Horux_back/app/Models/Rfc.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Model;

class Rfc extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'rfc',
    ];

    public function users(): BelongsToMany
    {
        return $this->belongsToMany(User::class);
    }

    public function managerOTP(): HasMany
    {
        return $this->hasMany(ManagerOTP::class);
    }

    public function invoices(): HasMany
    {
        return $this->hasMany(Invoice::class);
    }

    public function invoiceLines(): HasMany
    {
        return $this->hasMany(InvoiceLine::class);
    }

    public function invoicePayments(): HasMany
    {
        return $this->hasMany(InvoiceLine::class);
    }

    public function invoiceRequest(): HasMany
    {
        return $this->hasMany(InvoiceRequest::class);
    }

    public function taxpayers(): HasMany
    {
        return $this->hasMany(Taxpayer::class);
    }

    public function conciliations(): HasMany
    {
        return $this->hasMany(Conciliation::class);
    }
}