generates system_name from 'system_human_name'
    def generate_system_name
      generate_system_name! if self.system_name.blank?
    end

    def generate_system_name!
      if self.system_human_name.present?
        slug = self.system_human_name.parameterize
        self.system_name = slug.blank? ? internal_system_name : slug
      end
    end

    # This method is used when we need to generate a system_name
    # but ther is no suitable 'name' (human_name) from which
    # we can guess a reasonable one.
    #
    def internal_system_name
      "#{self.class.to_s}-#{SecureRandom.hex(6)}"
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
vimo-0.1.3	app/models/vimo/system_name.rb
vimo-0.1.1	app/models/vimo/system_name.rb
vimo-0.1.0	app/models/vimo/system_name.rb