models.rb

class Feed < ApplicationRecord
  has_many :imports
  has_one :latest_import, -> { order(started_at: :desc) }, class_name: "Import"
  has_one :latest_successful_import, -> { where(error: nil).order(started_at: :desc) }, class_name: "Import"
end

class Import < ApplicationRecord
  has_operation :operation
  belongs_to :feed
  
  def reprocess
    new_import = self.class.new(feed:)
    new_import.operation = operation.dup
    new_import.operation.processed_at = nil
    new_import.save
    new_import.operation.process
  end
end