How To Handle Special Actions In Ruby on Rails Controllers?

device.rb

class Device < ApplicationRecord
  # Define Validation Errors (TODO: Move it to a Validator)
  class DeviceHasBeenAlreadySetUpError < StandartError
    def message
      "Device [#{@device.id}] has been already set up."
    end
  end

  # => raise DeviceHasBeenAlreadySetUpError if @device.setup_at.present?

  has_many :maintenances
end

maintenance.rb

class Maintenance < ApplicationRecord
  # MaintenanceEntry - periodic process.
  belongs_to :device
end

maintenance_controller.rb

# Inspired by https://mikerogers.io/2021/03/19/how-to-handle-special-actions-in-ruby-on-rails-controllers

# Example 1
#
# app/controllers/devices/maintenance_controller.rb
class Devices::MaintenanceController < DevicesController
  # DevicesController has a before_action for setting @device
  # for the update method which we inherit.

  # PATCH /devices/1/maintenance
  def update
    @device.touch(:maintained_at)

    redirect_to device_path(@device)
  end
end

# Example 2
#
# app/controllers/devices/maintenance_controller.rb
class Devices::MaintenanceController < DevicesController
  # DevicesController has a before_action for setting @device
  # for the update method which we inherit.

  # GET /devices/1/maintenance/new
  def new
    # Do we really need that action?
    # We generate all the things from QR code scanning.
  end
  
  # POST /devices/1/maintenances
  def create
    @device.maintenances.create(
      ticket: params[:ticket], # SRV004
      technician: params[:technician], # Jack Smitson
      maintenance_type: params[:maintenance_type], # "planned" or "unplanned" or ....
      # See more: https://en.wikipedia.org/wiki/Maintenance_(technical)
      maintenance_start_at: Time.now.utc # 22.08.2008 14:30:00 UTC
    )

    redirect_to device_path(@device)
  end

  # PATCH /devices/1/maintenances/1
  def update
    @device.touch(:maintenance_end_at)

    redirect_to device_path(@device)
  end
end

setup_controller.rb

# Inspired by https://mikerogers.io/2021/03/19/how-to-handle-special-actions-in-ruby-on-rails-controllers

# Example 1
#
# app/controllers/devices/setup_controller.rb
class Devices::SetupController < DevicesController
  # DevicesController has a before_action for setting @device
  # for the update method which we inherit.

  # Note: We need the POST action as a Setup will happens only once.

  # POST /devices/1/setup
  def update
    @device.touch(:setup_at)

    redirect_to device_path(@device)
  end
end

:qr_code_printed_at
:qr_code_linked_at