Laravel 5.4,AJAX 应该不会出错
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【中文标题】Laravel 5.4,AJAX 应该不会出错【英文标题】:Laravel 5.4, AJAX Not Erroring When it Should 【发布时间】:2017-11-29 03:35:51 【问题描述】:我一直在尝试关注很多关于如何在 Laravel 中处理 AJAX 请求的不同文章。他们都是不同的..
我有一个最终没有向我抛出 500 错误,但它实际上并没有像您想象的那样抛出验证错误。
我的代码将始终默认为 AJAX 成功部分,而不是错误部分,并在控制台中显示“成功”,但也会显示我的控制器返回的错误 JSON。
我不知道我的伙计们发生了什么事。如果您能帮助我,将不胜感激!
控制器
public function store(Request $request)
if ($request->ajax())
$rules = array(
"name" => "required|string|unique:brands|max:255",
"contact" => "string|max:255",
"email" => "string|max:255",
"phone" => "max:12"
);
$validator = Validator::make(Input::all(), $rules);
if ($validator->fails())
return \Response::json(array(
"errors" => $validator->getMessageBag()->toArray()
));
else
// Submit to the database
$brand = new Brand();
$brand->name = $request->name;
$brand->contact = $request->contact;
$brand->email = $request->email;
$brand->phone = $request->phone;
$brand->created_by = auth()->user()->id;
$brand->updated_by = auth()->user()->id;
$brand->save();
return \Response::json($brand);
else
return \Response::json(array("error" => "response was not JSON"));
路线
// Brands
Route::get('/brands', 'BrandsController@index')->name('brands');
Route::post('/brands/store', 'BrandsController@store');
AJAX(通过 Html::script() 嵌入)
$(document).ready(function()
/**
* Save a new brand to the database via AJAX
*/
var url = "/brands/store";
$("#save").click(function (e)
$.ajaxSetup(
headers:
'X-CSRF-TOKEN': $('meta[name="_token"]').attr('content'),
);
e.preventDefault();
var formData =
name: $('#name').val(),
contact: $('#contact').val(),
email: $('#email').val(),
phone: $('#email').val(),
var type = "POST";
console.log(formData);
$.ajax(
type: type,
url: url,
data: formData,
dataType: 'json',
success: function (data)
console.log(data);
,
error: function (data)
console.log("Error: ", data);
console.log("Errors->", data.errors);
);
);
);
HTML(片段,因为它是一种模式)
<div class="modal" id="modal-create">
<div class="modal-background" onclick="modal('#modal-create', 'close');"></div>
<div class="modal-content">
<div id="modal-create-results"></div>
<h4 class="title is-4">
Create a Brand
</h4>
<form id="create_brand" name="create_brand" class="form" novalidate="">
<div class="field is-horizontal">
Form::label("name", "Name", ["class" => "field-label is-normal"])
<div class="field-body">
<div class="field">
<p class="control">
Form::text('name', null, ["class" => "input", "id" => "name", "required" => "required", "autofocus" => "autofocus"])
</p>
</div>
</div>
</div>
<div class="field is-horizontal">
Form::label("contact", "Contact", ["class" => "field-label is-normal"])
<div class="field-body">
<div class="field">
<p class="control">
Form::text('contact', null, ["class" => "input", "id" => "contact"])
</p>
</div>
</div>
</div>
<div class="field is-horizontal">
Form::label("email", "Email", ["class" => "field-label is-normal"])
<div class="field-body">
<div class="field">
<p class="control">
Form::email('email', null, ["class" => "input", "id" => "email"])
</p>
</div>
</div>
</div>
<div class="field is-horizontal">
Form::label("phone", "Phone", ["class" => "field-label is-normal"])
<div class="field-body">
<div class="field">
<p class="control">
Form::text('phone', null, ["class" => "input", "id" => "phone"])
</p>
</div>
</div>
</div>
<div class="field is-horizontal">
<p class="control is-grouped">
Form::button("Save", ["type" => "submit", "class" => "button is-stenton", "id" => "save"])
<a class="button" onclick="modal('#modal-create', 'close');">Cancel</a>
</p>
</div>
</form>
</div>
<button class="modal-close" onclick="modal('#modal-create', 'close');"></button>
</div>
<meta name="_token" content=" csrf_token() " />
html::script('js/brands/create_ajax.js')
【问题讨论】:
您是否尝试过在 ajax 帖子设置中使用完整的 url?也尝试使用像这样的数据data: name: name, contact: contact, email: email, phone: phone, ,
响应总是成功吗?
@AntonisTsimourtos 我试过了,但没用。
@PankajMakwana 它总是会成功。我在下面使用了 apkryfos 的方法,它奏效了。
您收到验证消息了吗?
【参考方案1】:
响应总是成功的,因为您总是发送成功的响应,即使它包含错误。
你有三个选择:
1) 手动发送错误码
$validator = Validator::make(Input::all(), $rules);
if ($validator->fails())
//422 is the standard error code laravel uses for validation errors so we're going to keep it
return \Response::json(array("errors" => $validator->getMessageBag()->toArray()),422);
2) 让 laravel 处理(推荐)
$this->validate($request,$rules); //Laravel will generate the appropriate error exception response
*$this->validate
来自特征ValidatesRequests
3) 不推荐:保持控制器代码不变并将 AJAX 代码更改为:
$.ajax(
type: type,
url: url,
data: formData,
dataType: 'json',
success: function (data)
if (data.errors) /* errors happened */
else /* no errors happened */
);
不推荐,因为在成功处理程序中处理错误是错误的。
【讨论】:
我选择了#2,成功了!现在我可以通过添加 responseText 并调用它来捕获错误并显示它们。太感谢了! +1! @WilliamDrake #2 是 laravel 建议的方式,所以这是一个很好的选择 你知道我将如何实现类似的东西:foreach (xhr.responseText as error) display_error_here 。现在我必须像这样检查: if (xhr.responseText["name"]) // exists, display error 为每个被验证的字段。for (var key in xhr.responseText) alert("Field:"+key+" has error "+ xhr.responseText[key]);
甚至更好的$.each(xhr.responseText, function (key, value) /* do stuff here */ );
谢谢伙计。我最终赢得了 var obj = JSON.parse(xhr.responseText)["errors"];然后使用 $.each 显示值。干杯!以上是关于Laravel 5.4,AJAX 应该不会出错的主要内容,如果未能解决你的问题,请参考以下文章