Verde-Web/app/Models/CityMunicipality.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;

class CityMunicipality extends Model
{
    use HasFactory, SoftDeletes;

    protected $table = 'cities_municipalities';

    public const TYPE_CITY = 'city';
    public const TYPE_MUNICIPALITY = 'municipality';
    public const TYPE_SUB_MUNICIPALITY = 'sub_municipality';

    protected $fillable = [
        'psgc_code',
        'code',
        'name',
        'province_id',
        'type',
        'is_capital',
        'classification',
    ];

    protected function casts(): array
    {
        return [
            'is_capital' => 'boolean',
        ];
    }

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

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