Question

谷歌搜索并将我的头撞在桌子上好几个小时之后，我仍然无法按照我想要的方式查询我的各种问题。

问题：我在文章和评论以及评论和回复之间存在一对多的关系，这很好。在一种情况下，虽然我想获得JUST评论+回复而不加载与文章的反向关系。如何实现？

我已经放弃了我最初的努力，希望从与某个评论相关的文章加载特定细胞。这似乎更加不可能。

我的想法是错的还是这里的问题是什么？

以下是模型：

文章：

class Article extends Eloquent{

     protected $table = 'articles';

     protected $softDelete = true;

     protected $fillable = array('short_title','long_title','description','content','zenra_link','source_url','source_title');

     public static $rules = array(
         'short_title'=>'required|min:5',
         'long_title' =>'required',
         'description'=>'required',
         'content'=>'required'
     );

     public function category(){
         return $this->belongsTo('Category');
     }
     public function tag(){
         return $this->belongsToMany('Tag','tagmaps');
     }
     public function comment(){
         return $this->hasMany('Comment');
     }
     public function picture(){
         return $this->hasOne('Picture');
     }
 }

注释：

 class Comment extends Eloquent{

      protected $fillable = array('author','content','published','article_id');
      protected $table = 'comment';
      public static $rules = array(
        'author'=>'required|min:5',
        'comment' =>'required|min:10'
      );

      public function reply(){
         return $this->hasMany('Reply');
      }
      public function article(){
         return $this->belongsTo('Article');
      }
 }

最后但并非最不重要的是回复：

 class Reply extends Eloquent{

    protected $fillable = array('author','content','published','comment_id');
    protected $table = 'reply';
    public static $rules = array(
       'author'=>'required|min:5',
       'comment' =>'required|min:5'
    );

    public function comment(){
        return $this->belongsTo('Comment');
    }

 }

问题1：如何通过评论ID得到评论+回复？

问题2：如果可能，我可以通过评论ID从文章中获得评论+回复+特定单元吗？

问题3：如果评论ID没有附加任何评论，我如何获得评论？

谢谢。

Answer 1

3. Comment::find($commentId); // return Eloquent Model with given id

2. // I suggest renaming relation to replies as there are many replies for a comment
   $comment = Comment::with('replies') // load related replies
      ->with('article') // you want a single field, but better load whole article, then fetch what needed
      ->find($commentId);

   // then:
   $comment->replies; // Collection of related Reply models
   $comment->article->id; // id of related article (or whatever field you want)

1. Comment::with('replies')->find($commentId); // retrieves comment with related replies

没有关系的负载模型似乎不可能

1 个答案: