使用拉拉维尔编辑个人资料页面

每当用户转到 mywebsite.com/profile 时，我都需要一个表单来预填充他们在注册/注册流程中输入的值。

我能够在这里用我的表格做到这一点

<h1><b>Your Profile</b></h1>
<form method="POST" action="/profile/update">
    <div class="form-group hidden">
        <input type="hidden" name="_token" value="{{ csrf_token() }}">
        <input type="hidden" name="_method" value="PATCH">
    </div>
    <div class="form-group {{ $errors->has('name') ? ' has-error' : '' }}">
        <label for="email" class="control-label"><b>Name:</b></label>
        <input type="text" name="name" placeholder="Please enter your email here" class="form-control" value="{{ $user->name }}"/>
        <?php if ($errors->has('name')) :?>
        <span class="help-block">
            <strong>{{$errors->first('name')}}</strong>
        </span>
        <?php endif;?>
    </div>
    <div class="form-group {{ $errors->has('email') ? ' has-error' : '' }}">
        <label for="email" class="control-label"><b>Email:</b></label>
        <input type="text" name="email" placeholder="Please enter your email here" class="form-control" value="{{ $user->email }}"/>
        <?php if ($errors->has('email')) :?>
        <span class="help-block">
            <strong>{{$errors->first('email')}}</strong>
        </span>
        <?php endif;?>
    </div>
    <div class="form-group">
        <button type="submit" class="btn btn-default"> Submit </button>
    </div>
</form>

但是现在我遇到了这个问题，如果用户只是点击提交按钮而不更改任何字段，laravel的内置验证会检查并给我一条错误消息The name has already been taken.这是真的。 所以我不确定如何处理这个问题，但这是我下面的控制器

<?php
namespace App'Http'Controllers;
use Auth;
use App'User;
use Illuminate'Http'Request;
use App'Http'Controllers'Controller;
class ProfileController extends Controller
{
    /**
     * Update user profile & make backend push to DB
     * 
    **/
    public function index() {
        /**
         * fetching the user model
         **/
        $user = Auth::user();
        //var_dump($user);
        /**
         * Passing the user data to profile view
         */
        return view('profile', compact('user'));
    }
    public function update(Request $request) {
        /**
         * Validate request/input 
         **/
        $this->validate($request, [
            'name' => 'required|max:255|unique:users',
            'email' => 'required|email|max:255|unique:users',
        ]);
        /**
         * storing the input fields name & email in variable $input
         * type array
         **/
        $input = $request->only('name','email');
        /**
         * fetching the user model
         */
        $user = Auth::user();
        /**
         * Accessing the update method and passing in $input array of data
         **/
        $user->update($input);
        /**
         * after everything is done return them pack to /profile/ uri
         **/
        return back();
    }
}

这是我的路由文件。

// only authenticated users
Route::group( ['middleware' => 'auth'], function() {
    Route::get('/home', 'HomeController@index');
    // practicing using forms for sending data to the DB & populating form fields with DB data
    Route::get('profile', 'ProfileController@index');
    Route::patch('profile/{id}', 'ProfileController@update');
});