rails deliver_later with delay
Step 1: Add the "delayed_job" gem to your Gemfile and run the bundle command to install it.
Step 2: Create a new instance of the class where you want to use the deliver_later
method. For example, if you want to use it in the UserMailer class, create a new file called user_mailer.rb
in the app/mailers
directory.
Step 3: In the user_mailer.rb
file, define a method for the email you want to send. For example, if you want to send a welcome email to new users, define a method called welcome_email(user)
.
Step 4: Inside the method, use the deliver_later
method to enqueue the email to be sent later. For example, you can use UserMailer.welcome_email(user).deliver_later
.
Step 5: Save the changes and restart your Rails server if it was running.
Step 6: When the email needs to be sent, the deliver_later
method will use the Delayed::Job
backend to process the email in the background. This allows your application to continue running without waiting for the email to be sent.
Step 7: The Delayed::Job
backend will automatically pick up the enqueued email and send it when it's ready. You don't need to do anything else to trigger the sending of the email.
Step 8: If you want to customize the delay time, you can pass an optional delay
argument to the deliver_later
method. For example, you can use UserMailer.welcome_email(user).deliver_later(delay: 1.hour)
to delay the email for 1 hour.
Step 9: You can also chain multiple deliver_later
calls to enqueue multiple emails in one go. For example, you can use UserMailer.welcome_email(user).deliver_later.deliver_later
to enqueue two emails to be sent later.
Step 10: Monitor the Delayed::Job
queue to ensure that the enqueued emails are being processed and sent. You can use tools like the delayed_job_web
gem or the Rails console to check the status of the jobs.
That's it! You have successfully used deliver_later
with delay in Ruby on Rails. This allows you to send emails in the background, improving the performance of your application.