npm install class-validator --saveNote: Please use at least npm@6 when using class-validator. From npm@6 the dependency tree is flattened, which is required by class-validator to function properly.UsageCreate your class and put some validation decorators on the properties you want to validate:...
class-validatorallows you to definecustom validation classes. You might for example validate that a string's length is between given two values: import{Validate,ValidationArguments,ValidatorConstraint,ValidatorConstraintInterface,}from'class-validator'// Implementing the validator:@ValidatorConstraint()exportc...
Class-validaotr 有一个 npm 包叫class-validator, 是采用注解的方式进行校验,底层使用的是老牌的校验包validator.js。 这次试用,发现通过一些小包装,居然做到像 Joi 一样优雅的写法,而且更好用! 定义传入 /返回结构 import {Length, Min, Max} from 'class-validator' export class IRegister {@Length(11) p...
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()、@IsNumber()等。例如,如果要验证一个环境变量为字符串类型,可以使用@IsString()装饰器。 创建一个DTO(Data Transfer Object)类,用于描述你想要验证的环境变量。DTO类可...
npm install class-validator class-transformer -S 然后在xxxx.dto.ts文件中添加验证, 完善错误信息提示: 代码语言:ts AI代码解释 import { IsNotEmpty, IsNumber, IsString } from 'class-validator'; export class CreatePostDto { @ApiProperty({ description: '文章标题' }) @IsNotEmpty({ message: '文章...
查看class-validator的npm网站,其中插件特性介绍中是有关于nest结构(嵌套结构)的说明: 点击上图中的链接,查看相关内容如下: 此时是不是好像看到了希望的曙光,但按照上述方式进行代码编写,你会发现依旧无法生效。再次查看说明,其中一句话非常重要: Please note that nested object must be an instance of a class, ...
class-validator是一个用于验证输入数据的库,可以用于验证类的属性、方法参数等。 使用class-validator需要先安装相应的依赖包: ``` npm install class-validator class-transformer --save ``` 然后在需要验证的类中,使用相应的装饰器来标记需要验证的属性。 例如,要验证一个User类中的name属性是否为空: ```type...
npm install class-validator --saveNote: Please use at least npm@6 when using class-validator. From npm@6 the dependency tree is flattened, which is required by class-validator to function properly.UsageCreate your class and put some validation decorators on the properties you want to validate:...
npm install class-validator --save Note: Please use at least npm@6 when using class-validator. From npm@6 the dependency tree is flattened, which is required by class-validator to function properly.UsageCreate your class and put some validation decorators on the properties you want to validate...
From npm@6 the dependency tree is flattened, which is required by class-validator to function properly.UsageCreate your class and put some validation decorators on the properties you want to validate:import { validate, validateOrReject, Contains, IsInt, Length, IsEmail, IsFQDN, IsDate, Min, ...