What's New features and improvements in Laravel 6

What's New features and improvements in Laravel 6

What's New features and improvements in Laravel 6

With every new version, Laravel has huge update that is very typical with other young framework. Laravel 6 comes with fresh website design along with new improvements with lazy collections, eloquent subquery additions and many more.

September 3rd, 2019 is the release date of Laravel 6.

I am going to list some new features that has been introduced with Laravel 6.

Lazy Collections

Lazy collection is a class that provides an iterators to iterate on the items of array. It is basically designed for keep memory usage low by the application.

Let's take an example of the application where you will have to work with large database and you need to fetch thousands/lakhs records for specific reason may be for the excel file in order to generate reports and if you run Laravel Eloquent all() method then most possibly it will throw out of memory exception because it fetch all the records and store into the memory.

To solve this problem, Laravel 6 come up with powerful solution query builder’s cursor method that returns a LazyCollection instance.

$users = App\User::cursor();

foreach ($users as $user) {
   # code...
}

You can also use the lazy collection to filter data from the collection class :

$users = App\User::cursor()->filter(function ($user) {
    return $user->id > 100;
});

foreach ($users as $user) {
    # code...
}

Filter callback function will execute only when we iterate the each user.

String & Array Helpers Package

Earlier you have had the access of the string and array helpers method in Laravel application by default but with Laravel 6, All str_ and array_ helpers have been moved to the new laravel/helpers Composer package and removed from the framework.

You can use these helper methods in Laravel 6 by running the following composer command :

composer require laravel/helpers

If you don't install the package for helper then you will get following type of errors :

Call to undefined function str_ or Call to undefined function array_
Eliminated Carbon 1.x version and added Carbon 2.0

Carbon 1.x has been removed from Laravel 6 and now Carbon 2 is officially supported by Laravel. Laravel 6 does not provide any support for the 1.x release of Carbon.

The BelongsTo::update Method

This is one of the new features in Laravel 6, It gives you mass assignment protection on belongs to update method.

If you want to update a model attached via a BelongsTo relationship and you get mass assignment update protection and events then you should call the update method in following way :

/* Without mass assignment protection */

$article->user()->update(['foo' => 'bar']);

   

/* With mass assignment protection */

$article->user->update(['foo' => 'bar']);
Eloquent Subquery Enhancements

Laravel adds support for subqueries to both select and addSelect query methods.

Let's take an example of a user table and a post table. User will contains multiple post and I have to select all of the users and their recent post using a single eloquent query :

return User::addSelect(['last_post' => Post::select('title')
    ->whereColumn('user_id', 'users.id')
    ->orderBy('created_at', 'desc')
    ->limit(1)
])->get();

This is really an awesome feature that will help you a lot where you need to write subquery.

You can also do the same job with query builder :

return User::addSelect(['last_post' => function ($query) {
    $query->select('title')
        ->from('posts')
        ->whereColumn('user_id', 'users.id')
        ->orderBy('created_at', 'desc')
        ->limit(1);
}])->get();
Declaration Of Primary Key Type

Considering performance optimizations, the integer type key is best solution for primary key. Laravel 6 has updates to set primary key on your model so if you are using string as model's primary key, you can declare it using the $keyType property on your model.

/**
 * The "type" of the primary key ID.
 *
 * @var string
 */
protected $keyType = 'string';

Phone: (+91) 8800417876
Noida, 201301
okey metin2 pvp serverler metin2 pvp
ataşehir escort maltepe escort bostancı escort kadıköy escort maltepe escort ataşehir escort tuzla escort pendik escort ümraniye escort kartal escort
pendik escort
izmir escort izmir escort izmir escort izmir escort denizli escort antalya escort antalya escort antalya escort izmir escort izmir escort izmir escort izmir escort izmir escort
hatay escort nevsehir escort nigde escort kirikkale escort batman escort osmaniye escort kirklareli escort tokat escort rize escort adiyaman escort gumushane escort batman escort
cialis satış cialis fiyat cialis 20 mg cialis 100 mg cialis 5 mg fiyat

viagra fiyatı

viagra 100 mg fiyat

viagra sipariş

orjinal viagra

viagra satın al

izmir escort
kocaeli escort izmit escort bayan gebze escort izmit sınırsız escort escort bursa tuzla escort aydınlı escort orhanlı escort bursa escort escort bayan istanbul escort istanbul sınırsız escort istanbul bayan escort izmit escort izmit escort kocaeli escort sisli escort mecidiyekoy escort bursa escort bayan bursa görükle escort maltepe escort goztepe escort yakacik-yeni-escort bursa sınırsız escort sisli escort bayan taksim escort bursa escort porno izle sikiş izle atasehir escort antalya escort
ankara escort marmaris escort bursa escort mersin escort antalya escort izmir escort samsun escort bodrum escort çeşme escort kuşadası escort adana escort eskişehir escort gaziantep escort esenyurt escort pendik escort tuzla escort fatih escort ümraniye escort mecidiyeköy escort kartal escort bahçelievler escort bahçeşehir escort ataşehir escort bakırköy escort nişantaşı escort avcılar escort büyükçekmece escort kurtkoy escort konya escort beşiktaş escort taksim escort beylikdüzü escort malatya escort sakarya escort şişli escort maltepe escort kadıköy escort ataköy escort bostancı escort şirinevler escort bağcılar escort üsküdar escort etiler escort başaksehir escort ortaköy escort kağıthane escort sultangazi escort halkalı escort çekmeköy escort şaşkınbakkal escort mamak escort sincan escort keçiören escort çankaya escort beypazarı escort akyurt escort pursaklar escort kahramankazan escort göztepe escort alsancak escort bornova escort buca escort karabaglar escort karşıyaka escort konak escort narlıdere escort izmit escort başiskele escort kandira escort körfez escort karamürsel escort dilovası escort gölcük escort gebze escort kocaeli escort kayseri escort elazığ escort denizli escort diyarbakir escort adana escort ankara escort izmir escort antalya escort gaziantep escort kayseri escort konya escort mersin escort denizli escort kocaeli escort diyarbakır escort