{!! html()->form('POST', route('asset-hierarchy-sub-unit.store'))->id('assetHierarchySubUnitForm')->open() !!}
<div class="row">
    <div class="col-md-12">
        <div class="card card-primary mb-0">
            <div class="card-body">
                <div class="row">
                    <div class="col-sm-12 form-group">
                        {!! html()->label('Unit <span class="text-danger">*</span>', 'unit_id')->toHtml() !!}
                        {!! html()->select('unit_id', ['' => 'Select Unit'] + $units->toArray())->id('unit_id')->class('form-control select2')->required() !!}

                    </div>
                    <div class="col-sm-12 form-group">
                        {!! html()->label('Sub Unit Name <span class="text-danger">*</span>', 'sub_unit_name')->toHtml() !!}
                        {!! html()->text('sub_unit_name')->name('sub_unit_name')->class('form-control')->placeholder('Enter Sub Unit Name')->required() !!}
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
{!! html()->form()->close() !!}