AssociationTypeMismatch in Rails/GraphQL? - ruby-on-rails

Question

So my data is pretty simple. Books and Users.
class Books
belongs_to :user
end
class Users
has_many :books
end
Users has the following fields:
first_name
last_name
email
Books has the following fields:
author
title
description
My book_type looks like:
Types::BookType = GraphQL::ObjectType.define do
name 'Book'
field :id, !types.ID
field :author, !types.String
field :title, !types.String
field :user, -> {Types::UserType}, property: :user
end
User_type looks like:
Types::UserType = GraphQL::ObjectType.define do
name 'User'
field :id, !types.ID
field :first_name, !types.String
field :last_name, !types.String
field :email, !types.String
end
Mutation_type looks like:
Types::MutationType = GraphQL::ObjectType.define do
name 'Mutation'
field :bookCreate, function: Resolvers::BookCreate.new
end
Book_create file looks like:
class Resolvers::BookCreate < GraphQL::Function
argument :author, !types.String
argument :title, !types.String
argument :description, !types.String
argument :user, !types.Int
type Types::BookType
def call(_obj, args, _ctx)
Book.create!(
author: args[:author],
title: args[:title],
description: args[:description],
user: args[:user]
)
end
end
Then in localhost:3000/graphiql I do the following:
mutation book {
bookCreate(
author: "Test",
title: "Book Test",
description: "Book Description",
user: 2) {
id
author
title
description
}
}
Getting the following:
<ActiveRecord::AssociationTypeMismatch: User(#69982231587660) expected, got 2 which is an instance of Integer(#11387600)>
Where did I go wrong?

Answer 1

So I changed user to user_id and then on the book model did:
belongs_to :user, foreign_key: 'user_id'
Now it works.