Understanding queries and mutations in GraphQL
Queries and mutations are vital in GraphQL because they are the only way to access or send data to the GraphQL server from your frontend.
Using queries
GraphQL queries define all the queries that a client can run on the GraphQL API. If you’re familiar with REST APIs, it is synonymous with the popular GET requests.
You can define GraphQL queries in many ways, but defining a root query to wrap all your queries is recommended.
The following code snippet shows you how to define a root query called RootQuery:
type RootQuery {
user(id: ID): User # Corresponds to GET /api/users/:id
users: [User] # Corresponds to GET /api/users
photo(id: ID!): Photo #Corresponds to GET/api/photos/:id
photos: [Photo] # Corresponds to GET /api/photos
}
You can also define...