How to select a custom User model property? - postgresql

Question

I added a company property to the User model in my prisma.schema file (The rest of the prisma.schema file is still similar to the one in the documentation: https://next-auth.js.org/adapters/prisma)
model User {
id String #id #default(cuid())
name String?
email String? #unique
emailVerified DateTime?
image String?
accounts Account[]
sessions Session[]
company Company?
}
model Company {
id Int #id #default(autoincrement())
companyName String #unique
gender String
firstName String
lastName String
street String
houseNumber Int
postcode Int
city String
country String
countryCode String
callNumber Int
emailAddress String
website String?
socials Json?
companyUser User #relation(fields: [companyUserId], references: [id])
companyUserId String #unique
}
The whole authentification process is working fine even after the change but when I try to select a User from the database it only returns a certain portion of the User namely the id, name, email, emailVerified and image property.
How can I change this behaviour?
const user = await prisma.user.findUnique({
where: {
id: ...
}
})
For sure I could only create the Company model without connecting it to the User model and maybe adding the User's id to it to have an implicit connection, but that's undermining the whole purpose...

Answer 1

you're looking for nested reads, if you want to include the whole company model you should use include with the name of the relation, note that this will return all the fields for that specific relation:
const user = await prisma.user.findUnique({
where: {
id: ...
},
include: {
company: true,
},
})
if you want to return specific relation fields with the whole user you should use select inside include:
const user = await prisma.user.findUnique({
where: {
id: ...
},
include: {
company: {
select : {
firstName: true,
},
},
},
})