调用未定义的方法Illuminate\Database\Query\Builder :: associate()

Question

参考:如何更新Laravel 4中现有的Eloquent关系？

$userinfo = \Userinfo::find($id);
\User::find($id)->userinfo()->associate($userinfo)->save();

我收到错误: Call to undefined method Illuminate\Database\Query\Builder::associate()

这是整个方法:

public function saveUser($id)
{
    $user = \User::find($id);

    $userdata = \Input::all();

    $rules = array(
        'email' => 'required|email',
        'state' => 'size:2',
        'zip'   => 'size:5',
        'phone' => array('regex:/^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/')
    );

    $validator = \Validator::make($userdata, $rules);

    if ($validator->passes())
    {
        if ($userdata['email'] !== $user->email)
        {
            $rules = array('email' => 'unique:users');
            $validator = \Validator::make($userdata, $rules);
            if ($validator->fails()) return Redirect::route('admin.user.edit', array('user' => $user))
                ->with('error', 'Specified email already exists.');
        }

        $user->email                = $userdata['email'];
        $user->firstname            = $userdata['firstname'];
        $user->lastname             = $userdata['lastname'];

        $userinfoArray = array(
            'address'   => $userdata['address'],
            'city'      => $userdata['city'],
            'state'     => $userdata['state'],
            'zip'       => $userdata['zip'],
            'phone'     => preg_replace('/[^0-9]/', '', $userdata['phone'])
        );

        $user->save();

        if (!$user->userinfo)
        {
            $userinfo = new \Userinfo($userinfoArray);
            $userinfo = $user->userinfo()->save($userinfo);
        }
        else
        {
            $userinfo = \Userinfo::find($id);
            \User::find($id)->userinfo()->associate($userinfo)->save();
            //$user->userinfo()->update($userinfoArray);
        }

        return \Redirect::route('admin.user.detail', array('id' => $id))
            ->with('success', 'User updated.');
    }

    return \Redirect::route('admin.user.edit', array('id' => $id))
        ->withInput()
        ->withErrors($validator);
}

Answer 1

associate()是belongsTo关系的一种方法,但从上面看,你试图通过hasOne关系调用它.

我只是猜测你没有提供你雄辩的模型类代码,所以无法看到你如何准确设置关系,但如果你有:

class User extends Eloquent {
    public function userinfo()
    {
        return $this->hasOne('Userinfo');
    }
}

class Userinfo extends Eloquent {

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

然后需要针对Userinfo调用关联,因为它具有附加了associate()方法的belongsTo关系.

例如

$user = \User::find(4);      
$userinfo = \UserInfo::find(1);

$userinfo->user()->associate($user);
$userinfo->save();

将user_info表中的外键user_id设置为$ user对象的id.

看看上面的代码,看起来这并不是你实际上想要做的事情

$user->userinfo()->update($userinfoArray);

您已注释掉的调用实际上会执行您尝试实现的操作,即更新与当前用户相关的userinfo(如果该用户已存在).

希望这可以帮助.

狭谷