rails-jsonapi-example

Small example API on Ruby on Rails using JSONAPI::Resources.

Description

This example API follows the JSON API specification. If you are familiar with it then no much description is necessary and you can easily dive into the source.

Here is the list of all things of what it does:

1. Receives and URL and saves it into the database.
2. Parses the remote content using Nokogiri library and values of the allowed tags (h1, h2, h3 and a) and stores them in the database.
3. Lists all stored pages.
4. Shows a single page by its ID.
5. Lists all stored tags for a specified page.

Scaffold

Since we are using Ruby on Rails we don't need to start from scratch and simply use bundle, rails and rake tools to do most of the work for us.

Here is the list of all commands used to generate our example scaffold:

# create a new Rails application
rails new rails-jsonapi-example --api
cd rails-jsonapi-example

# add gems using `bundle`
bundle add jsonapi-resources
bundle add nokogiri
bundle add minitest
bundle add webmock
# or just manually edit Gemfile and run `bundle update`

# models
rails generate model Page url:string
rails generate model PageTag name:string{3} value:string page:belongs_to
rake db:create
rake db:migrate

# controllers
rails generate jsonapi:controller Api::V1::Pages
rails generate jsonapi:controller Api::V1::PageTags

# JSONAPI::Resources
rails generate jsonapi:resource api::v1::page
rails generate jsonapi:resource api::v1::page_tag

After running commands above we are good to go.

Running

As any other Ruby on Rails app:

rails server

Routes

In order to get the list of all routes you can use rake routes. However the most interesting ones will be:

api_v1_page_tags GET  /api/v1/pages/:page_id/tags(.:format) api/v1/page_tags#get_related_resources {:relationship=>"tags", :source=>"api/v1/pages"}
    api_v1_pages GET  /api/v1/pages(.:format)               api/v1/pages#index
                 POST /api/v1/pages(.:format)               api/v1/pages#create
     api_v1_page GET  /api/v1/pages/:id(.:format)           api/v1/pages#show

Description

POST /api/v1/pages

Receives an URL, validates it and stores it into the database. The remote content is parsed and values of the allowed tags (h1, h2, h3 and a) are also stored in the database.

curl -i -H "Accept: application/vnd.api+json" -H 'Content-Type:application/vnd.api+json' -X POST -d '{"data": {"type": "pages", "attributes": {"url": "https://example.com/" }}}' http://localhost:3000/api/v1/pages

GET /api/v1/pages

Lists all pages stored in the database.

curl -i -H "Accept: application/vnd.api+json" -H 'Content-Type:application/vnd.api+json' -X GET http://localhost:3000/api/v1/pages

GET /api/v1/pages/:id

Shows the single page.

curl -i -H "Accept: application/vnd.api+json" -H 'Content-Type:application/vnd.api+json' -X GET http://localhost:3000/api/v1/pages/1

GET /api/v1/pages/:id/tags

List all tags stored in the database for specified page.

curl -i -H "Accept: application/vnd.api+json" -H 'Content-Type:application/vnd.api+json' -X GET http://localhost:3000/api/v1/pages/1/tags

License

Released under the MIT License.