打开任意一个控制器（如：TagController ），会发现，里面就一个index方法，但是增删改查功能却都具备。
```
<?php
namespace App\Http\Controllers\Admin;
use App\Http\Traits\TraitResource;
use App\Models\Tag;
use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
class TagController extends Controller
{
use TraitResource;
public function __construct()
{
self::$model = Tag::class;
self::$controlName = 'tag';
}
/**
* Description:
* User: Vijay
* Date: 2019/7/9
* Time: 22:53
* @param Request $request
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Contracts\View\Factory|\Illuminate\Http\Response|\Illuminate\View\View
*/
public function index(Request $request)
{
if ($request->isMethod('post')) {
$page = $request->input('page', 1);
$limit = $request->input('limit', 10);
$where = [];
$name = $request->input('name', '');
$delete = $request->input('delete', 0);
if ($name != '') {
$where[] = ['name', 'like', '%' . $name . '%'];
}
switch ($delete) {
case '1':
$list = self::$model::onlyTrashed()->where($where)->get();
break;
case '2':
$list = self::$model::withTrashed()->where($where)->get();
break;
default:
$list = self::$model::where($where)->get();
break;
}
$res = self::getPageData($list, $page, $limit);
return self::resJson(0, '获取成功', $res['data'], [
'count' => $res['count']]
);
}
return view('admin.' . self::$controlName . '.index', [
'control_name' => self::$controlName,
'delete_list' => self::$model::$delete,
]);
}
}
```
找到TraitResource所在目录App\Http\Traits\TraitResource，具体的操作都在这里面。
```
<?php
/**
* Description:资源操作
* Created by PhpStorm.
* User: Vijay
* Date: 2019/5/26
* Time: 12:06
*/
namespace App\Http\Traits;
use Illuminate\Http\Request;
use Illuminate\Pagination\LengthAwarePaginator;
trait TraitResource
{
/**
* 模块名称，use此trait的都必须设置，这是为了更好的复制粘贴一些通用的控制器和模板代码，
* @var null|string
*/
private static $controlName = null;
/**
* 模块要使用的模型
* @var null|string
*/
private static $model = null;
/**
* Description:展示列表
* User: Vijay
* Date: 2019/5/27
* Time: 22:28
* @param Request $request
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Contracts\View\Factory|\Illuminate\Http\Response|\Illuminate\View\View
*/
public function index(Request $request)
{
if ($request->isMethod('post')) {
$page = $request->input('page', 1);
$limit = $request->input('limit', 10);
$where = [];
$list = self::$model::where($where)->get();
$data = self::getPageData($list, $page, $limit);
return response($data);
}
return view('admin.' . self::$controlName . '.index',
[
'control_name' => self::$controlName,
]);
}
/**
* Description:创建视图
* User: Vijay
* Date: 2019/5/27
* Time: 22:28
* @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
*/
public function create()
{
return view('admin.' . self::$controlName . '.create',
[
'control_name' => self::$controlName,
]);
}
/**
* Description:添加请求的接口
* User: Vijay
* Date: 2019/5/27
* Time: 22:28
* @param Request $request
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
*/
public function store(Request $request)
{
$model = new self::$model;
try {
$model::create($request->input());
return $this->resJson(0, '操作成功');
} catch (\Exception $e) {
return $this->resJson(1, $e->getMessage());
}
}
/**
* Description:显示某一条内容
* User: Vijay
* Date: 2019/5/27
* Time: 22:28
* @param $id
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
*/
public function show($id)
{
$info = self::$model::find($id);
return $this->resJson(0, '操作成功', $info);
}
/**
* Description:编辑内容的视图
* User: Vijay
* Date: 2019/5/27
* Time: 22:29
* @param $id
* @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
*/
public function edit($id)
{
$info = self::$model::find($id);
return view('admin.' . self::$controlName . '.edit', [
'info' => $info,
'control_name' => self::$controlName,
]);
}
/**
* Description:编辑内容
* @param Request $request
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
* Description:
* User: Vijay
* Date: 2019/5/26
* Time: 21:20
*/
public function update(Request $request)
{
$info = self::$model::find($request->id);
if (empty($info)) {
return $this->resJson(1, '没有该条记录');
}
try {
$res = $info->update($request->input());
return $this->resJson(0, '操作成功', $res);
} catch (\Exception $e) {
return $this->resJson(1, $e->getMessage());
}
}
/**
* Description:删除
* User: Vijay
* Date: 2019/5/27
* Time: 22:11
* @param Request $request
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
*/
public function destroy(Request $request)
{
try {
$res = self::$model::destroy($request->id);
return $this->resJson(0, '操作成功', $res);
} catch (\Exception $e) {
return $this->resJson(1, $e->getMessage());
}
}
/**
* Description:恢复数据
* User: Vijay
* Date: 2019/5/27
* Time: 22:18
* @param Request $request
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
*/
public function restore(Request $request)
{
$info = self::$model::onlyTrashed()->find($request->id);
if (empty($info)) {
return $this->resJson(1, '没有该条记录');
}
try {
$res = $info->restore();
return $this->resJson(0, '操作成功', $res);
} catch (\Exception $e) {
return $this->resJson(1, $e->getMessage());
}
}
/**
* Description:彻底删除
* User: Vijay
* Date: 2019/5/27
* Time: 22:18
* @param Request $request
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
*/
public function forceDelete(Request $request)
{
$info = self::$model::onlyTrashed()->find($request->id);
if (empty($info)) {
return $this->resJson(1, '没有该条记录');
}
try {
$res = $info->forceDelete();
return $this->resJson(0, '操作成功', $res);
} catch (\Exception $e) {
return $this->resJson(1, $e->getMessage());
}
}
/**
* @param object|array $list 获取的数据
* @param int $page 当前页数
* @param int $limit 没有数量
* @return array
* Description:获取分页数据
* User: Vijay
* Date: 2019/5/26
* Time: 15:45
*/
private static function getPageData($list, $page, $limit): array
{
if (is_object($list)) {
$listArr = $list->toArray();
} elseif (is_array($list)) {
$listArr = $list;
} else {
$listArr = [];
}
$count = count($list);
$item = array_slice($listArr, ($page - 1) * $limit, $limit);
$paginator = new LengthAwarePaginator($item, $count, $limit, $page);
return [
'data' => $paginator->items(),
'count' => $count
];
}
/**
* @param int $code 返回状态码
* @param string $msg 返回信息
* @param null $data 返回数据
* @param array $additional 附加数据
* @param array $header 头信息
* @return \Illuminate\Contracts\Routing\ResponseFactory|\Illuminate\Http\Response
* Description:返回json数据
* User: Vijay
* Date: 2019/5/26
* Time: 16:41
*/
protected function resJson($code = 0, $msg = '', $data = null, array $additional = [], array $header = [])
{
$result = [
'code' => $code,
'msg' => $msg,
'data' => $data,
];
if (count($additional) > 0) {
foreach ($additional as $key => $val) {
$result[$key] = $val;
}
}
$result['create_time'] = date('Y-m-d H:i:s', time());
return response($result)->withHeaders($header);
}
}
```
