ErrorException (E_ERROR) :Trying to get property of non-object. when i trying implode array to string in index.blade.php - laravel

Question

index.blade.php
#php
$p = [];
foreach($p->genres as $genre){
$genres[] = $genre->genres;
}
$genre = implode(",", $genres);
#endphp
<span>{{$genre}}</span>
Controller
public function index()
{
$series = Series::all();
return view('admin/series/index',['series' => $series]);
}
model Genres.php
class Genres extends Model
{
protected $primarykey= 'id';
protected $fillable = ['genres'];
public function series()
{
return $this->belongsToMany(Series::class);
}
}
Model Series.php
class Series extends Model
{
protected $table = 'series';
protected $primarykey='id';
protected $fillable = ['title','country','japanese','year','synonyms','trailer','image','network','rating','duration','genres','aired','directors','screenwriters','score','type','episode','synopsis'];
public function genres(){
return $this->belongsToMany(Genres::class);
}
}
I want to display data from different databases using multiple table relationships, but the data is still a compilation array to bring it up.
and compilation I asked a friend. I was told to use a code like the one in index.blade.php. and return like this
ErrorException (E_ERROR) Try to get properties that are not objects

Answer 1

You are accessing array with -> whereas only the object can be accessed with arrow. To access array keys you have to use $array['key'] approach.
Arrays and objects are two different data types, so to access their inner data, you've to use their respective approaches.

Answer 2

You are looping wrong variables/collections. You need to make some changes to make it work. Below code should solve your problem.
#php
$p = [];
foreach($series as $ser){
foreach($ser->genres as $genre){
$p[] = $genre->genres;
}
}
$gen = implode(",", $p);
#endphp
<span>{{$gen}}</span>

Answer 3

You are setting series from the controller so inside the view you must loop over the series first.
#foreach($series as $s){
// then your code should be take place.
#php
$genres = [];
foreach($s->genres as $genre){
$genres[] = $genre->genres;
}
$genre = implode(",", $genres);
#endphp
<span>{{$genre}}</span>
#endforeach