如何在eloquent ORM中处理mysql空间数据类型?这包括如何创建迁移,插入空间数据和执行空间查询。如果没有实际的解决方案,是否有任何解决方法?
我之前实现的一种解决方法是在模型上使用以下验证获得纬度和经度字段(请参阅Validator class):
$rules = array('latitude' => 'required|numeric|between:-90,90',
'longitude'=>'required|numeric|between:-180,180',)
魔法出现在模型的boot method上,它设置了空间点场的正确值:
/**
* Boot method
* @return void
*/
public static function boot(){
parent::boot();
static::creating(function($eloquentModel){
if(isset($eloquentModel->latitude, $eloquentModel->longitude)){
$point = $eloquentModel->geoToPoint($eloquentModel->latitude, $eloquentModel->longitude);
$eloquentModel->setAttribute('location', DB::raw("GeomFromText('POINT(" . $point . ")')") );
}
});
static::updated(function($eloquentModel){
if(isset($eloquentModel->latitude, $eloquentModel->longitude)){
$point = $eloquentModel->geoToPoint($eloquentModel->latitude, $eloquentModel->longitude);
DB::statement("UPDATE " . $eloquentModel->getTable() . " SET location = GeomFromText('POINT(" . $point . ")') WHERE id = ". $eloquentModel->id);
}
});
}
关于迁移,如@jhmilan所说,您始终可以使用Schema :: create和DB :: statement方法来自定义迁移。
Schema::create('locations', function($table){
$table->engine = "MYISAM";
$table->increments('id')->unsigned();
$table->decimal('latitude', 10, 8);
$table->decimal('longitude', 11, 8);
$table->timestamps();
});
/*Espatial Column*/
DB::statement('ALTER TABLE locations ADD location POINT NOT NULL' );
/*Espatial index (MYISAM only)*/
DB::statement( 'ALTER TABLE locations ADD SPATIAL INDEX index_point(location)' );
它可以使用https://github.com/grimzy/laravel-mysql-spatial
你可以使用:
namespace App;
use Illuminate\Database\Eloquent\Model;
use Grimzy\LaravelMysqlSpatial\Eloquent\SpatialTrait;
/**
* @property \Grimzy\LaravelMysqlSpatial\Types\Point $location
*/
class Place extends Model
{
use SpatialTrait;
protected $fillable = [
'name',
];
protected $spatialFields = [
'location',
];
}
然后您就可以在“位置”字段上运行查询。
存储您可能使用的模型:
$place1 = new Place();
$place1->name = 'Empire State Building';
$place1->location = new Point(40.7484404, -73.9878441);
$place1->save();
检索您应该使用的模型:
$place2 = Place::first();
$lat = $place2->location->getLat(); // 40.7484404
$lng = $place2->location->getLng(); // -73.9878441