question: validate based on different type in model

Hi Im working with TypeORM and class validation, and I would like to provide different to field based on other field value. So to explain, here is how my DTO model looks like this:

import { IsString, IsOptional, IsNumber, IsEnum, IsObject, IsBoolean, ValidateNested } from 'class-validator';

export enum AttributeTypes {
    DATE = 'DATE',
    TIME = 'TIME',
    NUMBERS = 'NUMBERS',
}

export class BaseValidation {
    @IsOptional()
    @IsBoolean()
    required: boolean;
}

export class modelCreate {
    @IsOptional()
    @IsNumber()
    id: number;

    @IsOptional()
    @IsString()
    label: string;

    @IsOptional()
    @IsEnum(AttributeTypes)
    type: AttributeTypes;

    @IsOptional()
    @IsObject()
    @ValidateNested()
    validation: BaseValidation;
}

he problem here is that I have this field: validation in modelCreate, & that field is an object and can have multiple properties & can look like this in db:

validation: {
   required: true,
   text: 2
}

or it can look like this

 validation: {
       required: false,
       number: 1,
       maxNumber: 10
    }

and that would depend on type property of modelCreate, because if type is ‘TIME’, I would like to have validation for this:

BaseValidation {
    @IsBoolean()
     required: true,
    @IsString()
    text: 2
}

and if type is ‘NUMBERS’, I would like to have validation like this

 BaseValidation {
           @IsBoolean()
           required: boolean,
           @IsNumber()
           number: number,
           @IsNumber()
           maxNumber: number
        }

o the question is how would I toogle different classes in validation field based on type field value in class validator, and is that even possible ?

[HunterJS-bit]

Yes, but type its working like that if type is property inside of validation object, but for me the type should be on modelCreate 😃, nevermind this doesnt concerne class validator, @vlapo thank you ver much , closing issue.

[vlapo]

You can use groups - https://github.com/typestack/class-validator#validation-groups - example https://github.com/typestack/class-validator/issues/278#issuecomment-604675151

Or create different classes for all types. E.g.NumbersValidation, TimeValidation, DateValidation

export class modelCreate {
    @IsOptional()
    @IsNumber()
    id: number;

    @IsOptional()
    @IsString()
    label: string;

    @IsOptional()
    @IsEnum(AttributeTypes)
    type: AttributeTypes;

    @IsOptional()
    @IsObject()
    @ValidateNested()
    validation: TimeValidation | NumbersValidation | DateValidation;
}