take-if.validator.ts

take-if.validator.ts

export function TakeIf<T>(func: (data: T) => boolean, validationOptions?: ValidationOptions) {
  return (object: T, propertyName: string) => {
    const args: ValidationMetadataArgs = {
      validationOptions,
      propertyName,
      type: ValidationTypes.CONDITIONAL_VALIDATION,
      target: object.constructor,
      constraints: [(obj: any, _: any) => {
        const isOptional = func(obj);

        if (!isOptional) {
          delete obj[propertyName];
        }
        return isOptional;
      }],
    };
    getFromContainer(MetadataStorage).addValidationMetadata(new ValidationMetadata(args));
  };
}

@TakeIf((data) => data.isActive === false)