使用 Laravel 4 检索相关模型

我有3个表：用户，项目，项目和朋友。我想获取项目的所有项目，并与相关朋友列出每个项目。我的模型中是否缺少某些内容？最终，我想获得与这些物品相关的所有朋友。

// CONTROLLER
public function show($id)
{
    $uid = Auth::user()->id;
    $projects = Project::find($id)->with('item.friend')->get();
    return View::make('projects.show', compact('projects'));
}
//VIEW
@foreach ($projects as $project)
    @foreach ($project->friend as $friend)
        <li>
            <a href="#" class='itemLink' >{{$friend->email}}</a>
            <a href="#" class='itemLink' >{{$projects->item->name}}</a>
        </li>
    @endforeach
@endforeach
// MODELS
class User extends Eloquent {
    public function project()
    {
        return $this->hasMany('Project');
    }
    public function item()
    {
        return $this->hasMany('Item');
    }
        public function friend()
    {
        return $this->hasMany('Friend');
    }

class Project extends Eloquent {
    protected $guarded = array();
    public static $rules = array();
    public function item()
    {
        return $this->hasMany('Item');
    }
        public function friend()
    {
        return $this->hasMany('Friend');
    }
class Item extends Eloquent {
    protected $guarded = array();
    public static $rules = array();

    public function friend()
    {
        return $this->hasMany('Friend');
    }
class Friend extends Eloquent {
    protected $guarded = array();
    public static $rules = array();