ldc-dam/app/Models/Variante.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Variante extends Model
{
    /**
     * The primary key associated with the table.
     *
     * @var string
     */
    protected $primaryKey = 'codeVariante';

    /**
     * Get the sujet that owns the variante.
     */
    public function sujet()
    {
        return $this->belongsTo('App\Models\Sujet', 'sujet_id');
    }

    /**
     * Get the typeVue that owns the variante.
     */
    public function typeVue()
    {
        return $this->belongsTo('App\Models\Typevue', 'typevue_id');
    }
}