如何向TypeORM实体注入NestJS配置？

import { SetMetadata } from '@nestjs/common';

export const InjectConfig = (configKey: string) => SetMetadata('configKey', configKey);

import { Entity, Column, PrimaryGeneratedColumn } from 'typeorm';
import { InjectConfig } from './inject-config.decorator';

@Entity()
export class User {
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  name: string;

  @InjectConfig('database')
  @Column()
  database: string;
}

import { Injectable } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { TypeOrmModuleOptions, TypeOrmOptionsFactory } from '@nestjs/typeorm';

@Injectable()
export class TypeOrmConfigProvider implements TypeOrmOptionsFactory {
  constructor(private readonly configService: ConfigService) {}

  createTypeOrmOptions(): TypeOrmModuleOptions {
    return {
      type: 'mysql',
      host: this.configService.get('database.host'),
      port: this.configService.get('database.port'),
      username: this.configService.get('database.username'),
      password: this.configService.get('database.password'),
      database: this.configService.get('database.name'),
      entities: [__dirname + '/../**/*.entity{.ts,.js}'],
      synchronize: true,
    };
  }
}

import { Module } from '@nestjs/common';
import { ConfigModule } from '@nestjs/config';
import { TypeOrmModule } from '@nestjs/typeorm';
import { TypeOrmConfigProvider } from './typeorm-config.provider';
import { User } from './user.entity';

@Module({
  imports: [
    ConfigModule.forRoot(),
    TypeOrmModule.forRootAsync({
      useClass: TypeOrmConfigProvider,
    }),
    TypeOrmModule.forFeature([User]),
  ],
})
export class AppModule {}