ActiveJob should support passing of keyword arguments to perform method

[threadhead]

Since Rails 5+ will required Ruby 2.2+, ActiveJob should support the passing of keyword arguments to the perform method.

class MyAwesomeJob < ActiveJob::Base
  def perform(ginger_ninjas: 1)
    attack!(ginger_ninjas)
  end
end

MyAwesomeJob.perform_later(ginger_ninjas: 5)

Currently (rails 4.2), you get a ArgumentError: wrong number of arguments (1 for 0) if you try to pass keyword arguments.

[sgrif]

This appears to be due to the hash getting converted to string keys during job serialization/deserialization, while keyword arguments only work with symbol keyed hashes.

[sgrif]

Backported in 31085a5

[threadhead]

@sgrif Impressive. I was going to start hacking on it after I got back from lunch, but you beat me to it. Thank you.

[chrisnicola]

This is awesome. I was testing it out with Ruby 4.2.4 and noticed that if you mix keyword and regular arguments it doesn't work. For example:

perform(message, channel: '#default')

Won't work and gives you a ArgumentError: wrong number of arguments (2 for 1) error.

perform(message:, channel: '#default')

Does.

[mosesliao]

curious, can I use it for perform_later??