我正在尝试使用NestJS和TypeORM为我的数据库设置种子。
我有一个迁移文件,它创建了一个练习
表,还有一个种子文件,它将一个练习
插入到表中。这些文件的主要区别是迁移文件直接运行查询:
public async up(queryRunner: QueryRunner): Promise<any> {
await queryRunner.query(
`CREATE TABLE ...`
);
}
当种子文件获取存储库时:
public async up(queryRunner: QueryRunner): Promise<any> {
await queryRunner.manager.getRepository<ExerciseEntity>(ExerciseEntity).save(
someExerciseEntity
);
}
这个getRepository
是产生错误的那个。
RepositoryNotFoundError: No repository for "ExerciseEntity" was found. Looks like this entity is not registered in current "default" connection?
at new RepositoryNotFoundError (C:\Users\Dev\Documents\team-management\src\error\RepositoryNotFoundError.ts:10:9)
at EntityManager.getRepository (C:\Users\Dev\Documents\team-management\src\entity-manager\EntityManager.ts:1194:19)
at SeedExercises1584903747780.<anonymous> (C:\Users\Dev\Documents\team-management\dist\apps\api\_seeds\dev\webpack:\_seeds\dev\1584903747780-SeedExercises.ts:7:31)
在一个服务中,我获得了存储库并保存了实体,没有任何问题。问题只在播种时发生。
我注册打字格式如下:
// app.module.ts
@Module({})
export class AppModule implements NestModule {
static forRoot(): DynamicModule {
return {
module: AppModule,
imports: [
ConfigModule.forRoot({
envFilePath: '.env.dev',
validationSchema: validationSchema()
}),
TypeOrmModule.forRootAsync({
imports: [ConfigModule],
inject: [ConfigService],
useFactory: async (configService: ConfigService) => databaseProviders(configService)
}),
ExercisesModule.forRoot()
]
};
}
}
哪里:
// database.provider.ts
export const databaseProviders = (configService: ConfigService) => {
const normalizePath = (_path: string) => (path.normalize(path.join(__dirname, _path)));
const commonDB: TypeOrmModuleOptions = {
type: 'sqlite',
entities: [...exercisesEntities]
};
// exerciseEntities comes from an index.ts in an exercise library
// import { ExerciseEntity } from './exercise.entity';
// export const exercisesEntities = [ExerciseEntity];
const defaultDB: TypeOrmModuleOptions = {
...commonDB,
database: path.join(
configService.get('APP_ROOT_PATH', '.'),
configService.get('TYPEORM_DATABASE', 'gym-dev.sqlite')
),
logging: configService.get<boolean>('TYPEORM_ENABLE_LOGGING', true) ? ['query', 'error'] : [],
cache: true,
synchronize: configService.get<boolean>('TYPEORM_SYNCHRONIZE', false),
migrations: [normalizePath('_migrations/*.js'), normalizePath('_seeds/dev/*.js')],
migrationsRun: configService.get<boolean>('TYPEORM_MIGRATIONS_RUN', true),
dropSchema: configService.get<boolean>('DROP_SCHEMA', false)
};
return defaultDB;
};
我正在使用nrwl/nx
使用以下网页配置编译和服务应用程序:
module.exports = function(config, context) {
const baseDirectory = path.resolve(config.output.path);
const entityPaths = ['libs/feature/api/**/entities/*.js'];
const migrationPaths = ['_migrations/*.js', '_seeds/**/*.js'];
config.entry = {
...config.entry,
...getEntityEntries(entityPaths),
...getMigrationEntries(migrationPaths)
};
// getEntries functions allows the compilation of entities and migrations
// Output
config.output = {
path: baseDirectory,
filename: '[name].js',
libraryTarget: 'commonjs'
};
return config;
};
我的dist
结构最终是:
dist
|-apps
|-api
|-_migrations // contains compiled migrations
|-_seeds // contains compiled seeders
|-lib
|-entities // contains compiled entities
|-main.js
正如在app.module.ts
中看到的,我正在使用TypeOrmModule.forRootAsync
来注入配置服务。我怀疑也许当种子被执行时,存储库还没有注册。这就解释了,在运行Web应用程序时,服务可以访问存储库。
你知道我该怎么解决这个问题吗
我的配置是否错误或缺少什么?如果问题出在播种机中,是否有办法等待存储库注册?
编辑:
它与TypeOrmModule没有任何关系。forRootAsync
。我做了以下更改:
// app.module.ts
@Module({})
export class AppModule implements NestModule {
static forRoot(): DynamicModule {
return {
module: AppModule,
imports: [
ConfigModule.forRoot({
envFilePath: '.env.dev',
validationSchema: validationSchema()
}),
TypeOrmModule.forRoot(databaseProvidersSync()),
ExercisesModule.forRoot()
]
};
}
}
// database.providers.ts
export const databaseProvidersSync = () => {
const normalizePath = (_path: string) => (path.normalize(path.join(__dirname, _path)));
const defaultDB: TypeOrmModuleOptions = {
type: 'sqlite',
entities: [...exercisesEntities],
database: path.normalize(`C:\\Users\\Dev\\Documents\\team-management\\gym-dev.sqlite`),
logging: ['query', 'error'],
cache: true,
synchronize: false,
migrations: [normalizePath('_migrations/*.js'), normalizePath('_seeds/dev/*.js')],
migrationsRun: true,
dropSchema: true
}
return defaultDB;
}
错误是一样的。
问题来自当前的TypeORM版本(0.2.24)。
我切换到0.2。22它成功了,没有改变其他任何东西。
这是我用这篇文章开始的问题,最后问他们什么时候能解决这个问题:https://github.com/typeorm/typeorm/issues/5781
这里有一些问题似乎在上一版本中讨论了这个问题:
https://github.com/typeorm/typeorm/issues/5676
本文向大家介绍arduino 播下种子,包括了arduino 播下种子的使用技巧和注意事项,需要的朋友参考一下 示例 如果重要的是要由生成的数字序列random()不同,则最好使用以下代码指定种子randomSeed():
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