Partial Update Mutations(GraphQL) - graphql

Question

How can I be able to update a node with only one field change and leave the rest of the fields alone?
My User Type
type User {
id: ID!
user_id: String!
username: String!
email: String!
role: Role!
isVerified: Boolean!
}
My Input Types
input UserUpdateInput {
user_id: String
username: String
email: String
password: String
role: Role
isVerified: Boolean
}
input UserWhereUniqueInput {
id: ID
user_id: String
email: String
}
My Mutation type
type Mutation {
updateUser(data: UserUpdateInput!, where: UserWhereUniqueInput): User
}
My Resolver
function updateUser(root, args, context, info){
return context.db.mutation.updateUser({
data: args.data,
where: {
id: args.where.id
}
}, info)
}
This is the request am sending on the GraphQL playground
mutation{
updateUser(
data: {
isVerified: true
}
where:{
user_id : "afc485b"
}
)
{
isVerified
}
}
This is the error am getting
{
"errors": [
{
"message": "Cannot read property 'mutation' of undefined",
"locations": [
{
"line": 2,
"column": 3
}
],
"path": [
"updateUser"
],
"extensions": {
"code": "INTERNAL_SERVER_ERROR",
"exception": {
"stacktrace": [
"TypeError: Cannot read property 'mutation' of undefined"
Someone help me. What am I missing?
After updating my server as suggested by Daniel Rearden on the answer section, am getting a new error
{
"message": "Cannot read property 'updateUser' of undefined",
"locations": [
{
"line": 2,
"column": 3
}
],
"path": [
"updateUser"
],
"extensions": {
"code": "INTERNAL_SERVER_ERROR",
"exception": {
"stacktrace": [
"TypeError: Cannot read property 'updateUser' of undefined"

Answer 1

The error is the result of not correctly adding the db property to you context. Assuming you're still using version 1, your code should look something like this:
const { prisma } = require('./generated/prisma-client')
const server = new ApolloServer({
...
context: {
db: prisma,
},
})

Answer 2

First thing I notice is you GQL query is not correct.
Yours:
mutation{
updateUser(
data: {
isVerified: true
}
where:{
user_id : "afc485b"
}
)
{
isVerified
}
}
after the word "mutation" you set a name to the call, i.e.
"UpdateUser" but can literally be anything. for each part of the
where clause you need to make the check value an object, i.e.
where: { myProperty: {eq: "some value"}}
So your query should be more like this:
mutation UpdateUser {
updateUser(
data: {isVerified: true}
where:{user_id : {eq: "afc485b"}}
)
{
isVerified
}
}
Hope that helps a little... I didn't fully read the rest but thought this would help with the initial error you were getting.