GET /v2/expertises_users/:id
Get an expertises user

curl  -H "Authorization: Bearer YOUR_ACCESS_TOKEN" "https://api.intra.42.fr/v2/expertises_users/3"

{
  "id": 3,
  "expertise_id": 6,
  "interested": false,
  "value": 2,
  "contact_me": false,
  "created_at": "2017-11-22T13:41:22.512Z",
  "user_id": 3,
  "expertise": {
    "id": 6,
    "name": "AngularJS",
    "slug": "angularjs",
    "url": "https://api.intra.42.fr/v2/expertises/angularjs",
    "kind": "frameworks",
    "created_at": "2017-11-22T13:41:01.803Z",
    "expertises_users_url": "https://api.intra.42.fr/v2/expertises/angularjs/expertises_users"
  },
  "user": {
    "id": 3,
    "login": "gargamel",
    "url": "https://api.intra.42.fr/v2/users/gargamel"
  }
}

require "oauth2"
UID = "Your application uid"
SECRET = "Your application secret"
client = OAuth2::Client.new(UID, SECRET, site: "https://api.intra.42.fr")
token = client.client_credentials.get_token

response = token.get("/v2/expertises_users/3")
response.status
# => 200
response.parsed
# => {"id"=>3, "expertise_id"=>6, "interested"=>false, "value"=>2, "contact_me"=>false, "created_at"=>"2017-11-22T13:41:22.512Z", "user_id"=>3, "expertise"=>{"id"=>6, "name"=>"AngularJS", "slug"=>"angularjs", "url"=>"https://api.intra.42.fr/v2/expertises/angularjs", "kind"=>"frameworks", "created_at"=>"2017-11-22T13:41:01.803Z", "expertises_users_url"=>"https://api.intra.42.fr/v2/expertises/angularjs/expertises_users"}, "user"=>{"id"=>3, "login"=>"gargamel", "url"=>"https://api.intra.42.fr/v2/users/gargamel"}}