如何在雄辩的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,有什么解决方法吗?
发布于 2015-07-15 01:07:17
我之前实现的一个解决方法是在模型上使用以下验证的纬度和经度字段(请参阅Validator class):
$rules = array('latitude' => 'required|numeric|between:-90,90',
'longitude'=>'required|numeric|between:-180,180',)
神奇之处在于模型的boot method,它设置空间点域的正确值:
/**
* Boot method
* @return void
*/
public static function boot(){
parent::boot();
static::creating(function($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 = ". $eloquentModel->id);
}
});
}
关于迁移,就像@jhmilan所说的,你总是可以使用Schema::create和DB::statement方法来定制迁移。
Schema::create('locations', function($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)' );
发布于 2017-12-17 23:34:30
可以使用https://github.com/grimzy/laravel-mysql-spatial
您可以使用:
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',
];
}
然后你就可以在'location‘字段上运行查询了。
要存储模型,您可以使用:
$place1 = new Place();
$place1->name = 'Empire State Building';
$place1->location = new Point(40.7484404, -73.9878441);
$place1->save();
要检索应该使用的模型,请执行以下操作:
$place2 = Place::first();
$lat = $place2->location->getLat(); // 40.7484404
$lng = $place2->location->getLng(); // -73.9878441
https://stackoverflow.com/questions/30682538
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