Laravel 7 Single row echo belongsToMany relationship - php

Question

I'm trying to display the value of brand_id column from brands table. Here's so far what I've done:
Car model
use App\Brand;
class Car extends Model
{
public function brands(){
return $this->belongsToMany(Brand::class);
}
}
Brand model
use App\Car;
class Brand extends Model
{
protected $fillable = [
'brand_name'
];
public function cars(){
return $this->hasMany(Car::class);
}
}
ShowroomController
use App\Car;
class ShowroomController extends Controller
{
public function details($name){
$data = Car::where('car_name' , '=', $name)->first();
if ($data == null){
return redirect(route('index'));
}else{
return view('showroom')->with('detail', $data);
}
}
}
showroom view
#if (isset($detail))
{{ $detail }}
{{ $detail->brands->brand_name }} //this doesn't work
#endif
Database
Brands table:
+----+------------+
| id | brand_name |
+----+------------+
| 1 | Brand1 |
| 2 | Brand2 |
+----+------------+
Cars table:
+----+----------+----------+
| id | car_name | brand_id |
+----+----------+----------+
| 1 | Car | 1 |
+----+----------+----------+
I got lost on this point. Is this the right way to do the belongstomany and hasmany relationship? Thanks.

Answer 1

Change
return $this->belongsToMany(Brand::class);
to
return $this->belongsTo(Brand::class); on the Car model
Also rename name function to brand. because car have only single brand
After it you can do $detail->brand->brand_name

Answer 2

Hi I know it seems simple, thanks to #Imboom I got a hint to fix my problem. I made some changes on Car model:
return $this->belongsToMany(Brand::class); to return $this->belongsTo(Brand::class)
rename name function to brand
Lastly, I just added 'brand_id' to specify the column in cars table.
public function brand(){
return $this->belongsTo(Brand::class,'brand_id');
}
In ShowroomController, I changed my return statement detail to car. See the code below:
public function details($name){
$data = Car::where('car_name' , '=', $name)->first();
if ($data == null){
return redirect(route('index'));
}else{
return view('showroom')->with('car', $data);
}
}
Then in showroom view, $car->brand->brand_name .
#if (isset($car))
{{ $car->car_name }}
{{ $car->brand->brand_name }} // Output is Brand1
#endif
Thank you!