Where do I put helper methods for ActionMailer views?

Question

I have a method that takes an array of strings and joins them so they do something like this:

>> my_arr
=> [\"A\", \"B\", \"C\"]
>> and_join(m         


        

Answer 1

Use the helper method in your mailer to define the helper class to use

# mailer_helper.rb
module MailerHelper
  def and_join(arr)
    # whatever …
  end
end

# my_mailer.rb
class MyMailer < ActionMailer::Base
  helper MailerHelper
  …
end

then you can use the methods in views as well.