LaunchDarkly SDK for Ruby

Quick setup

1. Install the Ruby SDK with gem

   gem install ldclient-rb
   

2. Require the LaunchDarkly client:

   require 'ldclient-rb'
   

3. Create a new LDClient with your API key:

   client = LaunchDarkly::LDClient.new("your_api_key")
   

Your first feature flag

1. Create a new feature flag on your dashboard

2. In your application code, use the feature's key to check wthether the flag is on for each user:

   if client.toggle?("your.flag.key", {:key => "user@test.com"}, false)
       # application code to show the feature
   else
       # the code to run if the feature is off
   end
   

Learn more

Check out our documentation for in-depth instructions on configuring and using LaunchDarkly. You can also head straight to the complete reference guide for this SDK.

Contributing

We encourage pull-requests and other contributions from the community. We've also published an SDK contributor's guide that provides a detailed explanation of how our SDKs work.