Prisma.service.ts
import { Injectable, OnModuleDestroy, OnModuleInit } from '@nestjs/common'
import { PrismaClient } from '@prisma/client'
@Injectable()
export class PrismaService
extends PrismaClient
implements OnModuleInit, OnModuleDestroy
{
constructor() {
super({
log: ['warn', 'error'],
})
}
onModuleInit() {
return this.$connect()
}
onModuleDestroy() {
return this.$disconnect()
}
}
users-repository.ts
import { UserRepository } from "src/application/repositories/users-repository";
import { PrismaService } from "../prisma.service";
import { CreateUserDTO, FindUserDTO, UpdateUserDTO } from "src/core/dtos/user.dto";
import { User, UserWithoutPassword } from "src/core/entities/user.entity"
export class PrismaUserRepository implements UserRepository {
constructor(private prisma: PrismaService) { }
async create(user: CreateUserDTO): Promise<User> {
const createdUser = await this.prisma.user.create({ data: user })
if (createdUser) {
return null;
}
return createdUser;
}
}
abstract-user-repository.ts
import { User, UserWithoutPassword } from 'src/core/entities/user.entity';
import {CreateUserDTO, FindUserDTO, UpdateUserDTO} from '../../core/dtos/user.dto'
export abstract class UserRepository {
abstract create(user: CreateUserDTO): Promise<User | null>
abstract findByEmail(email: string): Promise<User | null>
abstract findAll(query: FindUserDTO): Promise<UserWithoutPassword[]>
abstract findOne(id: string): Promise<UserWithoutPassword | null>
abstract update(id: string, user: UpdateUserDTO): Promise<UserWithoutPassword | null>
abstract remove(id: string): Promise<UserWithoutPassword | null>
}
database.module.ts
import { Module } from "@nestjs/common";
import { PrismaService } from "./prisma/prisma.service";
import { UserRepository } from "../../application/repositories/users-repository";
import { PrismaUserRepository } from "./prisma/repositories/users-repository";
@Module({
providers: [
PrismaService,
{
provide: UserRepository,
useClass: PrismaUserRepository,
},
],
exports: [
UserRepository
],
})
export class DatabaseModule { }
While attempting to initialize a user creation process, an error message is displayed stating that the prisma object is undefined.
TypeError: Cannot read properties of undefined (reading 'user') at PrismaUserRepository.create (\src\infra\database\prisma\repositories\users-repository.ts:13:47)I meticulously investigated the imports and cross-checked for any missing nestJS decorators without identifying any discrepancies. Additionally, I ensured that Prisma was properly connected during npm startup.