求助PHP-Laravel-API大佬

Samding 发表于 2020-4-3 15:16

本帖最后由 Samding 于 2020-4-3 16:07 编辑

目的：输入数据库中存在的id就返回图1的内容，输入不存在的id就返回图2的错误信息
现在只能实现前半句，输入不存在的id并不会返回错误信息，什么都不会返回，求大佬看下为什么

Hander.php
<?php

namespace App\Exceptions;

use Exception;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Illuminate\Database\Eloquent\ModelNotFoundException;

class Handler extends ExceptionHandler
{
/**
* A list of the exception types that are not reported.
*
* @var array
*/
protected $dontReport = [
   //
];

/**
* A list of the inputs that are never flashed for validation exceptions.
*
* @var array
*/
protected $dontFlash = [
   'password',
   'password_confirmation',
];

/**
* Report or log an exception.
*
* @Param\Exception$exception
* @Return void
*/
public function report(Exception $exception)
{
   parent::report($exception);
}

/**
* Render an exception into an HTTP response.
*
* @param\Illuminate\Http\Request$request
* @param\Exception$exception
* @return \Illuminate\Http\Response
*/
   public function render($request, Exception $exception)
   {
      if ($exception instanceof ModelNotFoundException) {
            return response()->json([
               'error' => 'Resource not found.'
            ],404);
      }
      return parent::render($request, $exception);
   }
}

Api.php
<?php

use Illuminate\Http\Request;
use App\Article;
use Illuminate\Support\Facades\Log;

/*
|--------------------------------------------------------------------------
| API Routes
|--------------------------------------------------------------------------
|
| Here is where you can register API routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| is assigned the "api" middleware group. Enjoy building your API!
|
*/

Route::middleware('auth:api')->get('/user', function (Request $request) {
return $request->user();
});

Route::get('articles', 'ArticleController@index');
Route::get('articles/{id}', 'ArticleController@show');
Route::post('articles', 'ArticleController@store');
Route::put('articles/{id}', 'ArticleController@update');
Route::delete('articles/{id}', 'ArticleController@delete');

ArticleController.php
<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Article;

class ArticleController extends Controller
{
public function index()
   {
            return Article::all();
   }

   public function show($id)
   {
            return Article::find($id);
   }

   public function store(Request $request)
   {
            return Article::create($request->all());
   }

   public function update(Request $request, $id)
   {
            $article = Article::findOrFail($id);
            $article->update($request->all());

            return $article;
   }

   public function delete(Request $request, $id)
   {
            $article = Article::findOrFail($id);
            $article->delete();

            return 204;
   }
}

琴似蓝调 发表于 2020-4-3 15:23

public function render($request, Exception $exception)
   {
      if ($exception instanceof ModelNotFoundException) {
            return response()->json([
               'error' => 'Resource not found.'
            ],404);
      }
      return parent::render($request, $exception);
   }

删除if判断即可

Samding 发表于 2020-4-3 15:31

琴似蓝调发表于 2020-4-3 15:23
public function render($request, Exception $exception)
{
if ($exception instanc ...

删掉了还是和之前一样呢

琴似蓝调 发表于 2020-4-3 15:38

51-53也屏蔽掉，，，

琴似蓝调 发表于 2020-4-3 15:39

你的操作真的是让我狠吃惊。。。。

winlans 发表于 2020-4-3 15:42

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Article;

class ArticleController extends Controller
{
public function index()
{
   return Article::all();
}

public function show($id)
{
   if($article = Article::find($id)){
      return response()->json($article);
   }

   return response()->json(['error'=> 'resource not found'], 404);
}

public function store(Request $request)
{
   return Article::create($request->all());
}

public function update(Request $request, $id)
{
   $article = Article::findOrFail($id);
   $article->update($request->all());

   return $article;
}

public function delete(Request $request, $id)
{
   $article = Article::findOrFail($id);
   $article->delete();

   return 204;
}
}

winlans 发表于 2020-4-3 15:45

查询数据库不存在，并不会出现异常，所以去异常那里处理本身就是不对的，再者，你如果写接口，就应该有规范，你现在这种格式返回是不行的。建议看看接口规范。猜你应该是新手

唯一丶 发表于 2020-4-3 15:45

本帖最后由唯一丶于 2020-4-3 15:47 编辑

如果你要在异常处理器中处理的话，

```php
public function show($id)
{
return Article::find($id);
}
```
这里就应该使用
```php
public function show($id)
{
return Article::findOrFail($id);
}
```
这样当不存在时才会抛出模型不存在异常，Model::find($id) 如果不存在，返回的是 null
[快速入门](https://learnku.com/docs/laravel/5.5/eloquent/1332#475874)

Samding 发表于 2020-4-3 16:05

唯一丶发表于 2020-4-3 15:45
如果你要在异常处理器中处理的话，

```php

懂了，终于搞定了，谢谢

Samding 发表于 2020-4-3 16:12

本帖最后由 Samding 于 2020-4-3 16:15 编辑

琴似蓝调发表于 2020-4-3 15:38
51-53也屏蔽掉，，，
这样直接凉了呀，52也屏蔽掉还是返回空呀

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求助PHP-Laravel-API大佬