How to obtain three level model data laravel - php

Question

Updated
User model
class User extends Authenticatable
{
use HasFactory, Notifiable, HasApiTokens, HasRoles;
const MALE = 'male';
const FEMALE = 'female';
protected $guard_name = 'sanctum';
public function educationalBackgrounds()
{
return $this->hasMany("App\Models\Users\EducationalBackground", "user_id");
}
public function seminars()
{
return $this->hasMany("App\Models\Users\Seminar", "user_id");
}
}
I have child table EducationalBackground which is related to User table
class EducationalBackground extends Model
{
use HasFactory;
protected $table = 'users.educational_backgrounds';
protected $fillable = [
'user_id',
'studies_type',
'year',
'course',
];
public function user()
{
return $this->belongsTo('App\Models\User', 'user_id');
}
public function educationalAwards()
{
return $this->hasMany("App\Models\Users\EducationalAward", "educational_background_id");
}
}
And a third table that i want to access the award field
class EducationalAward extends Model
{
use HasFactory;
protected $table = 'users.educational_awards';
protected $fillable = [
'educational_background_id',
'award',
'photo',
];
public function educationalBackground()
{
return $this->belongsTo('App\Models\Users\EducationalBackground', 'educational_background_id');
}
}
I have api get route here
Route::get('/educational-background/{id}', [UserProfileController::class, 'getEducationalBackground']);
Here is my api method it works fine. But i want to go deeper and access the data of third table.
public function getEducationalBackground($id)
{
$educationalBackground = EducationalBackground::with('user')->where('user_id', $id)->get();
return response()->json($educationalBackground, 200);
}

Answer 1

It looks like you're not really grasping the concept of relations yet. Also, I'd advise you to look into route model binding :) What you basically want to be doing is:
public function getEducationalBackground($id)
{
$user = User::find($id);
return $user->educationalBackgrounds()->with('educationalAwards')->get();
}
Also, when you're pretty sure that whenever you want to use backgrounds, you also want to use the awards, you can add the with(...) to the model definition like so:
class EducationalBackground extends Model
{
...
protected $with = ['educationalAwards'];
}
That way, you can simplify your controller method to:
public function getEducationalBackground($id)
{
$user = User::find($id);
return $user->educationalBackgrounds;
}