! means it’s a required field[] means it’s a list (like an array)ID is automatically generatedquery, mutation and subscriptionquery lets you read data (the R of CRUD)mutation lets you create, update and delete data (the C, U, and D of CRUD)subscription lets you subscribe to realtime updates and keep receiving data whenever an event occurs (e.g. a mutation) 1# TYPES
2# a type called Person for creating user objects
3type Person {
4 id: ID!
5 name: String!
6 age: Int!
7 posts: [Post!]!
8}
9
10type Post {
11 title: String!
12 author: Person!
13}
14
15# Query type to retrieve a list of Person
16type Query {
17 allPersons(last: Int): [Person!]! # return a list of all users, can accept a `last` parameter to only show last X no. of Persons created
18 allPosts(last: Int): [Post!]!
19}
20
21# Mutation type to create/update/delete a Person
22type Mutation {
23 createPerson(name: String!, age: Int!): Person! # return a single person object, created by this mutation
24 updatePerson(id: ID!, name: String!, age: Int): Person!
25 deletePerson(id: ID!): Person! # delete the Person having the provided `id`
26 # add CUD for posts here..
27}
28
29# Subscription type to subscribe to the events of Person being created/updated/deleted
30type Subscription {
31 newPerson: Person!
32 updatedPerson: Person!
33 deletedPerson: Person!
34 # add events for post here..
35}
1# QUERIES
2{
3 allPersons {
4 id
5 name
6 age
7 }
8}
9
10mutation {
11 createPerson(name: "Henry", age: 32) {
12 id
13 }
14}
15
16subscription {
17 newPerson {
18 id
19 name
20 age
21 }
22}