boursecu_server/app/Models/GoldCredit.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class GoldCredit extends Model
{
    protected $fillable = [
        'customer_id',
        'gold_amount',
        'months',
        'interest_type',
        'interest_value',
        'delivery_method',
        'status',
        'source',
        'total_interest_gold',
        'total_payable_gold',
        'paid_gold',
        'paid_rial',
        'created_by',
        'notes',
        'has_check',
        'has_contract',
        'check_note',
        'contract_note',
        'penalty_type',
        'penalty_amount',
        'grace_hours',
    ];

    protected $casts = [
        'gold_amount' => 'float',
        'interest_value' => 'float',
        'total_interest_gold' => 'float',
        'total_payable_gold' => 'float',
        'paid_gold' => 'float',
        'paid_rial' => 'integer',
        'has_check' => 'boolean',
        'has_contract' => 'boolean',
        'penalty_amount' => 'float',
    ];

    public function customer(): BelongsTo
    {
        return $this->belongsTo(Customer::class);
    }

    public function installments(): HasMany
    {
        return $this->hasMany(GoldCreditInstallment::class)->orderBy('installment_number');
    }

    public function creator(): BelongsTo
    {
        return $this->belongsTo(User::class, 'created_by');
    }
}