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class validator nestjs

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ShanK answered on June 19, 2021 Popularity 10/10 Helpfulness 3/10

answer class validator nestjs

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class validator nestjs

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// after `npm i --save class-validator class-transformer`
// remember to add this to your `main.ts`
app.useGlobalPipes(new ValidationPipe());

Popularity 10/10 Helpfulness 3/10 Language typescript

Source: Grepper

Tags: class-validator nestjs typescript

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Contributed on Mar 13 2023

ShanK

0 Answers Avg Quality 2/10

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validator nest js

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$ npm i --save class-validator class-transformer

Popularity 10/10 Helpfulness 5/10 Language typescript

Source: docs.nestjs.com

Tags: nest

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Contributed on Sep 17 2022

Mr.CodeKiddie

0 Answers Avg Quality 2/10

class-validator validate nested object

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import {
  MinLength,
  MaxLength,
  IsNotEmpty,
  ValidateNested,
  IsDefined,
  IsNotEmptyObject,
  IsObject,
  IsString,
} from 'class-validator';
import { Type } from 'class-transformer';

class MultiLanguageDTO {
  @IsString()
  @IsNotEmpty()
  @MinLength(4)
  @MaxLength(40)
  en: string;

  @IsString()
  @IsNotEmpty()
  @MinLength(4)
  @MaxLength(40)
  ar: string;
}

export class VideoDTO {
  @IsDefined()
  @IsNotEmptyObject()
  @IsObject()
  @ValidateNested()
  @Type(() => MultiLanguageDTO)
  name!: MultiLanguageDTO;
}

Popularity 10/10 Helpfulness 4/10 Language typescript

Source: stackoverflow.com

Tags: class-validator

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Contributed on Jun 20 2021

DevPedrada

0 Answers Avg Quality 2/10

validator nest js

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$ npm i --save class-validator class-transformer

Popularity 10/10 Helpfulness 1/10 Language typescript

Source: docs.nestjs.com

Tags: nest

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Contributed on Sep 17 2022

Mr.CodeKiddie

0 Answers Avg Quality 2/10

validator nest js

Comment

$ npm i --save class-validator class-transformer

Popularity 10/10 Helpfulness 1/10 Language typescript

Source: docs.nestjs.com

Tags: nest

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Contributed on Sep 17 2022

Mr.CodeKiddie

0 Answers Avg Quality 2/10

nest custom class validator

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useContainer(app.select(AppModule), { fallbackOnErrors: true });

@ValidatorConstraint({ name: 'UserExists', async: true })
@Injectable()
export class UserExistsRule implements ValidatorConstraintInterface {
  constructor(private usersRepository: UsersRepository) {}

  async validate(value: number) {
    try {
      await this.usersRepository.getOneOrFail(value);
    } catch (e) {
      return false;
    }

    return true;
  }

  defaultMessage(args: ValidationArguments) {
    return `User doesn't exist`;
  }
}

export function UserExists(validationOptions?: ValidationOptions) {
  return function (object: any, propertyName: string) {
    registerDecorator({
      name: 'UserExists',
      target: object.constructor,
      propertyName: propertyName,
      options: validationOptions,
      validator: UserExistsRule,
    });
  };
}

Popularity 10/10 Helpfulness 1/10 Language typescript

Source: dev.to

Tags: class-validator

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Contributed on Jun 19 2021

DevPedrada

0 Answers Avg Quality 2/10

class validator nestjs

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