tercul-backend/internal/data/sql/city_repository.go

package repositories

import (
	"context"
	"gorm.io/gorm"
	"tercul/internal/models"
)

// CityRepository defines CRUD methods specific to City.
type CityRepository interface {
	BaseRepository[models.City]
	ListByCountryID(ctx context.Context, countryID uint) ([]models.City, error)
}

type cityRepository struct {
	BaseRepository[models.City]
	db *gorm.DB
}

// NewCityRepository creates a new CityRepository.
func NewCityRepository(db *gorm.DB) CityRepository {
	return &cityRepository{
		BaseRepository: NewBaseRepositoryImpl[models.City](db),
		db:             db,
	}
}

// ListByCountryID finds cities by country ID
func (r *cityRepository) ListByCountryID(ctx context.Context, countryID uint) ([]models.City, error) {
	var cities []models.City
	if err := r.db.WithContext(ctx).Where("country_id = ?", countryID).Find(&cities).Error; err != nil {
		return nil, err
	}
	return cities, nil
}