overtrue/laravel-vote

User Vote features for Laravel Application.

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overtrue

3.0.4 2022-08-11 15:15 UTC

This package is auto-updated.

Last update: 2022-08-12 01:54:44 UTC


README

⬆️ ⬇️ User vote system for Laravel Application.

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Installing

composer require overtrue/laravel-vote -vvv

Configuration & Migrations

php artisan vendor:publish 

then create tables:

php artisan migrate

Usage

Traits

Overtrue\LaravelVote\Traits\Voter

use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Overtrue\LaravelVote\Traits\Voter;

class User extends Authenticatable
{
    use Voter;
    
    <...>
}

Overtrue\LaravelVote\Traits\Voteable

use Illuminate\Database\Eloquent\Model;
use Overtrue\LaravelVote\Traits\Votable;

class Idea extends Model
{
    use Votable;

    <...>
}

API

$user = User::find(1);
$idea = Idea::find(2);

$user->vote($idea, 1); // upvote
$user->vote($idea, -1); // downvote
$user->upvote($idea);
$user->downvote($idea);

// with custom number of votes
$user->upvote($idea, 3);
$user->downvote($idea, 3);

// cancel vote
$user->cancelVote($idea);

// get my voted items
$user->getVotedItems(Idea::class) // Illuminate\Database\Eloquent\Builder

// state
$user->hasVoted($idea); 
$idea->hasBeenVotedBy($user); 

Get model voters:

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

Get user voted items.

User can easy to get Votable models to do what you want.

*note: this method will return a Illuminate\Database\Eloquent\Builder *

$votedItemsQuery = $user->getVotedItems();

// filter votable_type
$votedIdeasQuery = $user->getVotedItems(Idea::class);

// fetch results
$votedIdeas = $user->getVoteItems(Idea::class)->get();
$votedIdeas = $user->getVoteItems(Idea::class)->paginate();
$votedIdeas = $user->getVoteItems(Idea::class)->where('title', 'Laravel-Vote')->get();

Aggregations

count relations

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

// filter votable_type
$user->votes()->ofType(Idea::class)->count(); 

// voters count
$idea->voters()->count();

List with *_count attribute:

// for Voter models:
$users = User::withCount('votes')->get();
// or
$users = User::withCount('upvotes')->get();
// or
$users = User::withCount('downvotes')->get();
// or
$users = User::withCount(['votes', 'upvotes', 'downvotes'])->get();

foreach($users as $user) {
    echo $user->votes_count;
    echo $user->upvotes_count;
    echo $user->downvotes_count;
}

// for Votable models: 
$ideas = Idea::withCount('voters')->get();
// or
$ideas = Idea::withCount('upvoters')->get();
$ideas = Idea::withCount('downvoters')->get();

// or
$ideas = Idea::withCount(['voters', 'upvoters', 'downvoters'])->get();

foreach($ideas as $idea) {
    echo $idea->voters_count;
    echo $idea->upvoters_count;
    echo $idea->downvoters_count;
}

Votable sum votes

$user1->upvote($idea); // 1 (up)
$user2->upvote($idea); // 2 (up)
$user3->upvote($idea); // 3 (up)
$user4->downvote($idea); // -1 (down)

// sum(votes)
$idea->totalVotes(); // 2(3 - 1)

// sum(votes) where votes > 0
$idea->totalUpvotes(); // 3

// abs(sum(votes)) where votes < 0
$idea->totalDownvotes(); // 1

// appends aggregations attributes
$idea->appendsVotesAttributes();
$idea->toArray();
// result
[
    "id" => 1
    "title" => "Add socialite login support."
    "created_at" => "2021-05-20T03:26:16.000000Z"
    "updated_at" => "2021-05-20T03:26:16.000000Z"
    
    // these aggregations attributes will be appends.
    "total_votes" => 2
    "total_upvotes" => 3
    "total_downvotes" => 1
  ],

Attach voter vote status to votable collection

You can use Voter::attachVoteStatus(Collection $votables) to attach the voter vote status, it will set has_voted,has_upvoted and has_downvoted attributes to each model of $votables:

For model

$idea = Idea::find(1);

$user->attachVoteStatus($idea);

// 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_voted" => true
    "has_upvoted" => true
    "has_downvoted" => false
 ],

For Collection | Paginator | LengthAwarePaginator | array:

$ideas = Idea::oldest('id')->get();

$user->attachVoteStatus($ideas);

$ideas = $ideas->toArray();

// 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_voted" => true
    "has_upvoted" => true
    "has_downvoted" => false
  ],
  [
    "id" => 2
    "title" => "Add php8 support."
    "created_at" => "2021-05-20T03:26:16.000000Z"
    "updated_at" => "2021-05-20T03:26:16.000000Z"
    "has_voted" => true
    "has_upvoted" => false
    "has_downvoted" => true
  ],
  [
    "id" => 3
    "title" => "Add qrcode support."
    "created_at" => "2021-05-20T03:26:16.000000Z"
    "updated_at" => "2021-05-20T03:26:16.000000Z"
    "has_voted" => false
    "has_upvoted" => false
    "has_downvoted" => false
  ],
]

For pagination

$ideas = Idea::paginate(20);

$user->attachVoteStatus($ideas->getCollection());

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:

// Voter
use Tests\Idea;$users = User::with('votes')->get();

foreach($users as $user) {
    $user->hasVoted($idea);
}

// Votable
$ideas = Idea::with('voters')->get();

foreach($ideas as $idea) {
    $idea->hasBeenVotedBy($user);
}

// Votable votes
$ideas = Idea::withTotalVotes() // total_votes
        ->withTotalUpvotes() // total_upvotes
        ->withTotalDownvotes() // total_downvotes
        ->get();

// same as
// withVotesAttributes() = withTotalVotes() + withTotalUpvotes() + withTotalDownvotes() 
$ideas = Idea::withVotesAttributes()->get();

// result
[
  [
    "id" => 1
    "title" => "Add socialite login support."
    "created_at" => "2021-05-19T07:01:10.000000Z"
    "updated_at" => "2021-05-19T07:01:10.000000Z"
    "total_votes" => 2
    "total_upvotes" => 3
    "total_downvotes" => 1
  ],
  [
    "id" => 2
    "title" => "Add PHP8 support."
    "created_at" => "2021-05-20T07:01:10.000000Z"
    "updated_at" => "2021-05-20T07:01:10.000000Z"
    "total_votes" => 1
    "total_upvotes" => 2
    "total_downvotes" => 1
  ]
]

Events

Event Description
Overtrue\LaravelVote\Events\Voted Triggered when the relationship is created.
Overtrue\LaravelVote\Events\VoteCancelled Triggered when the relationship is deleted.

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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