Der folgende Code könnte die Ergebnisse so abrufen, wie Sie es wollten. Code-Erklärung in-line.
if($request->input("postcode"))
{
$curl = curl_init();
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_URL, "http://api.postcodes.io/postcodes/" . $request->input('postcode'));
$result = json_decode(curl_exec($curl));
curl_close($curl);
$postcode_lat = $result->result->latitude;
$postcode_long = $result->result->longitude;
$query = DB::table('dogs');
//Join statement responsible for retrieving dogs addresses based on latitude and longitude in address table.
$query->join(DB::raw('(SELECT dog_id, (
3959 * acos (
cos ( radians($postcode_lat) )
* cos( radians( lat ) )
* cos( radians( long ) - radians($postcode_long) )
+ sin ( radians($postcode_lat) )
* sin( radians( lat ) )
)
)AS distance from dog_addresses) as dog_addresses'), function ($join){
$join->on('dogs.id', '=', 'dog_addresses.dog_id')
});
$query->leftJoin('dog_videos','dogs.id','=','dogs_videos.dog_id');
$query->leftJoin('dogs_breeds','dogs.breed_id','=','dogs_breeds.id');
if($request->input("breed") && $request->input("breed") != "" && $request->input("breed") != "any")
{
$breed = Dog_Breed::where("breed_name", $request->input("breed"))->first();
$query->where('dogs.breed_id', $breed->id);
}
$results = $query->orderBy('dog_addresses.distance', 'ASC') //Ordering the results in ascending order by calculated distance
->limit(20) //Limiting the results to 20 . Can be changed or removed according to your needs
->get(); //Retrieving the results
}
