[PHP知识库]laravel-admin实现数据展示的增删改查

• 在laravel中安装laravel-admin

按顺序执行以下命令
composer require encore/laravel-admin:1.*
php artisan vendor:publish --provider="Encore\Admin\AdminServiceProvider"
php artisan admin:install

• 在数据库中建立数据表
• 在命令行生成数据表的模型
• 使用命令生成表对应的控制器（控制器会自动生成对应的部分代码）

php artisan admin:make BrandController --model=App\Brand

• ?根据上图提示添加资源路由

 $router->resource('brands', BrandController::class);

• 然后登录账号密码（admin:admin）
• 上传图片添加配置（在config/filesystems.php文件中修改）

'admin' => [
        'driver' => 'local',
        'root' => public_path('uploads'),
        'visibility' => 'public',
        'url' => env('APP_URL').'/uploads',
    ],

• 上传图片及其展示图片代码

        //表单上传图片
 $form->image('logo', __('Logo'));
        //展示图片
 $grid->column('logo', '商标')->image('http://www.day8.com/uploads');

完整控制器代码

<?php

namespace App\Admin\Controllers;

use App\Brand;
use App\Catogor;
use Encore\Admin\Controllers\AdminController;
use Encore\Admin\Form;
use Encore\Admin\Grid;
use Encore\Admin\Show;

class BrandController extends AdminController
{
    /**
     * Title for current resource.
     *
     * @var string
     */
    protected $title = 'Brand';

    /**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        $grid = new Grid(new Brand());
        $grid->paginate(4);
        $grid->column('id', __('Id'));
        $grid->column('sort', __('Sort'));
        $grid->column('logo', '商标')->image('http://www.day8.com/uploads');
        $grid->column('title', __('Title'));
        $grid->column('catogory', '品牌')->display(function ($catogory) {
            return Catogor::find($catogory)->cato_name;
        });
//        $grid->column('catogory', __('Catogory'));
        $grid->column('created_at', __('Created at'));
        $grid->column('updated_at', __('Updated at'));
        $grid->perPages([4, 5, 10, 15]);
        return $grid;
    }

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

        $show->field('id', __('Id'));
        $show->field('sort', __('Sort'));
        $show->field('logo', __('Logo'));
        $show->field('title', __('Title'));

        $show->field('catogory', __('Catogory'));
        $show->field('created_at', __('Created at'));
        $show->field('updated_at', __('Updated at'));

        return $show;
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        $form = new Form(new Brand());
        $form->number('sort', __('Sort'));
        $form->image('logo', __('Logo'));
        $form->text('title', __('Title'));
        $directors = $this->cato();
        $form->select('catogory', '分类')->options($directors);

        return $form;
    }
       /*
          获取品牌分类名称
         */
    public function cato()
    {
        $arr = Catogor::all()->toArray();
        $id = array_column($arr, 'id');
        $cato_name = array_column($arr, 'cato_name');
        $arr = array_combine($id, $cato_name);
        return $arr;
    }
}