Job creation and queuing in Ruby on Rails - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a basic Active Job class.

Ruby on Rails

class MyJob < ApplicationJob
  queue_as :[1]

  def perform(*args)
    # job code here
  end
end

Drag options to blanks, or click blank then click option'

Aurgent

Bmain

Cbackground

Ddefault

Attempts:

3 left

💡 Hint

Common Mistakes

Using a queue name that is not defined in the system

Forgetting to set a queue name

The queue_as method sets the queue name. default is the standard queue name in Rails Active Job.

2fill in blank

medium

Complete the code to enqueue a job to run asynchronously.

Ruby on Rails

MyJob.[1](user_id)

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Aperform_later

Bperform_now

Cenqueue

Drun_async

Attempts:

3 left

💡 Hint

Common Mistakes

Using perform_now which runs the job immediately

Using non-existent methods like run_async

perform_later enqueues the job to run asynchronously in the background.

3fill in blank

hard

Fix the error in the job class to correctly access the argument.

Ruby on Rails

class NotifyUserJob < ApplicationJob
  def perform([1])
    UserMailer.welcome_email([1]).deliver_now
  end
end

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Aparams

Bargs

Cuser_id

Duser

Attempts:

3 left

💡 Hint

Common Mistakes

Using a generic name like args without unpacking

Using user when only the ID is passed

The job receives user_id as an argument, which is passed to the mailer.

4fill in blank

hard

Fill both blanks to schedule a job to run 5 minutes from now.

Ruby on Rails

MyJob.[1](wait: [2].minutes).perform_later

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Aset

Bperform_later

C5

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using perform_later without set for scheduling

Using wrong wait time values

set(wait: 5.minutes) schedules the job to run after 5 minutes.

5fill in blank

hard

Fill all three blanks to create a job that retries 3 times with 10 seconds delay between attempts.

Ruby on Rails

class RetryJob < ApplicationJob
  [1] StandardError, wait: [2], attempts: [3]

  def perform
    # job code
  end
end

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Aretry_on

B10.seconds

C3

Drescue_from

Attempts:

3 left

💡 Hint

Common Mistakes

Using rescue_from which handles exceptions differently

Not specifying wait time or attempts correctly

retry_on sets retry behavior with wait time and attempts count.