undefined method `add' for #<Flipper::Adapters::Redis:0x00007ff5a6203a48>

[stlewis]

Given the following configuration:

Flipper.configure do |config|
  config.default do
    client = Redis.new
    adapter = Flipper::Adapters::Redis.new(client)
    Flipper.new(adapter)
  end
end

Upon trying to invoke this line:

  Flipper.enable(:my_feature)

I'm getting back this error/trace:

/Users/stevelewis/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/flipper-0.16.0/lib/flipper/adapters/memoizable.rb:48:in add': undefined method add' for #<Flipper::Adapters::Redis:0x00007ff5a6203a48> (NoMethodError)

FWIW, in my Gemfile:

gem 'flipper'
gem 'flipper-redis'

Do I need to peg one/both of these down to a version to get them to play nicely together?

[AlexWheeler]

Hey @stlewis I see that you're using flipper 0.16.0, but what version of redis and flipper-redis are you running?

I'm thinking your redis gem may be an older version than flipper-redis requires so bundler is resolving to use a really old version of flipper-redis that does not have a redis version constraint on it

[stlewis]

@AlexWheeler It turns out my version of Redis was actually too new, but you had the right idea! I made sure that my redis gem was grabbing an appropriate version, and re-installed flipper-redis.

Thanks for the help!

[AlexWheeler]

Great! I'll find some time to try out/test flipper-redis with redis > 4.0 and bump version constraint if all is good