Using actions

Actions in the service are sequential calls to methods. Service methods are called using the make method.

Examples

Minimal

In its minimal form, calling methods via make is optional. The call method can be used instead.

class PostsService::Create < ApplicationService::Base
  def call
    # something
  end
end

Several methods

class PostsService::Create < ApplicationService::Base
  # ...

  make :assign_api_model
  make :perform_api_request
  make :process_result

  def assign_api_model
    internals.api_model = APIModel.new(...)
  end

  def perform_api_request
    internals.response = APIClient.resource.create(internals.api_model)
  end

  def process_result
    ARModel.create!(internals.response)
  end
end

Options

See the options section for details.

Group of multiple actions

See the grouping section for details.

Aliases for make

Add alternatives to the make method via action_aliases configuration.

configuration do
  action_aliases %i[execute]
end

execute :something

def something
  # ...
end

Customization for make

Add frequently used method name prefixes via action_shortcuts configuration. Method names stay the same length, but make lines become shorter and more readable.

Simple mode

In simple mode, values are passed as an array of symbols.

configuration do
  action_shortcuts %i[assign perform]
end

class CMSService::API::Posts::Create < CMSService::API::Base
  # ...

  assign :model

  perform :request

  private

  def assign_model
    # Build model for API request
  end

  def perform_request
    # Perform API request
  end

  # ...
end

Advanced mode Since 2.14.0

In advanced mode, values are passed as a hash.

configuration do
  action_shortcuts(
    %i[assign],
    {
      restrict: {           # replacement for make
      prefix: :create,      # method name prefix
      suffix: :restriction  # method name suffix
      }
    }
  )
end

class PaymentsService::Restrictions::Create < ApplicationService::Base
  input :payment, type: Payment

  # The exclamation mark will be moved to the end of the method name
  restrict :payment!

  private

  def create_payment_restriction!
    inputs.payment.restrictions.create!(
      reason: "Suspicion of fraud"
    )
  end
end