GraphQL queries — examples for begginers

No words, only code from dummy NestJS app.

client.resolver.ts:

@Query(returns => ClientDto, { nullable: true, name: ‘getClient’ }) 
async getClient(@Args(‘id’) id: string) {
   return this.clientService.findById(id);
}
@Mutation(returns => ClientDto, { name: 'createClient' })
async createClient(@Args('client') client: ClientInputDto) {
   return this.clientService.create(client as ClientEntity);
}
@Mutation(returns => ClientDto, { name: 'updateClient' })
async updateClient(
   @Args('id') id: string,
   @Args('client') client: ClientInputDto,
) {
  return this.clientService.update(id, client);
}

schema.gql (code first)

type ClientDto {
   name: String!
   signUpDate: DateTime!
}
"""
A date-time string at UTC, such as 2019-12-03T09:54:33Z, compliant with the date-time format.
"""
scalar DateTime
type Query {
   client(id: String!): ClientDto
}
type Mutation {
   createClient(client: ClientInputDto!): ClientDto!
   updateClient(client: ClientInputDto!, id: String!): ClientDto!
}
input ClientInputDto {
   name: String!
}

queries

mutation {
   createClient(client: {name: "Olena"}) {name, signUpDate}
}
mutation {
  updateClient(
    client: {name: "Olena Yedyharova"},
    id: "5ed551240592ba0569aa2751") {name, signUpDate}
}
query {
   client(id: "5ed551240592ba0569aa2751") {name, signUpDate}
}

just a pic

Repo