P
Prisma•2w ago
Werdox

How to query for is:{null} OR {something: true}

When I want to update a record in a table, for the where I need to query for a related object and I need to say if the related object does not exist (is null) or a property on the related object is something psudo code 
prisma.channel.update({where: {lastMessage: { OR: [ {is: null}, {someproperty: true} ] } }, data: {...}})
prisma.channel.update({where: {lastMessage: { OR: [ {is: null}, {someproperty: true} ] } }, data: {...}})
but the OR does not allow me to put is in it...
4 Replies
Nurul
Nurul•2w ago
Hey 👋 In your case, is lastMessage a relation field of is it a composite type? Do you mind sharing the channel model so that I can better understand your usecase?
Composite types | Prisma Documentation
Composite types
Nurul
Nurul•2w ago
Assuming this model: 
model Channel {
  id          String   @id @default(cuid())
  name        String
  lastMessage Message?
}

model Message {
  id        String   @id @default(cuid())
  text      String
  createdAt DateTime
  channel   Channel  @relation(fields: [channelId], references: [id])
  channelId String   @unique
  isRead    Boolean  @default(false)
}
model Channel {
  id          String   @id @default(cuid())
  name        String
  lastMessage Message?
}

model Message {
  id        String   @id @default(cuid())
  text      String
  createdAt DateTime
  channel   Channel  @relation(fields: [channelId], references: [id])
  channelId String   @unique
  isRead    Boolean  @default(false)
}
This query works for me: 
  const result = await prisma.channel.updateMany({
    where: {
      OR: [
        {
          lastMessage: null,
        },
        {
          lastMessage: {
            isRead: true,
          },
        },
      ],
    },
    data: {
      name: 'Updated Channel Name',
    },
  });
  const result = await prisma.channel.updateMany({
    where: {
      OR: [
        {
          lastMessage: null,
        },
        {
          lastMessage: {
            isRead: true,
          },
        },
      ],
    },
    data: {
      name: 'Updated Channel Name',
    },
  });
Werdox
WerdoxOP•2w ago
Ohhh yea I was dumb. Thank you.
Nurul
Nurul•2w ago
No worries! I am glad to be able to help 🙂

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