jucai/app/Admin/Controllers/Content/HelpCategoryController.php

<?php

namespace App\Admin\Controllers\Content;

use App\Http\Controllers\Controller;
use App\Models\HelpCategory;
use Encore\Admin\Controllers\HasResourceActions;
use Encore\Admin\Facades\Admin as SysAdmin;
use Encore\Admin\Form;
use Encore\Admin\Grid;
use Encore\Admin\Layout\Column;
use Encore\Admin\Layout\Content;
use Encore\Admin\Layout\Row;
use Encore\Admin\Show;
use Encore\Admin\Tree;
use Encore\Admin\Widgets\Box;

//use Encore\Admin\Grid;

class HelpCategoryController extends Controller
{
    use HasResourceActions;

    /**
     * Index interface.
     *
     * @param Content $content
     * @return Content
     */
    public function index(Content $content)
    {
        return $content
            ->header(trans('帮助分类'))
            ->description(trans('删除顶级分类将会自动删除此分类下的子分类。'))
            ->row(function (Row $row) {
                if (SysAdmin::user()->can('content_help_category_create')) {
                    $row->column(6, $this->tree()->render());
                    $row->column(6, function (Column $column) {
                        $form = new \Encore\Admin\Widgets\Form();
                        $form->action(route('help.category.index'));
                        $cate_option = HelpCategory::where(array('parent_id'=>0))->orderBy('list_order', 'desc')->orderBy('created_at', 'desc')->get()->pluck('category_name', 'id');
                        $cate_option = $cate_option->toArray();
                        $cate_option = array('0'=>'顶级分类')+$cate_option;
                        $form->select('parent_id', '所属分类')->options($cate_option)->default(0)->setMustMark();
                        $form->text('category_name', '分类名称')->attribute('maxlength', '25')->setMustMark();
                        $form->number('list_order', '排序')->min(0)->default(0)->help('（数字越大越靠前）')->attribute('maxlength', '10')->setMustMark();
                        $form->hidden('_token')->default(csrf_token());
                        $form->disableReset();
                        $column->append((new Box(trans('admin.new'), $form))->style('success'));
                    });
                } else {
                    $row->column(12, $this->tree()->render());
                }
            });
    }
    protected function tree()
    {
        return HelpCategory::tree(function (Tree $tree) {
            $tree->branch(function ($branch) {
                return "{$branch['category_name']} (id:{$branch['id']})";
            });

            $tree->setView(array(
                'tree'   => 'admin::tree',
                'branch' => 'admin.content.tree_branch'
            ));
            $tree->query(function ($model) {
                return $model->OrderBy('list_order', 'desc')->OrderBy('created_at', 'desc');
            });
        });
    }

    /**
     * Show interface.
     *
     * @param mixed $id
     * @param Content $content
     * @return Content
     */
    public function show($id, Content $content)
    {
        return $content
            ->header('帮助分类')
            ->description(' ')
            ->body($this->detail($id));
    }

    /**
     * Edit interface.
     *
     * @param mixed $id
     * @param Content $content
     * @return Content
     */
    public function edit($id, Content $content)
    {
        return $content
            ->header('帮助分类')
            ->description(' ')
            ->body($this->editForm()->edit($id));
    }

    /**
     * Create interface.
     *
     * @param Content $content
     * @return Content
     */
    public function create(Content $content)
    {
        return $content
            ->header('帮助分类')
            ->description(' ')
            ->body($this->form());
    }

    /**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        $grid = new Grid(new HelpCategory);
        $grid->model()->orderBy('parent_id', 'asc')->orderBy('list_order', 'DESC');

        $grid->id('ID');
        $grid->category_name('分类名称');
        $grid->parent()->category_name('上级分类');
        $grid->list_order('排序');
        $grid->created_at('添加时间');
        $grid->updated_at('更新时间');

        $grid->disableFilter();
        return $grid;
    }

    /**
     * Make a show builder.
     *
     * @param mixed $id
     * @return Show
     */
    protected function detail($id)
    {
        $show = new Show(HelpCategory::findOrFail($id));

        $show->id('ID');
        $show->category_name('分类名称');
        $show->parent()->category_name('上级分类');
        $show->list_order('排序');
        $show->created_at('添加时间');
        $show->updated_at('更新时间');

        return $show;
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        $form = new Form(new HelpCategory);
        $cate_option = HelpCategory::where(array('parent_id'=>0))->get()->pluck('category_name', 'id');
        $cate_option = HelpCategory::selectOptions();
        $cate_option[0] ='顶级分类';
        $form->select('parent_id', '所属分类')->options($cate_option)->rules('required', array('required'=>'请选择所属分类。'));
        $form->text('category_name', '分类名称')->rules('required', array('required'=>'分类名称不能为空。'));
        $form->number('list_order', '排序')->min(0)->default(0)
             ->attribute('maxlength', '10')->rules('required', array('required'=>'排序不能为空。'))->help('（数字越大越靠前）');

        return $form;
    }
    protected function editForm()
    {
        $form = new Form(new HelpCategory);
        $cate_option = HelpCategory::where(array('parent_id'=>0))->OrderBy('list_order', 'DESC')->orderBy('created_at', 'DESC')->get()->pluck('category_name', 'id');
        $cate_option = $cate_option->toArray();
        $cate_option = array('0'=>'顶级分类')+$cate_option;
        $form->select('parent_id', '所属分类')->options($cate_option)->rules('required', array('required'=>'请选择所属分类。'))->setWidth(4)->setMustMark();
        $form->text('category_name', '分类名称')->rules('required', array('required'=>'分类名称不能为空。'))->attribute('maxlength', '25')->setWidth(4)->setMustMark();
        $form->number('list_order', '排序')->min(0)->default(0)->attribute('maxlength', '10')
             ->rules('required', array('required'=>'排序不能为空。'))->help('（数字越大越靠前）')->setMustMark();

        $form->footer(function ($footer) {
            $footer->disableViewCheck();
            $footer->disableEditingCheck();
            $footer->disableCreatingCheck();
            $footer->disableReset();
        });
        $form->tools(function (Form\Tools $tools) {
            $tools->disableDelete();
            $tools->disableView();
        });

        return $form;
    }

    public function update($id)
    {
        return $this->editForm()->update($id);
    }

    public function destroys($id)
    {
        $id_arr =  explode(',', $id);
        $children_ids = HelpCategory::whereIn('parent_id', $id_arr)->select('id')->get()->pluck('id')->toArray();
        if ($children_ids) {
            $id_arr = array_merge($id_arr, $children_ids);
        }
        $filter_id = implode(',', $id_arr);
        if ($this->form()->destroy($filter_id)) {
            $data = [
                'status'  => true,
                'message' => trans('admin.delete_succeeded'),
            ];
        } else {
            $data = [
                'status'  => false,
                'message' => trans('admin.delete_failed'),
            ];
        }
        return response()->json($data);
    }
}