I'm new to laravel and I'm learning it from laracast. Here is my problem, I'm creating a comment form and it's php code looks like this:

<section >
    <!-- Post form -->
    <form method="POST" action="/post/{{ $post->slug }}/comments" >
        @csrf
        <header >
            <img src="https://i.pravatar.cc/100?id={{ auth()->id() }}" alt="" width="40" height="40" >
            <h2 >Want to participate?</h2>
        </header>
        <div >
            <textarea 
             name="body"  
             cols="30" rows="10"
              placeholder="Quick,think of something to say!" ></textarea>
        </div>
    
        <div>
            <button type="submit" >Post</button>
        </div>
                        

this is the corresponding route:

Route::post('post/{post:slug}/comments',[PostCommentsController::class, 'store']);

                   

Controller:, and I suspect there could be something wrong here 'user_id'=> request()->user()->id, and I tried numerous ways for this approach like auth()->id, Auth::user()->id

<?php

namespace App\Http\Controllers;

use App\Models\Post;


class PostCommentsController extends Controller
{
    public function store(Post $post){

        
        request()->validate([
            'body'=>'required'
        ]);

        $post->comments()->create([
            'user_id'=> request()->user()->id,
            'body' => request('body')
        ]);

        return back();
    }
}

and this the migration table for comment

Schema::create('comments', function (Blueprint $table) {
            $table->id();
            $table->foreignId('post_id')->constrained()->cascadeOnDelete();
            $table->foreignId('user_id')->constrained()->cascadeOnDelete();
            $table->text('body');
            $table->timestamps();                       

migration table for post:

Schema::create('posts', function (Blueprint $table) {
    $table->id();
    $table->foreignId('user_id')->constrained()->cascadeOnDelete();
    $table->foreignId('category_id');
    $table->string('slug')->unique();
    $table->string('title');
    $table->text('excerpt');
    $table->text('body');
    $table->timestamps();
    $table->timestamp('published_at')->nullable();
});

If I click on post button I get the above error,tried my best to solve this problem but I couldn't. Can someone help me what's wrong with my code ?. My question may look naive as I'm new to stackoverflow community

CodePudding user response：

use this code for controller

class PostCommentsController extends Controller
{
public function store(Post $post){

    
    request()->validate([
        'body'=>'required'
    ]);

    $post->comments()->create([
        'user_id'=> optional(auth()->user())->id,
        'body' => request('body')
    ]);

    return back();
}
}

user must logged in

CodePudding user response：

first you must logged in

and in your route you must define your middleware if you are trying to get authenticated user's id like this

Route::post('post/{post:slug}/comments',[PostCommentsController::class, 'store'])->middleware('auth');

after that in your method/function inside controller use 'Request' class(not model class name) when you try to retrieve input from form

Laravel's 'Illuminate\Http\Request' class provides an object-oriented way to interact with the current HTTP request being handled by your application as well as retrieve the input, cookies, and files that were submitted with the request.

<?php

namespace App\Http\Controllers;

use App\Models\Post;
use Illuminate\Http\Request;  //don't forget this
    class PostCommentsController extends Controller
    {
    public function store(Request $request){
    
        
        request()->validate([
            'body'=>'required'
        ]);
    
        $post->comments()->create([
            'user_id'=> auth()->user()->id,
            'body' => request('body')
        ]);
    
        return back();
    }
    }