How to organize a post rating system +1 -1?

Question

Yii

How to organize a post rating system +1 -1, with rating storage in the database, with voting without reloading the page (this is my main problem). And all this needs to be done in the Yii2 framework.

Answer 1

<?php \yii\widgets\Pjax::begin(); ?>
<span>Рейтинг 256</span>
<a href="/vote?id=айдизаписи&plus=true">+</a>
<a href="/vote?id=айдизаписи&plus=false">+</a>
<?php \yii\widgets\Pjax::end(); ?>

In the controller

public function actionVote($id,$plus){
$x=1
if($plus)
$x = -1;

$model = Chtoto::findOne($id);
$model->rating = $model->rating + $x; 
if($model->save())
return $this->renderAjax('_вьюшка_Блока_рейтинга_и_кнопок',['rating'=>$model->rating]);

return false;
}

I think the idea is clear.

Answer 2

you make an ajax request when you click on the +1 or -1 button, which will be edited in your base post, putting down the desired rating for it. Something like this

Answer 3

https://github.com/Chiliec/yii2-vote

Answer 4

Created 2 actions in the controller:
public function actionVoteUp($id)
{
$post = Post::findOne($id);
if (!$post->ratingUsers) {
$post->updateCounters(['rating' => 1]);
$model = new RatingUser();
$model->user_id = Yii::$app->user->id;
$model->post_id = $id;
$model->save();
} else {
Yii::$app->session->setFlash('error', 'You have already voted for this post');
}
return $this->renderAjax('vote', ['post' => $post]);
if (!$post->ratingUsers) {
$post->updateCounters(['rating' => -1]);
$model = new RatingUser();
$model->user_id = Yii::$app->user->id;
$model->post_id = $id;
$model->save();
} else {
Yii::$app->session->setFlash('error', 'You have already voted for this post');
}
return $this->renderAjax('vote', ['post' => $post]);
}
View: <?php \yii\widgets\Pjax::begin(['enablePushState' => false]); ?>
<?= $post->rating ?>
<?= Yii::$app->session->getFlash('error')?>
< ?php \yii\widgets\Pjax::end(); ?>