how to get the value of foreign key in Laravel - php

Question

I have a problem with Laravel model relationships. I need to let users create new trucks. However, I need to store manufacturer's field as an id, not a title. So I decided to make two tables (manufacturers and trucks) that have one to many relationship (manufacturers have multiple trucks while one truck has one manufacturer).
Here's the migrations files.
Manufacturers table:
public function up()
{
Schema::create('manufacturers', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('manufacturer');
$table->timestamps();
});
}
Trucks table:
public function up()
{
Schema::create('trucks', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('make_id');
$table->unsignedInteger('year');
$table->string('owner');
$table->unsignedInteger('owner_number')->nullable();
$table->text('comments')->nullable();
$table->foreign('make_id')->references('id')->on('manufacturers');
$table->timestamps();
});
}
Manufacturer.php model:
namespace App;
use Illuminate\Database\Eloquent\Model;
class Manufacturer extends Model
{
/**
* #var string
*/
protected $table = 'manufacturers';
/**
* #var array
*/
protected $fillable = [
'manufacturer',
];
public function trucks(){
return $this->hasMany(Truck::class);
}
}
Truck.php model:
namespace App;
use Illuminate\Database\Eloquent\Model;
class Truck extends Model
{
/**
* #var string
*/
protected $table = 'trucks';
/**
* #var array
*/
protected $fillable = [
'make_id', 'year', 'owner', 'owner_number', 'comments',
];
public function manufacturer(){
return $this->belongsTo(Manufacturer::class);
}
}
Controller file:
public function index()
{
$trucks = Truck::all();
return view('trucks.index')->with('trucks', $trucks);
}
index.blade.php
#foreach($trucks as $truck)
<tbody>
<tr>
<td>{{$truck->make_id}}</td> //I need this one to show manufacturers title
<td>{{$truck->year}}</td>
<td>{{$truck->owner}}</td>
<td>{{$truck->owner_number}}</td>
<td>{{$truck->comments}}</td>
</tr>
</tbody>
#endforeach
This view now shows the id. What I need to do to show manufacturers title(manufacturers.manufacturer) instead of the id? Thank you all in advance!

Answer 1

Your foreign key for manufacturer in trucks table is not manufacturer_id. In this case you need to declare it in your models:
return $this->belongsTo(Manufacturer::class, 'make_id' )
And
return $this->hasMany(Truck::class, 'make_id' )