<?= FieldBuilder::widget()
   ->withForm($form)
   ->form($model)
   ->attribute('login')
   ->autofocus(true)
   ->placeHolder('login')
   ->tabindex('1')
   ->label('Login:')
   ->textInput()
?>

<?= FieldBuilder::widget()
   ->withForm($form)
   ->form($model)
   ->attribute('login')
   ->label('Login:')
   ->textInput([
        'autofocus' => true,
        'placeholder' => 'Login: ',
        'tabindex' => '1'
   ])
?>

It equals yii2 just add the withForm() method.

It's hard to add syntax sugar like in yii2 : $form->field ... ?

Nope, should not be hard.

well in yii2 the ides do not give a suggestion of methods, in yii3 yes.

@yiiliveext they are silent

How to add custom widget ?

Фигасе, только отошел, а тут уже нефтью торгуют😬

inside the form?

İnside and outside. I'm just asking because don't know how

its very simple:

<?= FormBuilder::begin() ?>
   <?= Custom::widget ?>
<?= FormBuilder::end() ?>

or

<?= Form::begin() ?>
   <?= Custom::widget() ?>
<?= Form::end() ?>

you can use the constructor or it is not your decision.

outside <?= Custom::widget() ?>

I see

the form are so flexible that you can only use the class.

Ok, I'm just curious , can we also have ability to use it like this : $form->model($model)->attribute('someattr') ... ?

\\ Yii3
<?= FieldBuilder::widget()
   ->withForm($form)
   ->form($model)
   ->attribute('login')
   ->autofocus(true)
   ->placeHolder('login')
   ->tabindex('1')
   ->label('Login:')
   ->textInput()
?>

\\ Yii2
<?= $form->field($model, 'login')
   ->textInput([
     'autofocus' => true,
       'placeholder' => \Yii::t('app.user', 'Login'),
       'required' => (YII_ENV === 'test') ? false : true,
       'tabindex' => '1',
   ])
   ->label(\Yii::t('app.user', 'Login'))
?>

it is exactly the same.

вот до такого примерно функционала предалагаю упростить https://github.com/romkatsu/yii2-collection/blob/redesign_draft/src/Collection.php

Там всё ещё много Array-only методов, насколько я вижу...

например?