@foreach($menu->childMenus as $childKey => $smenu)

        <div class="col-md-3">
            <div class="form-check form-check-secondary">
                <input type="checkbox" 
                    class="form-check-input menu-checkbox-level3 menu-group-level1-{{$menuIdLevel1}} menu-group-level2-{{$menu->id}}" 
                    id="menu-{{$smenu->id}}" 
                    data-parent-level1="{{$menuIdLevel1}}"
                    data-parent-level2="{{$menu->id}}"
                    name="permissions[]"
                    value="menu.{{ $smenu->alias }}"
                    @if(in_array('menu.'.$smenu->alias ,$existingPermissions)) checked @endif>
                
                <label class="form-check-label" for="menu-{{$smenu->id}}">
                    {{$smenu->name}}
                </label>
            </div>
        </div>

    @endforeach