README.md

Laravel Like

👍 User-like features for Laravel Application.

Installing

composer require overtrue/laravel-like -vvv

Configuration

This step is optional

php artisan vendor:publish

Migrations

This step is also optional, if you want to custom likes table, you can publish the migration files:

php artisan vendor:publish

Usage

Traits

Overtrue\LaravelLike\Traits\Liker

use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Overtrue\LaravelLike\Traits\Liker;

class User extends Authenticatable
{
    use Liker;

    <...>
}

Overtrue\LaravelLike\Traits\Likeable

use Illuminate\Database\Eloquent\Model;
use Overtrue\LaravelLike\Traits\Likeable;

class Post extends Model
{
    use Likeable;

    <...>
}

API

$user = User::find(1);
$post = Post::find(2);

$user->like($post);
$user->unlike($post);
$user->toggleLike($post);

$user->hasLiked($post);
$post->isLikedBy($user);

Get user likes with pagination:

$likes = $user->likes()->with('likeable')->paginate(20);

foreach ($likes as $like) {
    $like->likeable; // App\Post instance
}

Get object likers:

foreach($post->likers as $user) {
    // echo $user->name;
}

with pagination:

$likers = $post->likers()->paginate(20);

foreach($likers as $user) {
    // echo $user->name;
}

Aggregations

// all
$user->likes()->count();

// with type
$user->likes()->withType(Post::class)->count();

// likers count
$post->likers()->count();

List with *_count attribute:

// likes_count
$users = User::withCount('likes')->get();

foreach($users as $user) {
    // $user->likes_count;
}

// likers_count
$posts = User::withCount('likers')->get();

foreach($posts as $post) {
    // $post->likes_count;
}

N+1 issue

To avoid the N+1 issue, you can use eager loading to reduce this operation to just 2 queries. When querying, you may specify which relationships should be eager loaded using the with method:

// Liker
$users = App\User::with('likes')->get();

foreach($users as $user) {
    $user->hasLiked($post);
}

// Likeable
$posts = App\Post::with('likes')->get();
// or
$posts = App\Post::with('likers')->get();

foreach($posts as $post) {
    $post->isLikedBy($user);
}

Of course we have a better solution, which can be found in the following section：

Attach user like status to likeable collection

You can use Liker::attachLikeStatus($likeables) to attach the user like status, it will attach has_liked attribute to each model of $likeables:

For model

$post = Post::find(1);

$post = $user->attachLikeStatus($post);

// result
[
    "id" => 1
    "title" => "Add socialite login support."
    "created_at" => "2021-05-20T03:26:16.000000Z"
    "updated_at" => "2021-05-20T03:26:16.000000Z"
    "has_liked" => true
 ],

For Collection | Paginator | LengthAwarePaginator | array:

$posts = Post::oldest('id')->get();

$posts = $user->attachLikeStatus($posts);

$posts = $posts->toArray();

// result
[
  [
    "id" => 1
    "title" => "Post title1"
    "created_at" => "2021-05-20T03:26:16.000000Z"
    "updated_at" => "2021-05-20T03:26:16.000000Z"
    "has_liked" => true
  ],
  [
    "id" => 2
    "title" => "Post title2"
    "created_at" => "2021-05-20T03:26:16.000000Z"
    "updated_at" => "2021-05-20T03:26:16.000000Z"
    "has_liked" => fasle
  ],
  [
    "id" => 3
    "title" => "Post title3"
    "created_at" => "2021-05-20T03:26:16.000000Z"
    "updated_at" => "2021-05-20T03:26:16.000000Z"
    "has_liked" => true
  ],
]

For pagination

$posts = Post::paginate(20);

$user->attachLikeStatus($posts);

Events

Event	Description
Overtrue\LaravelLike\Events\Liked	Triggered when the relationship is created.
Overtrue\LaravelLike\Events\Unliked	Triggered when the relationship is deleted.

Related packages

• Follow: overtrue/laravel-follow
• Like: overtrue/laravel-like
• Favorite: overtrue/laravel-favorite
• Subscribe: overtrue/laravel-subscribe
• Vote: overtrue/laravel-vote
• Bookmark: overtrue/laravel-bookmark (working in progress)

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Project supported by JetBrains

Many thanks to Jetbrains for kindly providing a license for me to work on this and other open-source projects.

Contributing

You can contribute in one of three ways:

1. File bug reports using the issue tracker.
2. Answer questions or fix bugs on the issue tracker.
3. Contribute new features or update the wiki.

The code contribution process is not very formal. You just need to make sure that you follow the PSR-0, PSR-1, and PSR-2 coding guidelines. Any new code contributions must be accompanied by unit tests where applicable.

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License

MIT