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[英]Laravel 5.6 Class App\Http\Controllers\PostController does not exist
[英]Class App\Http\Controllers\PostController does not exist
首先讓我說“我知道這個問題經常被問到”。 相信我,當我說什么都對我有用時。
我創建了一個名為 PostController 的PostController
。 這是我博客的 controller。 當我導航到我的博客時,出現以下錯誤Class App\Http\Controllers\PostController does not exist
,即使它確實存在。 controller 稱為PostController.php
。 這是路由的樣子Route::get('blog','PostController@index');
. 我讀過運行一些composer
命令會有所幫助,但沒有一個對我有幫助。 composer dumpautoload
以及composer update
。 我在這里錯過了一些步驟嗎? 有人遇到過類似的問題嗎? 如果需要其他信息,請告訴我。
編輯這是頂部的命名空間。
use App\Http\Controllers;
use App\Posts;
use App\User;
use App\Http\Controllers\Controller;
use App\Http\Requests\PostFormRequest;
use Illuminate\Http\Request;
這是整個Controller。
<?php
use App\Http\Controllers;
use App\Posts;
use App\User;
use App\Http\Controllers\Controller;
use App\Http\Requests\PostFormRequest;
use Illuminate\Http\Request;
class PostController extends Controller {
/**
* Display a listing of the resource.
*
* @return Response
*/
public function index()
{
//fetch 5 posts from database which are active and latest
$posts = Posts::where('active',1)->orderBy('created_at','desc')->paginate(5);
//page heading
$title = 'Latest Posts';
//return home.blade.php template from resources/views folder
return view('blog/home')->withPosts($posts)->withTitle($title);
}
/**
* Show the form for creating a new resource.
*
* @return Response
*/
public function create(Request $request)
{
// if user can post i.e. user is admin or author
if($request->user()->can_post())
{
return view('blog.create');
}
else
{
return redirect('blog');
}
}
/**
* Store a newly created resource in storage.
*
* @return Response
*/
public function store(PostFormRequest $request)
{
$post = new Posts();
$post->title = $request->get('title');
$post->body = $request->get('body');
$post->slug = str_slug($post->title);
$post->author_id = $request->user()->id;
if($request->has('save'))
{
$post->active = 0;
$message = 'Post saved successfully';
}
else
{
$post->active = 1;
$message = 'Post published successfully';
}
$post->save();
return redirect('edit/'.$post->slug)->withMessage($message);
}
/**
* Display the specified resource.
*
* @param int $id
* @return Response
*/
public function show($slug)
{
$post = Posts::where('slug',$slug)->first();
if(!$post)
{
return redirect('/')->withErrors('requested page not found');
}
$comments = $post->comments;
return view('posts.show')->withPost($post)->withComments($comments);
}
/**
* Show the form for editing the specified resource.
*
* @param int $id
* @return Response
*/
public function edit(Request $request,$slug)
{
$post = Posts::where('slug',$slug)->first();
if($post && ($request->user()->id == $post->author_id || $request->user()->is_admin())){
return view('posts.edit')->with('post',$post);
}
return redirect('blog')->withErrors('you have not sufficient permissions');
}
/**
* Update the specified resource in storage.
*
* @param int $id
* @return Response
*/
public function update(Request $request)
{
//
$post_id = $request->input('post_id');
$post = Posts::find($post_id);
if($post && ($post->author_id == $request->user()->id || $request->user()->is_admin()))
{
$title = $request->input('title');
$slug = str_slug($title);
$duplicate = Posts::where('slug',$slug)->first();
if($duplicate)
{
if($duplicate->id != $post_id)
{
return redirect('edit/'.$post->slug)->withErrors('Title already exists.')->withInput();
}
else
{
$post->slug = $slug;
}
}
$post->title = $title;
$post->body = $request->input('body');
if($request->has('save'))
{
$post->active = 0;
$message = 'Post saved successfully';
$landing = 'edit/'.$post->slug;
}
else {
$post->active = 1;
$message = 'Post updated successfully';
$landing = $post->slug;
}
$post->save();
return redirect($landing)->withMessage($message);
}
else
{
return redirect('blog')->withErrors('you have not sufficient permissions');
}
}
/**
* Remove the specified resource from storage.
*
* @param int $id
* @return Response
*/
public function destroy(Request $request, $id)
{
//
$post = Posts::find($id);
if($post && ($post->author_id == $request->user()->id || $request->user()->is_admin()))
{
$post->delete();
$data['message'] = 'Post deleted Successfully';
}
else
{
$data['errors'] = 'Invalid Operation. You have not sufficient permissions';
}
return redirect('blog')->with($data);
}
}
謝謝。
打開 App\\Provider\\RouteServiceProvider.php 並添加這一行
protected $namespace = 'App\Http\Controllers';
在這個下面
public const HOME = '/home';
你的錯誤就會消失。
如果composer dumpautoload
是沒有幫助,然后檢查是否有適當的namespace
中聲明PostController.php
和類名/路由聲明錯別字雙重檢查。
如果這失敗,請檢查composer.json
的自動加載配置,它應該是這樣的:
"autoload": {
"psr-4": {
"App\\": "app/"
}
},
作為旁注,你可以使用這樣的東西:
Route::get('blog',PostController::class . '@index');
或
Route::get('blog',\App\Http\Controllers\PostController::class . '@index');
有了這個,如果找不到文件/有錯字,任何體面的 IDE 都應該發出某種警告
編輯:
你的文件應該有這樣一行
namespace App\Http\Controllers;
在文件開始時, <?php declare(strict_types = 1);
<?php
或<?php declare(strict_types = 1);
如果您使用的是 php7 嚴格模式
打開 App\\Providers\\RouteServiceProvider.php 並取消注釋行:
protected $namespace = 'App\\Http\\Controllers';
謝謝,這個方法對我有幫助!
如果你使用 laravel 8.* 然后打開 App->Providers>RouteServiceProvider.php 並取消注釋這一行:
受保護的 $namespace = 'App\\Http\\Controllers';
這發生在我從 Laravel 7.x 升級到 8.x 時。 我的解決方法是更改我的路由:
Route::resource('posts', 'PostController');
到:
Route::resource('posts', \App\Http\Controllers\PostController::class);
或者如果您導入 PostController 類:
Route::resource('posts', PostController::class);
從 Laravel 7.x 升級到 8.x 指南中解釋了此更改的原因: https ://laravel.com/docs/8.x/upgrade#routing
它解釋說它 8.x 支持允許路由聲明使用標准的 PHP 可調用語法。 另一種解決方案是其他人提到的,並添加受保護的 $namespace = 'App\\Http\\Controllers'; 到RouteServiceProvider 。
簡單地說,您必須將 class 添加到routes\web.php文件中,如下所示:
use App\Http\Controllers\PostController;
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