lkafu/app/Admin/Controllers/CategoryController.php

<?php

namespace App\Admin\Controllers;

use App\Models\Category;
use Encore\Admin\Controllers\AdminController;
use Encore\Admin\Controllers\HasResourceActions;
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\Widgets\Form as WidgetsForm;

class CategoryController extends AdminController
{
    use HasResourceActions;

    /**
     * Index interface.
     *
     * @param Content $content
     * @return Content
     */
    public function index(Content $content)
    {
        return $content
            ->header('分类')
            ->row(function (Row $row) {
                $row->column(6, $this->treeView());

                $row->column(6, function (Column $column) {
                    $form = new WidgetsForm();

                    $form->select('parent_id', '上级分类')->options(Category::selectOptions(function ($model) {
                        return $model->where('status', 1);
                    }, '一级分类'));
                    $form->select('type', '分类类型')->options(['goods' => '商品', 'article' => '文章']);
                    $form->text('title', '分类名称')->rules('required');
                    $form->textarea('description', '分类简介')->rows(4)->rules('nullable');
                    $form->image('cover', 'Logo');
                    $form->number('order', '排序')->default(0);
                    $form->switch('status', '显示')->states()->default(1);

                    $form->action('/admin/categories');

                    $column->append((new Box('新增分类', $form))->style('success'));
                });
            });
    }

    /**
     * @return \Encore\Admin\Tree
     */
    protected function treeView()
    {
        return Category::tree(function (Tree $tree) {
            $tree->disableCreate();

            $tree->branch(function ($branch) {
                if ($branch['status'] == 1) {
                    $payload = "<i class='fa fa-eye text-primary'></i> ";
                } else {
                    $payload = "<i class='fa fa-eye text-gray'></i> ";
                }
                $payload .= " [ID:{$branch['id']}] - ";
                $payload .= " <strong>{$branch['title']}</strong> ";
                $payload .= " <small style='color:#999'>{$branch['description']}</small>";

                return $payload;
            });
        });
    }

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

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

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

    /**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        $grid = new Grid(new Category);

        $grid->id('Id');
        $grid->title('分类名称');
        $grid->description('分类简介');
        $grid->order('排序');
        $grid->status('显示')->switch();
        $grid->created_at('创建时间');

        return $grid;
    }

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

        $show->id('Id');
        $show->created_at('Created at');
        $show->updated_at('Updated at');

        return $show;
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        $form = new Form(new Category);

        $form->select('parent_id', '上级分类')->options(Category::selectOptions(function ($model) {
            return $model->where('status', 1);
        }, '一级分类'));
        $form->select('type', '分类类型')->options(['goods' => '商品', 'article' => '文章'])->rules('required');
        $form->text('title', '分类名称')->rules('required');
        $form->textarea('description', '分类简介')->rows(4)->rules('nullable');
        $form->image('cover', 'Logo');
        $form->number('order', '排序')->default(0);
        $form->switch('status', '显示')->states()->default(1);

        return $form;
    }

}