并使用 PostgreSQL 数据库作为数据存储，并围绕它设置一些工具，使开发更容易上手。
findOne 用于查找单个实体,和find类似,只是会返回符合条件的一个实体或者null findOneBy 查询指定where条件的单个实体 findAndCount 和find类似查询实体,并给出这些实体的总数,在分页查询中较常使用 findAndCountBy 更直接的where条件查询方法 update 通过执行的条件来更新对应实体的数据,不检查记录是否存在 remove 删除 ...
check to see if object is empty and use findOneif(isEmpty(filters){returnthis.findOne();//}else{// some logic to transform `null` to IsNull`filters=Object.entries(filters).reduce((acc,[key,value])=>{acc[key]=value===null?IsNull():value;returnacc;},{});returnthis.findOneBy(...
constuser=newUser()user.firstName="Timber"user.lastName="Saw"user.age=25awaituser.save()constallUsers=awaitUser.find()constfirstUser=awaitUser.findOneBy({id:1,})consttimber=awaitUser.findOneBy({firstName:"Timber",lastName:"Saw"})awaittimber.remove() Installation Install the npm package: npm...
findByName(firstName: string, lastName: string) { return this.findOne({ where: { firstName, lastName }, }); } findActiveUsers() { return this.find({ where: { isActive: true }, }); } } // 使用自定义 Repository const userRepository = AppDataSource.getCustomRepository(UserRepository)...
findOne(1); // find by idconst timber = await repository.findOne({ firstName: "Timber", lastName: "Saw" });await repository.remove(timber); 或者,如果你更喜欢使用ActiveRecord实现,也可以这样用: import { Entity, PrimaryGeneratedColumn, Column, BaseEntity } from "typeorm";@Entity()export ...
findOne({ firstName: "Timber" });findOneOrFail - - findOneOrFail - 查找匹配某些 ID 或查找选项的第一个实体。 如果没有匹配,则 Rejects 一个 promise。 const user = await repository.findOneByOrFail({ id: 1 });const timber = await repository.findOneOrFail({ firstName: "Timber" });...
findOne - 查找匹配某些 ID 或查找选项的第一个实体。constuser =awaitrepository.findOne(1);consttimber =awaitrepository.findOne({ firstName:"Timber"}); find查询选项 select - 表示必须选择对象的哪些属性 userRepository.find({select: ["firstName","lastName"] }); ...
find() const firstUser = await userRepository.findOneBy({ id: 1, }) // find by id const timber = await userRepository.findOneBy({ firstName: "Timber", lastName: "Saw", }) // find by firstName and lastName await userRepository.remove(timber)...
return this.findOneById(id); } /** * 根据ID查询单个信息,如果不存在则抛出404异常 * @param id ID */ private async findOneById(id: number): Promise<Cat> { const catInfo = await this.catRepo.findOne(id); if (!catInfo) { throw new HttpException(`指定 id=${id} 的猫猫不存在`, 404...