| class Mutations::CreateBook < Mutations::BaseMutation | |
| argument :title, String, required: true | |
| argument :pages, Integer, required: true | |
| argument :year_published, Integer, required: false | |
| type Types::BookType | |
| def resolve(title:, pages:, year_published:) | |
| Book.new( | |
| title: title, | |
| pages: pages, | |
| year_published: year_published) | |
| end | |
| end |