Relationship in laravel

WhereHas site:https://laravel.com/docs/

use Illuminate\Database\Eloquent\Builder;

// Retrieve posts with at least one comment containing words like code%...
$posts = Post::whereHas('comments', function (Builder $query) {
    $query->where('content', 'like', 'code%');
})->get();

// Retrieve posts with at least ten comments containing words like code%...
$posts = Post::whereHas('comments', function (Builder $query) {
    $query->where('content', 'like', 'code%');
}, '>=', 10)->get();

Source: laravel.com

How to use where relationship laravel

Event::with(["owner", "participants" => function($q) use($someId){
    $q->where('participants.IdUser', '=', 1);
    //$q->where('some other field', $someId);
}])

Source: stackoverflow.com

Eloquent relationships

$roles = App\User::find(1)->roles()->orderBy('name')->get();

Source: laravel.com

Laravel how to query belongsTo relationship

$movies = Movie::whereHas('director', function($q) {
    $q->where('name', 'great');
})->get();

Source: stackoverflow.com

Relationship in laravel

N + 1
return new SongsCollection(Song::with('album')->get());

'songs' => SongResource::collection($this->whenLoaded($this->songs))

Laravel relationship

$comment = Post::find(1)->comments()
                    ->where('title', 'foo')
                    ->first();

Source: laravel.com

Similar codes

0 vote331 views1 answer
Users not having any role laravel spatie
PHP Laravel
0 vote264 views1 answer
Query builder laravel getmedia undefined method
PHP Laravel
2 votes278 views3 answers
Laravel public static variable
PHP Laravel
3 votes367 views6 answers
Email verification laravel
PHP Laravel
0 vote303 views1 answer
Laravel with callback
PHP Laravel
0 vote294 views1 answer
Appserviceprovider laravel auth user
PHP Laravel
0 vote295 views1 answer
Laravel seed timestamps columns
PHP Laravel
0 vote277 views1 answer
Laravel Undefined index: token on reset
PHP Laravel
1 vote304 views1 answer
How to pass data to controller in laravel
PHP Laravel
0 vote297 views1 answer
Laravel optional params
PHP Laravel