将这个 dto 实例再次通过 class-transformer 包的 classToPlain 函数将 dto 实例转化成普通对象 controller 方法收到相应参数 当然了,这是nestjs借助了ValidationPipe使用class-validator和calss-transformer,我们也可以自定义pipe来使用这两个包。 以上便是nestjs中如何使用class-validator和class-transformer,希望对你有...
首先,确保你已经在项目中安装了class-validator和class-transformer库。你可以使用以下命令进行安装: 代码语言:txt 复制 npm install class-validator class-transformer 创建一个DTO(数据传输对象)来定义你的嵌套对象。在DTO中,你可以使用@ValidateNested()和@Type()装饰器来指定验证规则。例如: 代码语言:txt 复制 impo...
class-validator随笔 class-validator源码地址 通过自定义一个全局的validation pipe,结合class-validator来做参数校验。 nest官网对class-validator一笔带过。本篇整理一些常用的方法。 dto 需要自行了解dto 常用的 IsDefined 字符串类型的判断 IsNumberString 字符串"1",可以符合条件。数字1却不行。 注意,错误的message...
示例代码如下: import{ Type } from'class-transformer';import{ IsNumber, IsString, ValidateNested } from'class-validator';classAddress{@IsString()addressName: string;@IsNumber()addressCode: number; }classUser{@IsString()userName: string;@ValidateNested()@Type(() => Address)address: Address; } ...
NestJS module db class validator. Latest version: 2.0.0, last published: 2 years ago. Start using nestjs-class-validator-db in your project by running `npm i nestjs-class-validator-db`. There are no other projects in the npm registry using nestjs-class-v
import { IsNotEmpty, IsString } from 'class-validator'; export class SignupUserDto { @IsString() @IsNotEmpty() username: string; password?: string; } 上面的password是非必填,按照上面的写法,如果填了password,controller中拿不到password的值。 只有加上一个注解才可以。加上注解如果不传,又会提示...
class-validator": "^0.13.1", "express": "^4.15.2", "reflect-metadata": "^0.1.13", "rxjs": "~7.5.0", "tslib": "^2.3.0", "zone.js": "~0.11.4" }, "devDependencies": { "@angular-devkit/build-angular": "~13.2.5", "@angular/cli": "~13.2.5", "@angular/compiler-cli"...
nodejsmysqldockerredistemplateboilerplatejwtexpresstypescriptdocker-composesentrytypeormexpress-boilerplatelayered-architectureclass-validatorclass-transformermodule-alias UpdatedJul 8, 2023 TypeScript AnandChowdhary/prisma-class-validator Star3 🏭 class-decorator 是一个类装饰器工具库,提供了类的验证、组装、转...
class-validator检验嵌套参数 问题背景 本⼈使⽤的是nestjs框架，参数检验部分使⽤class-validator进⾏常见的验证，包括类型检验、值检验等。但当参数为嵌套对象时，如果使⽤常规的IsObject注解会⽆法检验到嵌套结构的内部。结构如下：class Address { @IsString()addressName: string;@IsNumber()addressCode:...
"class-transformer": "^0.5.1", "class-validator": "^0.14.0", "config": "^3.3.9", "cross-env": "^7.0.3", "dotenv": "^16.3.1", "joi": "^17.9.2", "js-yaml": "^4.1.0", "lodash": "^4.17.21", "mysql2": "^3.4.5", "nest-winston": "^1.9.3", "passport": "^...