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For the name, set it to Content-Type and for the value, set it to application/json. Down below, click “+ Add Secret Header or Parameter”. Next, we’ll need to configure some Transformations. Click on “Settings” at the top, then set the “Base URL” to your Heroku app root endpoint (the one you got just before). Enter a name and a description for your API, and select a category. Head on to RapidAPI and click on “ Add your API” on the top right. Now that your API is online, we can add it to RapidAPI. Your API is now on Heroku! You can try the same curl commands we tried before, just replace the URL of your Heroku app. Now we need to create our controller and method: # app/controllers/cow_controller.rb What this is saying is, take a POST to /say and route it to the method say in CowController. Let’s add this endpoint to our routes file: # config/routes.rb Clients will POST to this endpoint with a set of parameters, and get a response back from us. Adding the Controller and Routeįor now, our API will only have one endpoint: /say. Make sure you run bundle install to get the gems. The jbuilder gem simplifies serving JSON in our API, by allowing us to build payloads using plain ruby. It’s a ruby implementation of the famous program. The first gem is what will allow us to serve Cowsay to our API clients. rails new cow_say -api -skip-active-recordĪfter this command is done, we’ll need to add two more gems to our Gemfile: In our case, we’ll generate a new API project, and also skip ActiveRecord, since we won’t be needing to store anything in a database. This can be further customized depending on your needs. #Ruby on rails parallels access localhost generatorFortunately, Rails’ application generator offers an option to create a more “lean” version of a Rails app, where only the necessary modules for an API are installed. We won’t be rendering HTML views, for example. Since we’re going to be building an API, we don’t exactly need everything Rails offers. I personally prefer Visual Studio Code, but feel free to use the editor you’re most comfortable with. #Ruby on rails parallels access localhost codeOther than that, you’ll need your favorite code editor. Installing Rails is also pretty simple: you can use their official installation guide. #Ruby on rails parallels access localhost installTo install Ruby, refer to the official website for instructions. Both are relatively easy to install, but the procedure depends on the platform you’re on. What we will needįor this tutorial, you will need Ruby (preferably 2.6) and Ruby on Rails. We’ll later deploy this API to Heroku and publish it to RapidAPI so it’s easier for other developers to find it. Users of the API will be able to send a text and customize it using different parameters accepted by the Cowsay program. In this article, we’ll be building an API as an interface to Cowsay. If you’re planning on building an app, adding an API should definitely be in your roadmap. There are different types of APIs, but most boil down to RESTful, JSON APIs. Shorthand for Application Programming Interface, it provides developers programmatic access to the service. Every major online service nowadays offers an API. ![]()
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