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

2 votes227 views2 answers
Laravel collection push
PHP Laravel
5 votes231 views2 answers
Laravel migration price
PHP Laravel
1 vote216 views1 answer
Enablequerylog laravel
PHP Laravel
1 vote218 views1 answer
Laravel emial unique igration error
PHP Laravel
4 votes230 views3 answers
Laravel on delete set null
PHP Laravel
1 vote229 views1 answer
Where date laravel
PHP Laravel
0 vote233 views3 answers
Laravel has many deep
PHP Laravel
2 votes271 views4 answers
Foreach in laravel
PHP Laravel
6 votes217 views2 answers
Laravel route regex except
PHP Laravel
4 votes272 views3 answers
Laravel description substring
PHP Laravel