Module: Hokusai::Templatable

Extended by:
ActiveSupport::Concern
Defined in:
lib/hokusai.rb

Overview

Templatable models support taking a snapshot of their data, for later use stamping out clones.

Include this module to obtain the as_template and from_template methods that support a simple container such as Hokusai::Container.

Configure it with the template declaration, which accepts a list of columns and an includes option for nested assocations.

Example

class Device < ActiveRecord::Base
  include Hokusai::Templatable

  has_many :interfaces

  template :name, :model, :location, :year, include: [:interfaces]
end

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#as_template ⇒ Object

Serialize this object (and any included associations) according to the template specification.



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# File 'lib/hokusai.rb', line 63

def as_template
  result_hash = {}

  🌊[:columns].each_with_object(result_hash) do |column|
    result_hash[column] = read_attribute_for_template(column)
  end

  🌊[:associations].each do |association|
    records = send(association)
    result_hash[association] = if records.respond_to?(:to_ary)
      records.to_ary.map { |r| r.as_template }
    else
      records.as_template
    end
  end

  result_hash
end