Basically, I want to solve this error
Call to a member function comments() on null
I am trying to make a system on my site whereby users can post,view post comment on posts and reply.
When a user comments on http://127.0.0.1:8000/post/show/6
for example,it is meant to go to http://127.0.0.1:8000/comment/store
insert the comments into the database and then show the comments
BUT what currently happens is that after typing the comment in http://127.0.0.1:8000/post/show/6
it directs to http://127.0.0.1:8000/comment/store
it show this error on laravel'S PrettyPageHandler:
Call to a member function comments() on null
I have no clue what I'm doing wrong.
Please help
These are my code:
PostController.php
<?php
// PostController.php
namespace App\Http\Controllers;
use App\Post;
use Illuminate\Http\Request;
use Auth;
use Stevebauman\Location\Facades\Location;
class PostController extends Controller
{
protected $fillable = [
'Uploader',
];
public function __construct()
{
return $this->middleware('auth');
}
public function create()
{
return view('post');
}
public function store(Request $request)
{
{
$post = new Post;
$post->title = $request->get('title');
$post->type = $request->get('type');
$post->description = $request->get('description');
$post->body = $request->get('body');
$post->UniqueId = str_random(16);
$post->Uploader = Auth::user()->name;
$post->Language = 'en';
$post->Location=Location::get()->countryCode;
$post->views = 0;
$post->Applauds = 0;
$post->Boos = 0;
$post->Tags = "hey";
if ($request->get('agegroup')) {
$post->agegroup = $request->get('agegroup');
} else {
$post->agegroup ='undefined';
}
$post->AllowComments = 'true';
$post->CommentsBg = 'default';
$post->Visibility = 'globally public';
$post->others = 'embeddable';
$post->save();
return redirect('posts');
}
}
public function index()
{
$posts = Post::all();
return view('index', compact('posts'));
}
public function show($id)
{
$post = Post::find($id);
return view('show', compact('post'));
}
}
CommentController.php
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Comment;
use App\Post;
class CommentController extends Controller
{
public function store(Request $request)
{
$comment = new Comment;
$comment->body = $request->get('comment_body');
$comment->user()->associate($request->user());
$post = Post::find($request->get('post_id'));
$post->comments()->save($comment);
return back();
}
}
Web.php
/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/
Route::get('/', function () {
return view('welcome');
});
Auth::routes();
Route::get('logout', '\App\Http\Controllers\Auth\LoginController@logout');
Route::get('/home', 'HomeController@index')->name('home');
Route::get('/admin', 'AdminController@index')->name('admin');
Route::get('/upload', 'UploadController@index')->name('upload');
Route::get('/post/create', 'PostController@create')->name('post.create');
Route::post('/post/store', 'PostController@store')->name('post.store');
Route::get('/posts', 'PostController@index')->name('posts');
Route::get('/post/show/{id}', 'PostController@show')->name('post.show');
Route::post('/comment/store', 'CommentController@store')->name('comment.add');
Route::post('/reply/store', 'CommentController@replyStore')->name('reply.add');
Route::match(['get', 'post'], 'imageupload', 'ImageController@Image');
Route::delete('delimage/{filename}', 'ImageController@Image');
post.blade.php
@extends('layouts.app')
@section('content')
<div class="container">
<div class="row justify-content-center">
<div class="col-md-8">
<div class="card">
<div class="card-header">Create Post</div>
<div class="card-body">
<form method="post" action="{{ route('post.store') }}">
<div class="form-group">
@csrf
<label class="label">Post Title: </label>
<input type="text" name="title" class="form-control" required/>
</div>
<label class="label">Post Type </label>
<input type="text" name="type" class="form-control" required/>
<label class="label">Tags </label>
<input type="text" name="tags" class="form-control" required/>
<label class="label">Age-group(optional) </label>
<input type="text" name="agegroup" class="form-control" required/>
<div class="form-group">
<label class="label">Post Description </label>
<textarea name="description" rows="5" cols="20" class="form-control" required></textarea>
</div>
<div class="form-group">
<label class="label">Post Body: </label>
<textarea name="body" rows="10" cols="30" class="form-control" required></textarea>
</div>
<div class="form-group">
<input type="submit" class="btn btn-success" />
</div>
</form>
</div>
</div>
</div>
</div>
</div>
@endsection
show.blade.php
<!-- show.blade.php -->
@extends('layouts.app')
@section('content')
<div class="container">
<div class="row justify-content-center">
<div class="col-md-8">
<div class="card">
<div class="card-body">
<p><b>{{ $post->title }}</b></p>
<p>
{{ $post->body }}
</p>
<hr />
<h4>Display Comments</h4>
@foreach($post->comments as $comment)
<div class="display-comment">
<strong>{{ $comment->user->name }}</strong>
<p>{{ $comment->body }}</p>
</div>
@endforeach
<hr />
<h4>Add comment</h4>
<form method="post" action="{{ route('comment.add') }}">
@csrf
<div class="form-group">
<input type="text" name="comment_body" class="form-control" />
<input type="hidden" name="post_id" value="{{ $post->id }}" />
</div>
<div class="form-group">
<input type="submit" class="btn btn-warning" value="Add Comment" />
</div>
</form>
</div>
</div>
</div>
</div>
</div>
@endsection
index.blade.php
@extends('layouts.app')
@section('content')
<div class="container">
<div class="row justify-content-center">
<div class="col-md-8">
<table class="table table-striped">
<thead>
<th>ID</th>
<th>Title</th>
<th>Action</th>
</thead>
<tbody>
@foreach($posts as $post)
<tr>
<td>{{ $post->Id }}</td>
<td>{{ $post->title }}</td>
<td>
<a href="{{ route('post.show', ['id' => $post]) }}" class="btn btn-primary">Show Post</a>
</td>
</tr>
@endforeach
</tbody>
</table>
</div>
</div>
</div>
@endsection
I guess the problem is in this part of the CommentController.php code:
$post = Post::find($request->get('post_id'));
$post->comments()->save($comment);
Your assumption is that in the first line Post::find()
returns a new Post object. Clearly it doesn't. Why? I can't tell, but probably because the ID doesn't exist?
You could check for this by doing:
$post = Post::find($request->get('post_id'));
if (!is_object($post)) echo "Yeah, I really have a problem here...";
$post->comments()->save($comment);
hi this is because you're not retrieving the inputs correctly ..
class CommentController extends Controller
{
public function store(Request $request)
{
$comment = new Comment;
$comment->body = $request->comment_body;
$comment->user()->associate($request->user());
$post = Post::find($request->post_id);
$post->comments()->save($comment);
return back();
}
}
instead of using $request->get('field_name')
just use $request->field_name
EDIT NOTES:
your form method is post .. you might as well use $request->post('field_name')
if that function exists .. there are lot of ways to retrieve inputs but as written in my answer i used $request->field_name
..
and why you're getting that error is because the Post::find(null/undefined) returns null ..
You have this error because when you do:
$post = Post::find($request->get('post_id'));
You find nothing, so $post is null. Thus you should find out why. Try to debug and see what $request->get('post_id') contains. Maybe it contains the wrong post id or maybe it has nothing inside of it.
If that the case I think the answer would be to do:
$post = Post::find($request->input('post_id'));
Regards
I got it.
I HAD TO CHANGE post_id
to post_Id` and vice-versa as in:
CommentController.php
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Comment;
use App\Post;
class CommentController extends Controller
{
public function store(Request $request)
{
$comment = new Comment;
$comment->body = $request->comment_body;
$comment->user()->associate($request->user());
$post = Post::find($request->post_id);
$post->comments()->save($comment);
return back();
}
}
And in
show.blade.php
<!-- show.blade.php -->
@extends('layouts.app')
@section('content')
<div class="container">
<div class="row justify-content-center">
<div class="col-md-8">
<div class="card">
<div class="card-body">
<p><b>{{ $post->title }}</b></p>
<p>
{{ $post->body }}
</p>
<hr />
<h4>Display Comments</h4>
@foreach($post->comments as $comment)
<div class="display-comment">
<strong>{{ $comment->user->name }}</strong>
<p>{{ $comment->body }}</p>
</div>
@endforeach
<hr />
<h4>Add comment</h4>
<form method="post" action="{{ route('comment.add') }}">
@csrf
<div class="form-group">
<input type="text" name="comment_body" class="form-control" />
<input type="hidde" name="post_id" value="{{ $post->Id }}" />
</div>
<div class="form-group">
<input type="submit" class="btn btn-warning" value="Add Comment" />
</div>
</form>
</div>
</div>
</div>
</div>
</div>
@endsection
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