laravel withCount 統計關聯數量

 

 

roleModel定義關聯 hasmany 

public function users(){
	return $this->hasMany('App\Models\Users', 'role_id', 'role_id');
}

return  $this->query()->withCount("users")->get();

　　

　　

 

統計關聯數量，單個用法

$posts = Post::withCount('comments')->orderBy('id','desc')->paginate(6);

多個用法

$posts = Post::withCount(['comments','zans'])->orderBy('id','desc')->paginate(6);

調用

$post->comments_count