laravel relaion many to many - laravel

Question

hello family I am working on a school management project but I have a problem with relations:
I have a table of years, students, level
now a pupil can register only once in a level during a school year,
during a school year several pupils can register for a level
table eleves belongToMany table niveaux
table niveau belongToMany table eleves
table eleve_niveau belongTo table annees
table annees has many eleve_niveau
Now at the level of my models I made his:
model annee
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
/**
* #property integer $id
* #property string $debut_annee
* #property string $fin_annee
* #property string $annee_scolaire
* #property string $created_at
* #property string $updated_at
* #property EleveNiveau[] $eleveNiveaus
* #property Niveau[] $niveauxes
*/
class Annee extends Model
{
/**
* The "type" of the auto-incrementing ID.
*
* #var string
*/
protected $keyType = 'integer';
/**
* #var array
*/
protected $fillable = ['debut_annee', 'fin_annee', 'annee_scolaire', 'created_at', 'updated_at'];
/**
* #return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function eleveNiveaus()
{
return $this->hasMany('App\EleveNiveau');
}
/**
* #return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function niveauxes()
{
return $this->hasMany('App\Niveau');
}
}
model niveau
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
/**
* #property integer $id
* #property integer $annee_id
* #property string $nom_niveau
* #property string $branche
* #property string $created_at
* #property string $updated_at
* #property Annee $annee
* #property EleveNiveau[] $eleveNiveaus
*/
class Niveau extends Model
{
/**
* The "type" of the auto-incrementing ID.
*
* #var string
*/
protected $keyType = 'integer';
/**
* #var array
*/
protected $fillable = ['annee_id', 'nom_niveau', 'branche', 'created_at', 'updated_at'];
/**
* #return \Illuminate\Database\Eloquent\Relations\BelongsTo
*/
public function annee()
{
return $this->belongsTo('App\Annee');
}
/**
* #return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function eleveNiveaus()
{
return $this->hasMany('App\EleveNiveau');
}
}
model eleves
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
/**
* #property integer $id
* #property string $pv
* #property string $nom
* #property string $prenom
* #property string $created_at
* #property string $updated_at
* #property EleveNiveau[] $eleveNiveaus
*/
class Eleve extends Model
{
/**
* The "type" of the auto-incrementing ID.
*
* #var string
*/
protected $keyType = 'integer';
/**
* #var array
*/
protected $fillable = ['pv', 'nom', 'prenom', 'created_at', 'updated_at'];
/**
* #return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function eleveNiveaus()
{
return $this->hasMany('App\EleveNiveau', 'eleve_id');
}
}
I did a model for the pivot table
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
/**
* #property integer $eleve_id
* #property integer $niveau_id
* #property integer $annee_id
* #property string $date_inscription
* #property string $created_at
* #property string $updated_at
* #property Annee $annee
* #property Elefe $elefe
* #property Niveau $niveau
*/
class EleveNiveau extends Model
{
/**
* The table associated with the model.
*
* #var string
*/
protected $table = 'eleve_niveau';
/**
* #var array
*/
protected $fillable = ['date_inscription', 'created_at', 'updated_at'];
/**
* #return \Illuminate\Database\Eloquent\Relations\BelongsTo
*/
public function annee()
{
return $this->belongsTo('App\Annee');
}
/**
* #return \Illuminate\Database\Eloquent\Relations\BelongsTo
*/
public function elefe()
{
return $this->belongsTo('App\Elefe', 'eleve_id');
}
/**
* #return \Illuminate\Database\Eloquent\Relations\BelongsTo
*/
public function niveau()
{
return $this->belongsTo('App\Niveau');
}
}
the problem I can't manage to insert into the pivot table I don't know which model to start with
if I use the high model to register a pupil at a level, I have to go through the pivot model
is there a possibility ????

Answer 1

Did you reed the documentaion? Which version of laravel are you using?

Answer 2

I use version 7 in laravel
I read the laravel documentation I found an attached method so at the level of my models I went
the foreign key attribute has my two models
hasMany('App\EleveNiveau', 'eleve_id');
// }
public function niveaux()
{
return $this->belongsToMany(Niveau::class)->withPivot('annee_id');
}
}
belongsTo('App\Annee');
}
/**
* #return \Illuminate\Database\Eloquent\Relations\HasMany
*/
// public function eleveNiveaus()
// {
// return $this->hasMany('App\EleveNiveau');
// }
public function eleves()
{
return $this->belongsToMany(Eleve::class)->withPivot('annee_id');
}
}
I think it works now there is another method to manage a pivot table which contains 3 secondary keys