Ralyxa
A Ruby framework for interacting with Amazon Alexa. Designed to work with Sinatra, although can be used with a few other web frameworks.
An example application implementing the gem can be played with here.
Installation
Add this line to your application's Gemfile:
gem 'ralyxa'
And then execute:
$ bundle
Or install it yourself as:
$ gem install ralyxa
Usage
Getting Started
First, you've gotta pass the request from Sinatra to Ralyxa. Add a single POST
route to your Sinatra application, with the following:
require 'sinatra'
require 'ralyxa'
post '/' do
Ralyxa::Skill.handle(request)
end
Second, you've gotta define your intents. To define a new intent, create a directory called 'intents'. Inside there, create a .rb
file:
intent "IntentName" do
# Whatever logic you want to do
# fetching something for the response
# persisting something etc
# this is plain Ruby, so go wild
respond("This is what Alexa will say to the user")
end
Third, define your Intent and Utterance on the Alexa Developer portal. You can then test your application in the Service Simulator (either by pushing the Sinatra app somewhere with HTTPS or, more easily, using ngrok to tunnel the application).
Being more pro
ask
and tell
There are two kinds of responses you can send to Alexa: ask
s and tell
s. An ask
should ask the user a question, and expect them to reply. A tell
should end the conversation.
When defining intents, you can use the #ask
and #tell
methods in place of #respond
to keep the session open, or close it:
intent "AskMoreQuestions" do
ask("What next?")
end
intent "SayGoodbye" do
tell("Goodbye.")
end
A
tell
is basically a#respond
withend_session: true
. You can use that instead if you prefer.
Reading and setting session attributes
You can persist data to an Alexa session:
intent "PersistThis" do
ask("Got it. What now?", session_attributes: { persist: "this" })
end
And, subsequently, read it:
intent "ReadFromSession" do
persisted_data = request.session_attribute("persist")
ask("You persisted: #{ persisted_data }")
end
Go check out the
Alexa::Request
object to see what else you can do with therequest
.
Ending sessions
If, for some reason, you want to end a session in some other way than with a tell
, you can:
intent "ConfuseTheUser" do
respond("This actually ends the session.", end_session: true)
end
Starting over
You can start conversations over, which clears the session attributes:
intent "AMAZON.StartOverIntent" do
ask("Starting over. What next?", start_over: true)
end
Using SSML
You can use Speech Synthesis Markup Language to directly control Alexa's pronunciation:
intent "SpellOut" do
ask("<speak><say-as interpret-as='spell-out'>Hello World</say-as></speak>", ssml: true)
end
Using Cards
You can send cards to the Alexa app. Ralyxa will automatically figure out if you're trying to send a 'Simple' or 'Standard' card type:
# Simple card
intent "SendSimpleCard" do
simple_card = card("Hello World", "I'm alive!")
ask("What do you think of the Simple card I just sent?", card: simple_card)
end
# Standard card
intent "SendStandardCard" do
standard_card = card("Hello World", "I'm alive!", "http://placehold.it/200")
ask("What do you think of the Standard card I just sent?", card: standard_card)
end
Development
After checking out the repo, run bundle install
to install dependencies. Then, run rspec
to run the tests. You can also run irb
for an interactive prompt that will allow you to experiment.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/sjmog/ralyxa. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
The main areas of focus are:
- Account linking :construction:
- Audio directives :construction:
- Reprompts :construction:
- Generators?
License
The gem is available as open source under the terms of the MIT License.