Prisma•5mo ago

Create prisma client with extension without circular dependency

FOUND SOLUTION: Prisma.defineExtension takes a callback which receives the client --------------- If I have something like this:

const extension = Prisma.defineExtension({
  model: {
    user: {
      // @typescript-eslint/no-use-before-define: 'db' was used before it was defined
      example: async () => { 
return await db.user.findMany() }
    }  
  }
})

const getExtendedPrismaClient = () => {
  return new PrismaClient().$extends(extension)
}

type ExtendedPrismaClient = ReturnType<typeof getExtendedPrismaClient>

const globalForPrisma = globalThis as unknown as { db: ExtendedPrismaClient }

const db = globalForPrisma.db || getExtendedPrismaClient()

export default db;

if (process.env.NODE_ENV !== "production") {
  globalForPrisma.db = db
}

const extension = Prisma.defineExtension({
  model: {
    user: {
      // @typescript-eslint/no-use-before-define: 'db' was used before it was defined
      example: async () => { 
return await db.user.findMany() }
    }  
  }
})

const getExtendedPrismaClient = () => {
  return new PrismaClient().$extends(extension)
}

type ExtendedPrismaClient = ReturnType<typeof getExtendedPrismaClient>

const globalForPrisma = globalThis as unknown as { db: ExtendedPrismaClient }

const db = globalForPrisma.db || getExtendedPrismaClient()

export default db;

if (process.env.NODE_ENV !== "production") {
  globalForPrisma.db = db
}

Essentially, I am asking how I can perform database operations before I have actually initialised the database.

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Create prisma client with extension without circular dependency