import { IsString, IsInt, ValidateNested, IsArray } from 'class-validator'; class NestedObjectDTO { @IsString() name: string; @IsInt() age: number; } class MainDTO { @IsArray() @ValidateNested({ each: true }) nestedObjects: NestedObjectDTO[]; } 在上面的例子中,NestedObjectDTO定义了...
} 启动项目,用postman测试后发现并不好使,传了array类型的数据又要求是string类型,传了string类型的数据又要求是array类型。 注意:嵌套类型的对象验证需要使用@ValidateNested和@Type注解, @Type接受一个回调函数,函数内部需要返回一个用class声明的dto类。 解决方案 经过一番求助,翻了一圈class-validator的文档,发现没...
: ValidationOptions) { return (object: any, propertyName: string) => { registerDecorator({ name: 'IsNonPrimitiveArray', target: object.constructor, propertyName, constraints: [], options: validationOptions, validator: { validate(value: any, ...
如我所料,考虑以下几点: class SomeNestedObject { @IsString() someProp: string; } class ProjectLocation { @IsString() longitude: string; @IsString() latitude: string; @ValidateNested() @IsNotEmpty() @Type(() => SomeNestedObject) someNestedObject: SomeNestedObject; } export class CreatePro...
@ValidateIf((object: any, value: any)=> !!value)//如果next Id为空或者是uuidpublic next: string; @IsUUID('all', { message: 'timeline的id不合法'}) @ValidateIf((object: any, value: any)=> !!value)//如果next Id为空或者是uuidpublic timeline: string;@ValidateIf((object: any, value...
type: RemoveEssayItemDto, }) @ValidateNested({ each: true }) @IsNonPrimitiveArray() @Type(() => RemoveEssayItemDto) readonly patchs: RemoveEssayItemDto[]; }export function IsNonPrimitiveArray(validationOptions?: ValidationOptions) { return (object: any, propertyName: string) => { ...
在上面的代码中,我们定义了一个嵌套对象NestedObject,并使用@IsNotEmpty()装饰器来验证每个属性的非空性。然后,在MainObject中,我们使用@ValidateNested()和@Type()装饰器来指定嵌套对象的验证规则。 在你的控制器或服务中,使用class-validator库中的validate()函数来验证传入的数据。例如: 代码语言:txt 复制 import...
Hint To disable validation of predefined environment variables, set the validatePredefined attribute to false in the forRoot() method's options object. Predefined environment variables are process variables (process.env variables) that were set before the module was imported. For example, if you start...
A custom validate() function which takes environment variables as an input. To use Joi, we must install Joi package: $ npm install --save joi Now we can define a Joi validation schema and pass it via the validationSchema property of the forRoot() method's options object, as shown below...
Process files in nested objects Integration withclass-validator, validate files with validator decorator nestjs-form-data serializes the form-data request into an object and places it in the body of the request. The files in the request are transformed into objects. ...