我的项目中有两个数据库连接,因此我不得不按照文档中的建议命名其中之一。使用该命名连接的模块无法解析实体存储库的依赖关系,也无法找到原因。
我相信这与连接的“命名”有关,因为当我命名主连接时,其他存储库也存在相同的问题。
感谢任何帮助!
错误:
Nest can't resolve dependencies of the DataFactService (?). Please make sure that the argument DataFactRepository at index [0] is available in the DataFactModule context.
Potential solutions:
- If DataFactRepository is a provider, is it part of the current DataFactModule?
- If DataFactRepository is exported from a separate @Module, is that module imported within DataFactModule?
@Module({
imports: [ /* the Module containing DataFactRepository */ ]
})
该模块:
@Module({
imports: [TypeOrmModule.forFeature([DataFact], 'sumarized')],
controllers: [DataFactController],
providers: [DataFactService],
})
export class DataFactModule {}
服务:
@Injectable()
export class DataFactService {
constructor(
@InjectRepository(DataFact)
private dataFactRepository: Repository<DataFact>,
) {}
}
数据库连接
@Module({
imports: [
TypeOrmModule.forRootAsync({
name: 'sumarized',
imports: [ConfigModule],
inject: [ConfigService],
useFactory: (configService: ConfigService) => ({
synchronize: false,
type: 'mysql',
host: configService.get('DB_HOST'),
port: configService.get('DB_PORT'),
username: configService.get('DB_USER'),
password: configService.get('DB_PASSWORD'),
database: configService.get('DB_SUMARIZED_DATABASE'),
entities: [__dirname + '/../**/*.entity.{js,ts}'],
}),
}),
],
})
export class SumarizedDatabaseModule {}
应用模块:
@Module({
imports: [
ConfigModule.forRoot({
envFilePath: `.env.${process.env.NODE_ENV}`,
isGlobal: true,
}),
WinstonModule.forRoot(winstonConfig),
UsersModule,
AuthModule,
StoresEventsModule,
StationsModule,
DatabaseModule,
MailerModule,
SumarizedDatabaseModule,
DataFactModule,
SumarizedEventsModule,
],
controllers: [],
providers: [
{
provide: APP_INTERCEPTOR,
useClass: LoggerInterceptor,
},
],
})
export class AppModule {}
@InjectRepository(EntityClass, databaseName)
如果要从连接而非默认注入实体,则需要使用。这是在文档中提到的
使用此设置,您必须告诉
TypeOrmModule.forFeature()
方法和@InjectRepository()
装饰器应使用哪个连接。如果未传递任何连接名称,则使用默认连接。
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我来说两句