Method: Effective::Resources::Instance#instance_changes

Defined in:
app/models/effective/resources/instance.rb

#instance_changes(only: nil, except: nil) ⇒ Object

used by effective_logging



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# File 'app/models/effective/resources/instance.rb', line 78

def instance_changes(only: nil, except: nil)
  return {} unless (instance.present? && instance.previous_changes.present?)

  # Build up our only and except
  only = Array(only).map(&:to_sym)
  except = Array(except).map(&:to_sym) + BLACKLIST

  changes = instance.previous_changes.symbolize_keys.delete_if do |attribute, (before, after)|
    begin
      (before.kind_of?(ActiveSupport::TimeWithZone) && after.kind_of?(ActiveSupport::TimeWithZone) && before.to_i == after.to_i) ||
      (before == nil && after == false) || (before == nil && after == ''.freeze)
    rescue => e
      true
    end
  end

  changes = changes.except(*except) if except.present?
  changes = changes.slice(*only) if only.present?

  # Log to_s changes on all belongs_to associations
  belong_tos.each do |association|
    next if except.present? && except.include?(association.name)
    next unless only.blank? || only.include?(association.name)

    if (change = changes.delete(association.foreign_key)).present?
      changes[association.name] = [(association.klass.find_by_id(change.first) if changes.first), instance.send(association.name)]
    end
  end

  changes
end