如何解决laravel中未定义的索引错误

Question

大家好，我是 laravel 的新手，我创建了父母表格，父母填写他的详细信息。所以我的问题是当用户输入所有的填充和提交按钮时给出的错误是未定义的索引：用户名。 这个查询的确切原因是什么我显示我的控制器以及我的视图

控制器

public function parentStepOne(){

    $username = $_REQUEST["username"];    
    $valid_username = Guardian::where('username', '=', $username)->count();

        if($valid_username  == 0){
          $guardian = new Guardian; 
          $guardian->username = $username;
          $guardian->password = Hash::make($_REQUEST["password"]);
          $guardian->save();
          Session::put("guardian",$guardian->id);
          return Redirect::to("/parents/pstep2");
        }

我的看法

<div class="form"> {{ Form::open(array('url' => '/api/v1/parent/parent_step_1', 'class' => "rgform form-horizontal worldoo-form", 'id' => "registrationForm", 'method' => "POST" )) }}
                    <div class="form-group "> {{ Form::label('username', 'Parent’s Username:', array('class' => "control-label")); }}
                      <div class=""> {{ Form::text('username', '', array('class' => "form-control", 'id' => "username"));}} </div>
                      <p>Please confirm your username, your e-mail will be your unique login ID.</p>
                      </div>
                    <div class="form-group"> {{ Form::label('password', 'Please choose a password for yourself:', array('class' => "control-label"));}}
                      <div class=""> {{Form::password('password', array('class' => "form-control", 'id' => "password"));}} </div>
                    </div>
                    <div class="form-group "> {{ Form::label('confirm_password', 'Please re - enter the same password:', array('class' => "control-label"));}}
                      <div class=""> {{Form::password('confirm_password', array('class' => "form-control", 'id' => "confirm_password"));}} </div>
                      <p>Please remember or note your password you will need it to log into worldoo as a parent.</p>
                    </div>
                    <div class="form-group">
                      <div class="text-center"> {{Form::submit('Next', array('class' => "btn btn-primary worldoo-btn"));}} </div>
                    </div>
                    {{ Form::close() }} </div>




}   

Answer 1

试试：$username = Input::get('username');