How can I add properties to the mutation successful response - graphql

Question

I am new to graphql-spqr so I hope this is an easy question, however I couldn't find a solution for this, even after a long search.
Hint: In my app, I use the code-first/schema-last approach, which I like about the graphql-spqr, so there is no schema.graphqls loaded from a file.
My User.java starts with this
#Table(name = "users")
#Entity
#Setter
#Getter
#EntityListeners(AuditingEntityListener.class)
public class User {
#Id
#GraphQLQuery(name = "id", description = "A user's id")
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "id", nullable = false, updatable = false)
public Long id;
#GraphQLQuery(name = "firstName", description = "User's first name")
#Column(name = "first_name")
public String firstName;
#GraphQLQuery(name = "lastName", description = "User's last name")
#Column(name = "last_name")
public String lastName;
#GraphQLQuery(name = "email", description = "User's email")
public String email;
#GraphQLQuery(name = "uuid", description = "User's uuid")
//#Type(type = "char")
public String uuid;
//#Type(type = "char")
#Transient
public Company company;
#Column(name = "company")
public Long companyId;
#Transient
public Role role;
#Column(name = "role")
public Long roleId;
#Column(name = "pw")
public String password;
#GraphQLQuery(name = "terms", description = "User accepted terms")
public Boolean terms;
#Transient
public String token;
#CreatedDate
public Instant created;
public String getUuid() {
return this.uuid;
}
public String getFirstName() {
return this.firstName;
}
public String getLastName() {
return this.lastName;
}
public String getEmail() {
return this.email;
}
public String getPassword() {
return this.password;
}
}
A user is created by a mutation:
#GraphQLMutation(name = "createUser")
public User createUser (
#GraphQLArgument(name = "firstName") String firstName,
#GraphQLArgument(name = "lastName") String lastName,
#GraphQLArgument(name = "email") String email,
#GraphQLArgument(name = "password") String password,
#GraphQLArgument(name = "company") String company,
#GraphQLArgument(name = "terms") Boolean terms) throws UserExistsException {
... some business logic
... and finally I use the JpaRepository<User, String> to save the user
return userRepository.save(user);
}
This is the query I am sending to the server
{"operationName":"CreateUser","variables":{"firstName":"Chris","lastName":"Rowing","email":"foo54#bar.com","password":"dada","company":"Test 5","terms":true,"source":"start","invitationId":null},"query":"mutation CreateUser($firstName: String!, $lastName: String!, $email: String!, $password: String!, $terms: Boolean!, $company: String) {\n createUser(\n firstName: $firstName\n lastName: $lastName\n email: $email\n password: $password\n terms: $terms\n company: $company\n ) {\n id\n __typename\n }\n}\n"}
The new user gets saved in the DB, everything works fine, and in my Angular client I listen to the success event, and in the inspector there is the following output
{"data":{"createUser":{"id":4,"__typename":"User"}}}
My question
How can I customize the response? For example I need to respond also a JWT token, and maybe hide the id. I have not found a way to do this up to now and any help would be appreciated! Thanks!

Answer 1

For anyone who is experiencing the same newbie problem: This is how I solved it:
I added the token property to the GraphQL query, removed the id property, and added this to the UserService
// Attach a new field called token to the User GraphQL type
#GraphQLQuery
public String token(#GraphQLContext User user) {
return authService.createToken(user.email, user.uuid);
}
It is possible to add external fields to the response without changing the original User.class by using #GraphQLContext