GraphQL Mutation Input

Without input type

  type Mutation {

    createCategory(name:String!):Category

    updateCategory(id:ID, name:String!):Category

    deleteCategory(id:ID):String

    createPublisher(name:String!):Publisher

    updatePublisher(id:ID, name:String!):Publisher

    deletePublisher(id:ID):String

    createAuthor(name:String!):Author

    updateAuthor(id:ID, firstName:String, lastName:String):Author

    deleteAuthor(id:ID):String

    createBook(title:String!, categoryId:String, publisherId:String, authorId:String):Book

    updateBook(id:ID, title:String!, categoryId:String, publisherId:String, authorId:String):Book

    deleteBook(id:ID):String

  }

With input type

  input CategoryInput {

    name:String!

  }

  input PublisherInput {

    name:String!

  }

  input AuthorInput {

    firstName:String

    lastName:String

  }

  input BookInput {

    title:String!

    categoryId:String

    publisherId:String

    authorId:String

  }

  type Mutation {

    createCategory(input:CategoryInput):Category

    updateCategory(id:ID, input:CategoryInput):Category

    deleteCategory(id:ID):String

    createPublisher(input:PubliserInput):Publisher

    updatePublisher(id:ID, input:PubliserInput):Publisher

    deletePublisher(id:ID):String

    createAuthor(input:AuthorInput):Author

    updateAuthor(id:ID, input:AuthorInput):Author

    deleteAuthor(id:ID):String

    

    createBook(input:BookInput):Book

    updateBook(id:ID, input:BookInput):Book

    deleteBook(id:ID):String

  }  

Correct the input foreign Key as type Int. They are categoryId, publisherId, authorId in BookInput.

 

  input BookInput {

    title:String!

    categoryId:Int

    publisherId:Int

    authorId:Int

  }