I have places
and locations
tables. Place could have many locations. Location belongs to Place.
Place: id
title
Location: id
place_id
floor
lat
lon
class Location extends Model {
public function place()
{
return $this->belongsTo('App\Place');
}
}
And
class Place extends Model {
public function locations()
{
return $this->hasMany('App\Location');
}
}
And i need to find places, that belongs only to 1st floor. select * from places inner join locations on places.id = locations.place_id where locations.floor = 1
How does it should be done in Eloquent?
Is something similar to Place::where('locations.floor', '=', 1)->get()
exists?
Yes, i know there is whereHas
:
Place::whereHas('locations', function($q)
{
$q->where('floor', '=', 1);
})->get()
but it generates a bit complex query with counts:
select * from `places` where (select count(*) from `locations` where `locations`.`place_id` = `places`.`id` and `floor` = '1') >= 1
does not this works?
class Location extends Model {
public function place()
{
return $this->belongsTo('App\Place');
}
}
$locations = Location::where('floor', '=', 1);
$locations->load('place'); //lazy eager loading to reduce queries number
$locations->each(function($location){
$place = $location->place
//this will run for each found location
});
finally, any orm is not for database usage optimization, and it is not worth to expect nice sql's produced by it.
I haven't tried this, but you have eager loading and you can have a condition:
$places = Place::with(['locations' => function($query)
{
$query->where('floor', '=', 1);
}])->get();
Try this :
Place::join('locations', 'places.id', '=', 'locations.place_id')
->where('locations.floor', 1)
->select('places.*')
->get();
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