How to add item into an list field? - graphql

Question

I want to add members to chatRoom member list by passing memberId to graphql mutation function. But it pop up some errors. I have attached most code that relevant to this question as below. Please help me to figure it out. I guess create: {connect } might be the cause of this issue.
//Here is Mutation function
async function addMemberToChatRoom(parent, args, context, info) {
const member = await context.prisma.users({
where: {
id: args.memberId
}
});
const chatRoom = await context.prisma.updateChatRoom({
where: {
id: args.roomId
},
data: {
users: {
create: {
{ connect: { id: args.memberId } }
}
}
}
})
return chatRoom
}
//Here is prisma datamodel
type User {
id: ID! #id
name: String!
email: String! #unique
password: String!
}
type ChatRoom {
id: ID! #id
name: String!
users: [User]!
}
type Message {
id: ID! #id
content: String!
createdAt: DateTime! #createdAt
updatedAt: DateTime! #updatedAt
}
//Here is Schema.graphql
type Query {
info: String!
users: [User!]!
}
type Mutation {
signup(email: String!, password: String!, name: String!): AuthPayload
login(email: String!, password: String!): AuthPayload
createChatRoom(name: String!): ChatRoom
addMemberToChatRoom(roomId: String!, memberId: String!): ChatRoom
}
type AuthPayload {
token: String!
user: User!
}
type User {
id: ID!
name: String!
email: String!
}
type ChatRoom {
id: ID!
name: String!
users: [User!]
}
//Here is index.js
const { GraphQLServer } = require('graphql-yoga')
const { prisma } = require('./generated/prisma-client')
const Query = require('./resolvers/Query')
const Mutation = require('./resolvers/Mutation')
// const User = require('./resolvers/User')
const resolvers = {
Query,
Mutation
}
const server = new GraphQLServer({
typeDefs: './src/schema.graphql',
resolvers,
context: request => {
return {
...request,
prisma,
}
},
tracing: true,
})
server.start(() => console.log(`Server is running on http://localhost:4000`))
//Here is error
{
"data": {
"addMemberToChatRoom": null
},
"errors": [
{
"message": "Variable '$data' expected value of type 'ChatRoomUpdateInput!' but got: {\"users\":{\"create\":{\"id\":\"cjuzcf7lx75g60b953w50uwdc\"}}}. Reason: 'users.create[0].name' Expected non-null value, found null. (line 1, column 46):\nmutation ($where: ChatRoomWhereUniqueInput!, $data: ChatRoomUpdateInput!) {\n ^",
"locations": [
{
"line": 2,
"column": 3
}
],
"path": [
"addMemberToChatRoom"
]
}
]
}

Answer 1

I remove create and change it to
users:
{
connect: { id: args.memberId }
}
then it works.
async function addMemberToChatRoom(parent, args, context, info) {
const member = await context.prisma.users({
where: {
id: args.memberId
}
});
const chatRoom = await context.prisma.updateChatRoom({
where: {
id: args.roomId
},
data: {
users: {
connect: { id: args.memberId }
}
}
})
const returnedChatRoom = await context.prisma.chatRooms({
where: {
id: args.roomId
}
});
return returnedChatRoom
}