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, ...
}from'class-validator'// Implementing the validator:@ValidatorConstraint()exportclassCustomTextLengthimplementsValidatorConstraintInterface{validate(text:string,validationArguments:ValidationArguments){const[min,max]=validationArguments.constraintsreturntext.length>=min&&text.length<=max}}// ...and putting it t...
使用class-validator进行验证 首先,安装class-validator和class-transformer(用于对象转换): npm installclass-validatorclass-transformer 然后,定义验证类和验证逻辑: import{validate,ValidationArguments,ValidatorConstraint,ValidatorConstraintInterface}from'class-validator';classUserDto{@IsString()@IsNotEmpty()username!:...
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...
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...
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: classAddress{@IsString()addressName: string;@IsNumber()addressCode: number; ...
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-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...
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, ...
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, ...