NestJS Missing Dependency - node.js

Question

i'm facing an issue with NestJS :
"[Nest] 5068 - 08/11/2021, 3:12:02 PM ERROR [ExceptionHandler] Nest can't resolve dependencies of the AppService (?). Please make sure that the argument UserRepository at index [0] is available in the AppModule context."
I tried to add AppService in the imports with no luck.
How to evade this error?
app.module.ts :
import { Module } from '#nestjs/common';
import { TypeOrmModule } from '#nestjs/typeorm';
import { AppController } from './app.controller';
import { AppService } from './app.service';
import { User } from './user.entity';
#Module({
imports: [
TypeOrmModule.forRoot({
type: 'postgres',
host: 'localhost',
port: 5432,
username: 'postgres',
password: 'password',
database: 'test',
entities: [User],
synchronize: true,
}),
],
controllers: [AppController],
providers: [AppService],
})
export class AppModule { }
app.controller.ts :
import { Body, Controller, Get, Post } from '#nestjs/common';
import { AppService } from './app.service';
import * as bcrypt from 'bcrypt';
#Controller('api')
export class AppController {
constructor(private readonly appService: AppService) {
}
#Post('register')
async register(
#Body('name') name: string,
#Body('email') email: string,
#Body('password') password: string,
#Body('phone') phone: string,
) {
const hashedPassword = await bcrypt.hash(password, 12);
return this.appService.create({
name,
email,
password: hashedPassword,
phone,
})
}
}
app.service.ts :
import { Injectable } from '#nestjs/common';
import { InjectRepository } from '#nestjs/typeorm';
import { Repository } from 'typeorm';
import { User } from './user.entity';
#Injectable()
export class AppService {
constructor(
#InjectRepository(User) private readonly userRepository: Repository<User>
) {
}
async create(data: any): Promise<User> {
return this.userRepository.save(data)
}
}
user.entiry.ts :
import { Column, Entity, PrimaryColumn } from "typeorm";
#Entity('users')
export class User {
#PrimaryColumn()
id: number;
#Column()
name: string;
#Column()
email: string;
#Column()
phone: string;
#Column()
password: string;
}
Thank you

Answer 1

You need to add TypeormModule.forFeature([User]) to your imports in your AppModule to set up the #InjectRepository(User) that you make use of. With the TypeORM module, forRoot/Async is for database connection and general TypeORM configuration, forFeature is for dynamic provider setup