Mutations

A brief look on how mutations for this project looks like. In case you want to know what mutations are within GraphQL you can check this link

Mutation declaration#

Field	Type
addBook	Book
addAuthor	Author

addBook#

type: Book#

Argument	Type	Required
name	GraphQLString	true
genre	GraphQLString	true
authorId	GraphQLID	true

addAuthor#

type: Author#

Argument	Type	Required
name	GraphQLString	true
age	GraphQLInt	true

You can find the mutation declaration here. This is an example on how it looks like:

const Mutation = new GraphQLObjectType({
    name: 'Mutation',
    fields: {
        addAuthor: {
            type: AuthorType,
            args: { 
                name: { type: new GraphQLNonNull(GraphQLString) },
                age: { type: new GraphQLNonNull(GraphQLInt) },
            },
            resolve(parent, args) {
                const author = new Author({
                    name: args.name,
                    age: args.age,
                });
                // Mongo DB save
            }
        },
        addBook: {
            type: BookType,
            args: {
                name: { type: new GraphQLNonNull(GraphQLString) },
                genre: { type: new GraphQLNonNull(GraphQLString) },
                authorId: { type: new GraphQLNonNull(GraphQLID) },
            },
            resolve(parent, args) {
                const book = new Book({
                    name: args.name,
                    genre: args.genre,
                    authorId: args.authorId
                });
                // Mongo DB save
            }
        },
    },
});