FormFieldForm.php

<?php namespace App\Forms;

use Kris\LaravelFormBuilder\Form;

class FormFieldForm extends Form
{
    public function buildForm()
    {
        $this
             ->add('name', 'text', [
            	'label' => 'Название',
            	'required' => true,
                'wrapper' => ['class' => 'form-group col-md-6'],
            ])
            ->add('alias', 'text', ['label' => 'Алиас', 'wrapper' => ['class' => 'form-group col-md-6']])
            ->add('required', 'checkbox', ['label' => 'Обязательное поле', 'wrapper' => ['class' => 'form-group col-md-12']])
            ->add('type', 'select', ['label' => 'Тип', 'wrapper' => ['class' => 'form-group col-md-6'],
                'choices' => [
                    'text' => 'text',
                    'email' => 'email',
                    'textarea' => 'textarea',
                    'number' => 'number',
                    'tel' => 'tel',
                    'date' => 'date',
                    'month' => 'month',
                    'range' => 'range',
                    'checkbox' => 'checkbox',
                    'radio' => 'radio',
                    'select' => 'select',
                    'choice' => 'choice'
                    ],
                'empty_value' => '=== выберите тип поля ===',
                'selected' => function ($data) {
                        return array_pluck($data, 'type');
                    }
                ])
            ->add('description', 'text', ['label' => 'Описание', 'wrapper' => ['class' => 'form-group col-md-6']])
            ->add('order', 'number', ['label' => 'Порядок', 'wrapper' => ['class' => 'form-group col-md-6']])
            ->add('options', 'textarea', ['label' => 'Опции (JSON)', 'wrapper' => ['class' => 'form-group col-md-12']]);
    }
}

FormForm.php

<?php namespace App\Forms;

use Kris\LaravelFormBuilder\Form;

class FormForm extends Form
{
    public function buildForm()
    {
        $this
        ->add('name', 'text', [
           'label' => 'Название',
           'required' => true,
           ])
        ->add('alias', 'text', ['label' => 'Алиас'])
        ->add('description', 'text', ['label' => 'Описание'])
        ->add('hr', 'static', [
            'label' => false,
                'tag' => 'hr', // Tag to be used for holding static data,
                // 'attr' => ['class' => 'form-control-static'], // This is the default
                // 'default_value' => 'Static Text' // If nothing is passed, data is pulled from model if any
                ])
        ->add('fields', 'collection', [
            'type' => 'form',
            'label' => false,
            'prototype' => false,
            'options' => [
            'class' => 'App\Forms\FormFieldForm',
            'wrapper' => ['class' => 'row item-block'],
            'label' => false
            ]
            ])
        ->add('Сохранить', 'submit',
            [
            'attr' => ['class' => 'btn btn-primary']
            ]);
    }
}