php - Laravel 5.2.45 的完整性约束违规错误消息

Question

我正在关注YouTube tutorial关于 Laravel 但当我更改此行时:

return redirect()->back();

至:

return redirect()->route('dashboard');

在 UserController.php 中我收到此错误:

QueryException in Connection.php line 729: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'email' cannot be null (SQL: insert into users (email, first_name, password, updated_at, created_at) values (, , y$WNp1qKLTDNktowIC0LRKE.SjCOxm8wZV97BRCLAcPk3wsmGR9mJvG, 2017-07-09 20:09:52, 2017-07-09 20:09:52))

这是整个函数:

public function postSignUp(Request $request)
{
    $email = $request['email'];
    $first_name = $request['first_name'];
    $password = bcrypt($request['password']);
    $user = new User();
    $user->email = $email;
    $user->first_name = $first_name;
    $user->password = $password;
    $user->save();
    return redirect()->route('dashboard');
    //return redirect()->back();  }

我尝试了 $email = $request->input('email'); 但没有任何变化。

谁能给我一个解释和解决方案吗？ 哦，这是我的注册表单

<form  action="{{ route('signup') }}" method="post">
  <div class="form-group">
    <label for="email">Your E-mail</label>
    <input class="form-control" type="text" name="email" id="email">
  </div>
  <div class="form-group">
    <label for="first_name">Your First name</label>
    <input class="form-control" type="text" name="first_name" id="first_name">
  </div>
  <div class="form-group">
    <label for="password">Your Password</label>
    <input class="form-control" type="password" name="password" id="password">
  </div>
  <button type="submit" class="btn btn-primary" >Submit</button>
  <input type="hidden" name="_token" value="{{ Session::token() }}">
</form>

正如我所说，它与 return redirect()->back(); 完美配合

Answer 1

请求对象上的 email 字段为空，请务必确认该字段具有某些值，并使用 dd($request->email) 或 dd($request->input('email').