Transform & Validate

Usage

import { Definition, Property, Thunk, Id, ObjectId } from 'dryerjs';
import { MaxLength } from 'class-validator';
import { Transform } from 'class-transformer';
 
@Definition()
export class Tag {
  @Id()
  id: ObjectId;
 
  @Thunk(MaxLength(100), { scopes: 'input' })
  @Thunk(Transform(({ value }) => value.trim()))
  @Thunk(Transform(({ value }) => value.toLowerCase()), { scopes: 'output' })
  @Property()
  name: string;
}

DryerJS follows the approach of NestJS for transforming and validating data, utilizing class-validator and class-transformer internally.

💡

Using @Transform directly on the property will NOT work

Scope

You can use the scopes option with the @Thunk decorator to define the specific scopes to which the decorator should be applied. The available scopes include input, create, update, output, or all. If you do not specify any scopes, the decorator will be applied to all scopes.

export type ThunkScope = 'all' | 'create' | 'update' | 'input' | 'output';
Base ModelFilter & Sort