The yii2-builder extension can be installed automatically or manually using one of these options:

$ php composer.phar require kartik-v/yii2-builder "dev-master"

"kartik-v/yii2-builder": "dev-master"

• Configure your form fields from a model extending yii\base\model or yii\db\ActiveRecord.
• Ability to support various Bootstrap 5.x / 4.x / 3.x form layouts. Uses the advanced kartik\form\ActiveForm.
• Use Bootstrap column/builder layout styling by just supplying columns property.
• Build complex layouts (for example single, double, or multi columns in the same layout) - by reusing the widget for building your attributes.
• Tweak ActiveForm defaults to control field options, styles, templates, and layouts.
• With release v1.5.0, the extension now supports the Form Builder to be used without ActiveForm (i.e with normal HTML form and without model).
• Configure your own hints to display below each active field attribute.
• Various Bootstrap 5.x / 4.x / 3.x styling features are available by default. However, one can easily customize and theme it to one's liking using any CSS framework.
• Supports and renders HTML input types (uses kartik\form\ActiveField) including input widgets

use kartik\form\ActiveForm;
use kartik\builder\Form;
$form = ActiveForm::begin();
echo Form::widget([
    'model' => $model,
    'form' => $form,
    'columns' => 2,
    'attributes' => [
        'username' => ['type'=>Form::INPUT_TEXT, 'options'=>['placeholder'=>'Enter username...']],
        'password' => ['type'=>Form::INPUT_PASSWORD, 'options'=>['placeholder'=>'Enter password...']],
        'rememberMe' => ['type'=>Form::INPUT_CHECKBOX],
    ]
]);
ActiveForm::end();

use kartik\form\ActiveForm;
use kartik\builder\FormGrid;
$form = ActiveForm::begin();
echo FormGrid::widget([
'model' => $model,
'form' => $form,
'autoGenerateColumns' => true,
'rows' => [
    [
        'attributes' => [
            'username' => ['type'=>Form::INPUT_TEXT, 'options'=>['placeholder'=>'Enter username...']],
            'password' => ['type'=>Form::INPUT_PASSWORD, 'options'=>['placeholder'=>'Enter password...']],
            'rememberMe' => ['type'=>Form::INPUT_CHECKBOX],
        ],
    ],
    [
        'attributes' => [
            'first_name' => ['type'=>Form::INPUT_TEXT, 'options'=>['placeholder'=>'Enter first name...']],
            'last_name' => ['type'=>Form::INPUT_TEXT, 'options'=>['placeholder'=>'Enter last name...']],
        ]
    ]
]
]);
ActiveForm::end();

The tabular form allows you to update information from multiple models (typically used in master-detail forms).

'modules' => [
   'gridview' =>  [
        'class' => '\kartik\grid\Module'
    ]
];

The widget provides these features:

• Supports all input types as mentioned in the Form builder widget
• The widget works exactly like a Yii GridView with an ActiveDataProvider, but allows you to batch update fields and submit the form.
• Supports features of the GridView like pagination and sorting.
• With release v1.5.0, the extension now supports the Form Builder to be used with all data providers and without ActiveForm (i.e with normal HTML form and without model).
• Allows each row selection for selective batch processing.
• Highlight selected table rows.
• Allows you to add and configure action buttons for each row.
• Allows you to add batch action buttons for the grid.
• Configure your own hints to display below each active field attribute.
• Various Bootstrap 5.x / 4.x / 3.x styling features are available by default. However, one can easily customize and theme it to one\'s liking using any CSS framework.
• Advanced table styling, columns, and layout configuration by using the features available in the kartik\builder\GridView and kartik\form\ActiveForm widgets.
• One can easily read and manage the tabular input data using the loadMultiple and validateMultiple functions in yii\base\Model.

View details and demo

use kartik\builder\TabularForm;
use kartik\grid\GridView;
$form = ActiveForm::begin();
echo TabularForm::widget([
    'form' => $form,
    'dataProvider' => $dataProvider,
    'attributes' => [
        'id' => ['type' => TabularForm::INPUT_STATIC, 'columnOptions'=>['hAlign'=>GridView::ALIGN_CENTER]],
        'name' => ['type' => TabularForm::INPUT_TEXT],
        'color' => [
            'type' => TabularForm::INPUT_WIDGET, 
            'widgetClass' => \kartik\color\ColorInput::classname()
        ],
        'author_id' => [
            'type' => TabularForm::INPUT_DROPDOWN_LIST, 
            'items'=>ArrayHelper::map(Author::find()->orderBy('name')->asArray()->all(), 'id', 'name')
        ],
        'buy_amount' => [
            'type' => TabularForm::INPUT_TEXT, 
            'options'=>['class'=>'form-control text-right text-end'], 
            'columnOptions'=>['hAlign'=>GridView::ALIGN_RIGHT]
        ],
        'sell_amount' => [
            'type' => TabularForm::INPUT_STATIC, 
            'columnOptions'=>['hAlign'=>GridView::ALIGN_RIGHT]
        ],
    ],
    'gridSettings' => [
        'floatHeader' => true,
        'panel' => [
            'heading' => '<h3 class="panel-title"><i class="fas fa-book"></i> Manage Books</h3>',
            'type' => GridView::TYPE_PRIMARY,
            'after'=> 
                Html::a(
                    '<i class="fas fa-plus"></i> Add New', 
                    $createUrl, 
                    ['class'=>'btn btn-success']
                ) . ' ' . 
                Html::a(
                    '<i class="fas fa-times"></i> Delete', 
                    $deleteUrl, 
                    ['class'=>'btn btn-danger']
                ) . ' ' .
                Html::submitButton(
                    '<i class="fas fa-save"></i> Save', 
                    ['class'=>'btn btn-primary']
                )
        ]
    ]     
]); 
ActiveForm::end();