copyFrom()

function copyFrom<TForm, TSource, TTarget>(
   source, 
   target, 
   options?): void;

Defined in: core/behavior/behaviors/copy-from.ts:67

Копирует значения из одного поля/группы в другое при выполнении условия

Type Parameters

TForm

TForm

TSource

TSource

TTarget

TTarget

Parameters

source

FieldPathNode<TForm, TSource>

Откуда копировать

target

FieldPathNode<TForm, TTarget>

Куда копировать

options?

CopyFromOptions<TSource, TForm>

Опции копирования (when, fields, transform, debounce)

Returns

void

Examples

import { copyFrom, type BehaviorSchemaFn } from '@reformer/core/behaviors';

interface ContactForm {
  sameEmail: boolean;
  email: string;
  emailAdditional: string;
}

export const contactBehavior: BehaviorSchemaFn<ContactForm> = (path) => {
  copyFrom(path.email, path.emailAdditional, {
    when: (form) => form.sameEmail === true,
  });
};

import { copyFrom, type BehaviorSchemaFn } from '@reformer/core/behaviors';

interface Address { country: string; region: string; city: string; street: string }
interface ProfileForm {
  sameAsRegistration: boolean;
  registrationAddress: Address;
  residenceAddress: Address;
}

export const profileBehavior: BehaviorSchemaFn<ProfileForm> = (path) => {
  copyFrom(path.registrationAddress, path.residenceAddress, {
    when: (form) => form.sameAsRegistration === true,
    fields: ['country', 'region', 'city'], // street НЕ копируем
    transform: (addr) => ({
      ...addr,
      country: addr.country.toUpperCase(), // нормализация при копировании
    }),
    debounce: 200,
  });
};

See

docs/llms/23-copy-from.md