`<Field />`

Before we'll start making our forms let's create decorator to make it easier to build forms later. To do or not do something like it's fully up to you but overall it's a nice way to make your forms simplier.

typescript

import type { FieldModel } from '@filledout/core';

import { getFieldFormMeta } from '@filledout/core';

import { useUnit } from 'effector-react';

import type { ComponentType } from 'react';

import { useTranslation } from 'react-i18next';

import { useField } from './factory';

type FieldChildProps = {
  value?: any;
  error?: string;
  focused?: boolean;
  hasError?: boolean;
  onBlur: (...args: any[]) => any | void;
  onFocus: (...args: any[]) => any | void;
  onChange: (...args: any[]) => any | void;
};

// eslint-disable-next-line @typescript-eslint/no-empty-function
const nope = (..._: any[]) => {};

const compose =
  (g: any, f = nope) =>
  (x: any) => {
    g(x);

    f(x);
  };

const useFieldProps = (is: FieldModel<any>, props: FieldChildProps) => {
  const field = useField(is);
  const meta = getFieldFormMeta(is);

  const { t } = useTranslation();

  const {
    value,
    errors,
    externalErrors,
    focused,
    shouldShowValidation,
    onBlur,
    onFocus,
    onChange
  } = field;

  const error = errors?.[0] ?? externalErrors?.[0];

  return {
    value,
    focused,
    disabled: useUnit(meta.$isDisabled),
    hasError: shouldShowValidation,
    error: error ? t(error.name, { replace: error.params }) : undefined,
    onBlur: compose(onBlur, props.onBlur),
    onFocus: compose(onFocus, props.onFocus),
    onChange: compose(onChange, props.onChange)
  };
};

function withField<P>(Component: ComponentType<P>) {
  return ({ field, ...props }: P & { field: FieldModel<any> }) => (
    <Component
      {...(props as any)}
      {...useFieldProps(field, props as any as FieldChildProps)}
    />
  );
}

export { withField };

<Field /> #

`<Field />`