Laravel hasMany 关系统计帖子的点赞数和评论数

问题描述

代码:

$posts = Jumpsite::find($jid)
            ->posts()
            ->with('comments')
            ->with('likes')
            ->with('number_of_comments')
            ->with('number_of_likes')
            ->where('reply_to', 0)
            ->orderBy('pid', 'DESC')
            ->paginate(10);

每个帖子都有评论和喜欢.我最初只显示一些评论以避免大量加载.但我想显示每个帖子的总评论数和点赞数.我该怎么做?

Each post has a comment and likes. I only display a few of the comments initially to avoid large loads. But I want to show how many the total comments and likes for each post. How do I do this?

型号代码:

public function likes()
{
    return $this->hasMany('Like', 'pid', 'pid');
}

public function comments()
{
    return $this->hasMany('Post', 'reply_to', 'pid')->with('likes')->take(4);
}

public function number_of_likes()
{
    return $this->hasMany('Like', 'pid', 'pid')->count();
}

注意:

This is an API. All will be returned as JSON.

<小时>

更新

回归

Post
    author_id
    message
    Comments(recent 4)
        user_id
        message
        post_date
        Number_of_likes
    Likes
        user_id
    Number_of_total_comments
    Number_of_total_likes

<小时>

更新

我如何返回数据

$posts  = $posts->toArray();
$posts  = $posts['data'];

return Response::json(array(
   'data' => $posts
));

只要使用它，我就可以在 json 中获取我想要的所有数据.但我也想加上总数.

Just by using that I get all the data i want in the json. But I also want to add the total counts.

更新

protected $appends = array('total_likes');

public function getTotalLikesAttribute()
{
   return $this->hasMany('Like')->whereUserId($this->uid)->wherePostId($this->pid)->count();

}

但得到错误:

 Unknown column 'likes.post_id'

<小时>

错误

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'likes.post_id' in 'where clause' (SQL: select count(*) as aggregate from `likes` where `likes`.`deleted_at` is null and `likes`.`post_id` = 4 and `pid` = 4 and `uid` = 1)

推荐答案

在您的模型中放置以下访问器:

In your model place the following accessors:

点赞总数:

 public function getTotalLikesAttribute()
 {
    return $this->hasMany('Like')->whereUserId($this->author_id)->count();

 }

统计评论总数:

从你的描述中，我可以看到，你已经检索了作为评论的帖子数量

From your description, i can see, you have retrieving the number of posts as comments

public function getTotalCommentsAttribute()
{
    return $this->hasMany('Post')->whereUserId($this->author_id)->count();    
}

现在，从您的控制器:

$post  = Jumpsite::find($jid);

// total comments
var_dump( $post->total_comments );

// total Likes
var_dump( $post->total_likes );

这篇关于Laravel hasMany 关系统计帖子的点赞数和评论数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！