Laravel 中的 AJAX POST 请求后 422 无法处理的实体错误
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422 Unprocessable Entity error after AJAX POST request in Laravel
提问by Felix Maxime
On my website, users can reply to blog posts.
在我的网站上，用户可以回复博客文章。
It's a bit annoying for the page to refresh when replying, so I decided to try ajax. However, I'm getting an error.
回复的时候页面刷新有点烦，所以决定试试ajax。但是，我收到一个错误。
Form/markup:
表格/标记：
<form data-value="{{$status->id}}" class="replyForm" role="form" action="{{ route('status.reply', ['statusId' => $status->id]) }}" method="post">
<div class="form-group">
<textarea name="reply-{{$status->id}}" class="form-control" placeholder="Reply to this status"></textarea>
@if ($errors->has("reply-{$status->id}"))
<span class="help-block">
{{ $errors->first("reply-{$status->id}") }}
</span>
@endif
</div>
<input type="submit" value="Reply">
<input type="hidden" name="_token" value="{{ Session::token() }}" >
</form>
Controller:
控制器：
public function postReply(Request $request, $statusId) {
$this->validate($request, [
"reply-{$statusId}" => 'required|max:1000|alpha_dash',
], [
'required' => 'The reply body is required.'
]);
$status = Status::notReply()->find($statusId);
if (!$status) {
return redirect()->route('home');
}
if (!Auth::user()->isFollowing($status->user) && Auth::user()->id !== $status->user->id){
return redirect()->route('home');
}
$reply = Status::create([
'body' => $request->input("reply-{$statusId}"),
])->user()->associate(Auth::user());
$status->replies()->save($reply);
return redirect()->back();
}
Route:
路线：
Route::post('/status/{statusId}/reply', [
'uses' => '\CommendMe\Http\Controllers\StatusController@postReply',
'as' => 'status.reply',
'middleware' => ['auth'],
]);
Now this all works just fine. However, when I try to convert it into an Ajax request:
现在这一切都很好。但是，当我尝试将其转换为 Ajax 请求时：
$( ".replyForm" ).submit(function( e ) {
e.preventDefault();
var $token = $('input[name=_token]').val();
var dataString = $(this).serialize();
var $replyValue = $(this).attr('data-value');
$.ajax({
type: "POST",
url: host + '/status/' + $replyValue + '/reply',
data: {replyValue: $replyValue, _token:$token},
success: function(res) {
}
});
});
I get the following error:
我收到以下错误：
POST XHR http://localhost/status/41/reply[HTTP/1.1 422 Unprocessable Entity 184ms]
POST XHR http://localhost/status/41/reply[HTTP/1.1 422 Unprocessable Entity 184ms]
41 being the ID of the status being replied to.
41是被回复状态的ID。
What's causing this?
这是什么原因造成的？
采纳答案by Jomoos
From the validation, it seems that you are expecting reply-41as the input field.
从验证来看，您似乎希望将其reply-41作为输入字段。
"reply-{$statusId}" => 'required|max:1000|alpha_dash',
But, from the ajax request you are making, it seems that you are passing the data in replyValue
但是，从您发出的 ajax 请求来看，您似乎正在将数据传入 replyValue
data: {replyValue: $replyValue, _token:$token},
Thus, the validation rule is failing, because reply-41is required.
因此，验证规则失败，因为reply-41是必需的。
You can update the server side to expect replyValueinstead of reply-{$statusId}to solve it:
您可以更新服务器端以期望replyValue而不是reply-{$statusId}解决它：
"replyValue" => 'required|max:1000|alpha_dash',
// ...
'body' => $request->input("replyValue"),
