PHP error: Undefined property: Illuminate\Database\Eloquent\Collection::$retails - php

Question

Hello I'm trying get my objects on laravel like this.
But I'm getting this error.
PHP error: Undefined property: Illuminate\Database\Eloquent\Collection::$retails on line 18
Also this is my code.
public function index(){
$retails = Auth::user()->companies->retails->all();
return view('retails/retails', compact('retails'));
}
Company Model
class Company extends Model
{
public function retails(){
$this->hasMany(Retail::class);
}
}
Retail Model
class Retail extends Model
{
public function company(){
return $this->belongsTo(Company::class);
}
}

Answer 1

You have many companies. That is why you get a collection from
Auth::user()->companies
When you call ->retails from the collection instance, you get the exception you wrote.
You have to eager load the companies with retails and then loop through them.
Like:
$u = auth()->user();
$u->load('companies.retails');
$userRetails = [];
$u->companies->each(function($company) use (&$userRetails) {
$userRetails = array_merge($userRetails, $company->retails->toArray());
});
$userRetails = collect($userRetails);
return view('retails/retails', compact('userRetails'));

Answer 2

According to your code, you're trying to access collection from a collection which is impossible, you should individually fetch a collection first and do your process
public function index(){
$companies = Auth::user()->companies;
foreach($companies as $company) {
$retails_arr[] = $company->retails;
}
$retails = collect($retails_arr); // Gives Collection or
// Or if you want to send array, try this
$retails = $retails_arr; // Gives Array
return view('retails/retails', compact('retails'));
}
Try this out hope this helps..