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...
在NestJS中使用class-validator验证环境变量,可以通过以下步骤: 首先,确保你已经安装了class-validator和class-transformer模块。可以通过执行以下命令进行安装: 代码语言:txt 复制 npm install class-validator class-transformer 在要使用验证的地方,比如一个Controller中,引入class-validator的相关装饰器,如@IsString...
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; } ...
NOTE If you use class-validator together with class-transformer you propably DON'T want to enable this function. Enables automatic conversion between built-in types based on type information provided by Typescript. Disabled by default. import { IsString } from 'class-validator'; class MyPayload...
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。
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
Is there an existing issue for this? I have searched the existing issues Current behavior Note This is an issue opened by a class-validatior maintainer to raise awareness of the latest breaking change in the class-validator@0.14.0 versio...
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"...
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:...