Question

我需要检查用户是否喜欢这个帖子，不要再喜欢它了。问题是，当我的代码中有一个用户喜欢这个帖子时，我不喜欢和其他用户一样。我不知道为什么。

控制器：

    $posts = Post::orderBy('created_at', 'desc')->paginate(10);
    foreach($posts as $p){
        foreach ($p->like as $like){
            $like = Like::where('user_id', '=', Auth::user()->id)->get();
        }
    }

post.php中：

public function user(){
    return $this->belongsTo('App\User');
}

public function like()
{
    return $this->hasMany('App\Like');
}

Like.php：

     public function user()
 {
     return $this->belongsTo('App\User');
 }

    public function post()
    {
        return $this->belongsTo('App\Post');
    }

user.php的：

public function post(){
    return $this->hasMany('App\Post');
}

public function like(){
    return $this->hasMany('App\Like');
}

HTML

                @if($like)
                    <i class="fa fa-thumbs-o-up liked pull-right" aria-hidden="true"></i>
                @else
                    <a href="/like/{{$p->id}}">
                        <i class="fa fa-thumbs-o-up likeBtn pull-right" aria-hidden="true"></i></a>
                @endif

Answer 1

不要在控制器中执行循环。在视图中做（刀片）

已编辑的控制器

$posts = Post::orderBy('created_at', 'desc')->paginate(10);
$likes = Like::select('post_id')->where('user_id',Auth::user()->id)->get();
$likeArr=array_flatten($likes->toArray()); //convert multidimensional array to single array for easy access
return view('yourview',['posts'=>$posts,'likes'=>$likeArr]);

查看

@foreach($posts as $p) @if(in_array($p->id,$likes)) <i class="fa fa-thumbs-o-up liked pull-right" aria-hidden="true"></i> @else <a href="/like/{{$p->id}}"> <i class="fa fa-thumbs-o-up likeBtn pull-right" aria-hidden="true"></i> </a> @endif @endforeach

Answer 2

如果您想检查Auth用户是否喜欢发帖，我就是这样做的。
Post.php

class Post extends Model{
   public function likes(){
      return $this->hasMany(Like::class);
   }
   public function isAuthUserLikedPost(){
      $like = $this->likes()->where('user_id',  Auth::user()->id)->get();
      if ($like->isEmpty()){
          return false;
      }
      return true;
   }
}

Comment.php

class Comment extends Model{
    public function post(){
        return $this->belongsTo(Post::class);
    }
}

在您看来，您可以用作：

{{ $post->isAuthUserLikedPost() ? 'do-something' : 'do-something else' }}

检查用户是否喜欢发布Laravel

2 个答案: