laravel 调用未定义的方法 stdClass::save()
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Call to undefined method stdClass::save()
提问by OunknownO
I'm trying to save into the database but I constantly get this error
我正在尝试保存到数据库中，但我经常收到此错误
Call to undefined method stdClass::save()
调用未定义的方法 stdClass::save()
my controller
我的控制器
$c = DB::table('subject_user')->where('user_id', $value)->first();
$c->auth_teacher = '1';
$c->save();
回答by 502_Geek
Try this approach
试试这个方法
I haven't try savemethod with wherecondition. Hopefully, this approach may solve your problem.
我还没有尝试有条件的save方法where。希望这种方法可以解决您的问题。
DB::table('subject_user')->where('user_id', $value)->update(['auth_teacher' => 1]);
回答by Ryan
I just ran into the same problem and figured out the real Laravel answer.
我刚刚遇到了同样的问题，并找出了真正的 Laravel 答案。
The answer you've accepted here (https://stackoverflow.com/a/41051946/470749) doesn't follow the truest Laravel way.
您在此处接受的答案 ( https://stackoverflow.com/a/41051946/470749) 并未遵循最真实的 Laravel 方式。
When I re-read the docs at https://laravel.com/docs/5.4/eloquent#retrieving-models, I noticed that ->save()will work only if the way that I retrievedthe object(s) was via the model like this:
当我在https://laravel.com/docs/5.4/eloquent#retrieving-models重新阅读文档时，我注意到->save()只有当我检索对象的方式是通过这样的模型时才会起作用：
$flights = App\Flight::where('active', 1)
->orderBy('name', 'desc')
->take(10)
->get();
There is no need to use DB::table()anywhere, and using it doesn't seem to be the recommended way.
没有必要在DB::table()任何地方使用，使用它似乎不是推荐的方式。
So, you could change DB::table('subject_user')->whereto App\Subject_user::where(or whatever is appropriate for you).
因此，您可以更改DB::table('subject_user')->where为App\Subject_user::where（或任何适合您的）。
回答by Chris8447
As you can read here there are two ways of saving/updating records. In your case you would need to do the following: https://laravel.com/docs/6.x/queries#updates
正如您在此处阅读的那样，有两种保存/更新记录的方法。在您的情况下，您需要执行以下操作：https: //laravel.com/docs/6.x/queries#updates
$affected = DB::table('users')
->where('id', 1)
->update(['votes' => 1]);
回答by OunknownO
DB::table('subject_user')->where('user_id', $value)->update(['auth_teacher' => 1]);
DB::table('subject_user')->where('user_id', $value)->update(['auth_teacher' => 1]);
I have been able to succeed with this.
我已经能够成功了。
