How to send an email to multiple recipients

Question

I want to send an email to @user.email and @business.manager.email .

The business doesn't always have a manager.

Is there a short way to create an array of recipients with these 2 (possibly 1) email addresses?

recipients = [@user.email, @business.manager.email]
mail(from: "admin@spam.com", to: recipients, subject: "Spam")

Answer 1

You could create an array with an email, and push a second one.

recipients = [@user.email]
recipients << @business.manager.email if @business.manager

This won't push the manager's email unless there is a manager.

Answer 2

您还可以： recipients = [@user.email, @business.manager.email].compact.reject(&:blank?)

Answer 3

If you want to keep the array declaration to one line, you could do this:

[@user.email, @business.manager.try(:email)].compact

try for the email will return nil if a business doesn't have a manager. And compact removes nil values from the array.