Number validation decorators 数字验证装饰器 修饰器描述(英文)描述(中文) @IsDivisibleBy(num: number) Checks if the value is a number that’s divisible by another. 是否是可以被另一个数整除的数 @IsPositive() Checks if the value is a positive number greater than zero. 是否是大于0的整数 @Is...
import{registerDecorator,ValidationOptions,ValidationArguments}from'class-validator';exportfunctionIsLongerThan(property:string,validationOptions?:ValidationOptions){returnfunction(object:Object,propertyName:string){registerDecorator({name:'isLongerThan',target:object.constructor,propertyName:propertyName,constraints:[...
Please note that nested object must be an instance of a class, otherwise @ValidateNested won't know what class is target of validation.Check also Validating plain objects. 意思是嵌套的对象必须是一个明确的class类,如果不定义的话,ValidateNested是无法知道检验对象的。此时需要根据提示查看Validating plain...
property: string; // Object's property that haven't pass validation. value: any; // Value that haven't pass a validation. constraints?: { // Constraints that failed validation with error messages. [type: string]: string; }; children?: ValidationError[]; // Contains all nested validation...
The ValidationContext object that is passed into each validation method contains information about the current validation processing. This information includes the errors, warnings, and messages that accumulated in the validation methods that have already run....
MySQL,但是只能说是基础,因为很多功能我们都没有实现,今天实现的功能是对前台传入的字段进行验证。 说白一点,就是一个接口,必定有必填字段和字段的要求,如果前台调用这个接口,字段不符合,应正确提示不符合的字段,class-validator 用于入的数据验证。 1 项目安装 ...
This class enforces validation, based on the metadata that is associated with the data table. You can override this class to create custom validation attributes. Constructors Properties Methods Applies to ProductVersions .NETCore 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1...
ClassNotFoundException ClassNotFoundException这个错误，比较常见也好理解。 原因：就是找不到指定的...
Message Gets an alphanumeric message that provides information about the validation error. PropertyName Gets the alphanumeric name of the property that generated the error. Source Gets the activity that is the source of the error. SourceDetail Gets the detail about the source of the error.Meth...
Initializes a new instance of theValidationAttributeclass by using the function that enables access to validation resources. ValidationAttribute(String) Initializes a new instance of theValidationAttributeclass by using the error message to associate with a validation control. ...