Laravel中的资源控制器概念

如何解决Laravel中的资源控制器概念

当我学习laravel时，我无法理解，当我尝试通过在URL中键入posts / edit（该文件位于resource / views / posts中）来访问我的edit.blade.php页面时， 它正在调用show方法并在该页面上打印“ show”，并且如果我键入posts / posts / edit，则将显示edit.blade.php（如下所述）。请在这里指导我我在做什么错

edit.blade.php

@extends('main')
@section('content')
<h1>Update Post</h1>
<form method="POST" action="{{route('posts.update',$post) }}"  >
    @method('PUT')
    @csrf
    <input type="text" name="title"><br><br>
    <input type="text" name="body"><br><br>
    <button type="submit" class="btn btn-primary">Update</button>
</form>
@endsection

PostController.php（资源控制器）

    <?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\posts;
use Sessions; 


class PostController extends Controller
{ 
    public function create()
    {
        return view('posts.create');   
    }

    public function store(Request $request)
    {
       $post = new posts;
        $post->title = $request->input('title');
        $post->body = $request->input('body');
        $post->save();
        return redirect('posts/read');
    }

    public function show($data)
    {
       echo "show";
    }

    public function edit($id)
    {
        return view('posts.edit');
    }

    public function update(Request $req,$id)
    {
        echo posts::where('title',$req->title)
        ->update(['body'=>$req->body]);
        return redirect('/');
    }

    public function destroy($id)
    {
        $post = posts::find($id);
        $post->delete();
        return redirect('/');

    }
}

路线：

Route::resource('posts','PostController');

解决方法

您的路线如下：

GET posts/{post}/edit    EDIT
GET posts/{post}         SHOW

因此URI posts/edit与SHOW路由匹配：

posts/edit             posts/{post}
                       posts/edit

URI posts/posts/edit与EDIT路由匹配：

posts/posts/edit       posts/{post}/edit
                       posts/posts /edit

这是预期的，以及如何设置路由。

Laravel 7.x Docs - Controllers - Resource Conrollers

,

首先，您要像这样更改控制器

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Post;
use Sessions; 


class PostController extends Controller
{ 
    public function create()
    {
        return view('posts.create');   
    }

    public function store(Request $request)
    {
        $post = new Post;
        $post->title = $request->input('title');
        $post->body = $request->input('body');
        $post->save();
        return redirect('posts/read');
    }

    public function show($id)
    {
       $post = Post::find($id);
       return view(posts.show,['post' => $post]);
    }

    public function edit($id)
    {
       $post = Post::find($id);
       return view(posts.edit,['post' => $post]);
    }

    public function update(Request $request,$id)
    {
        dd($request->all()); //check before update
    }

    public function destroy($id)
    {
        $post = Post::find($id);
        $post->delete();
        return redirect('/');

    }
}

在您的$post->id中添加route以形成edit.blade.php

@extends('main')
@section('content')
<h1>Update Post</h1>
<form method="POST" action="{{route('posts.update',$post->id) }}"  >
    @method('PUT')
    @csrf
    <input type="text" name="title"><br><br>
    <input type="text" name="body"><br><br>
    <button type="submit" class="btn btn-primary">Update</button>
</form>
@endsection

然后您在show.blade.php文件夹中创建view/posts并将此代码放入show.blade.php

@extends('main')
@section('content')
<h1>Show Post</h1>
<h1>{{ $post->title }}</h1> 
<p>{{ $post->body }}</p> 
@endsection