javascript - 发送序列化的表单数据并接收带有表单和会话数据的 PHP Laravel 重定向
问题描述
我的页面上有一个表格。提交后,我将在表单中添加其他数据以供提交。我可以通过 ajax 提交序列化的表单数据,但是,我无法成功处理响应。响应来自 Laravel,包括重定向 URL、会话“成功”或“错误”消息,以及表单错误重定向上可能的表单数据。
JS提交函数
function submit() {
var formData = $('#form').serializeArray();
formData.push({ name: "additional_data", value: additional_data });
$.ajax({
type: "POST",
url: "/submit_form_data",
data: formData,
success: function(data) {
// response includes redirect url, session data ('success' or 'error' + message), form data (if form error)
}
});
}
Laravel 数据提交路径
public function submitData(Request $request) {
$data = $request->all();
// check for form error and redirect back with error message and form input
$validator = Validator::make($data);
if ($validator->fails()) {
return redirect()
->back()
->withErrors($validator)
->withInput();
}
// submit data and redirect with success message
$this->createEntry($data);
return redirect('/dashboard')
->with('success', "Data successfully submitted");
}
我尝试通过 XMLHttpRequest 提交数据,但表单数据和会话数据似乎不包含在请求响应中的任何位置。
function submit() {
var formData = $('#form').serializeArray();
formData.push({ name: "additional_data", value: additional_data });
var request = new XMLHttpRequest();
request.onreadystatechange = function() {
if (request.readyState == XMLHttpRequest.DONE) {
// window redirects, but form data and session data are lost
window.location.replace(request.responseURL);
}
}
request.open("POST", '/submit_form_data');
request.send(formData);
}
如果我通过简单的 $("#form").submit() 提交表单,则表单数据和会话数据都将原封不动地传输,但是,使用此方法时似乎没有任何方法可以附加表单数据并且所以我的“附加数据”丢失了。
最后一点。如果我在不等待 XMLHttpRequest.DONE 的情况下重定向,则会保留表单和会话数据。但是,在这种情况下,我不知道应该重定向到哪个 URL。
function submit() {
var formData = $('#form').serializeArray();
formData.push({ name: "additional_data", value: additional_data });
var request = new XMLHttpRequest();
request.open("POST", '/submit_form_data');
request.send(formData);
// session data will be intact, but I don't have a redirect URL
window.location.replace('/dashboard');
}
更新:
使用 hppycoder 的建议,我找到了一个可行的解决方案。
问题是前端所需的值需要通过 PHP 设置。这包括通过redirect()->withErrors($validator) 设置的$errors 变量,以及通过redirect()->withInput() 设置的表单输入数据。
但是,我需要能够在我的 JavaScript 中读取 php 响应。如果我返回一个 response()->json() 对象,我可以这样做,但是不会设置 $errors 和表单输入数据。
解决方法是结合这两种方法,虽然感觉不太优雅,因为它需要我多次调用我的 POST 方法。
Laravel 提交路由
public function submitData(Request $request) {
$data = $request->all();
// check for form error and redirect back with error message and form input
$validator = Validator::make($data);
if ($validator->fails()) {
// this will set the necessary php values ($errors variable and form input data)
// response cannot be read by ajax
return redirect()
->back()
->withErrors($validator)
->withInput();
}
// no form errors, submit data and return 'success' response
$this->createEntry($data);
// this response can be read by ajax, and the Session 'success' value is set
Session::put('success', ("Data successfully submitted"));
return response()->json([
'success' => true
]);
}
JavaScript 提交函数
function submit() {
var formData = $('#form').serializeArray();
formData.push({ name: "additional_data", value: additional_data });
$.ajax({
type: "POST",
url: "/submit_form_data",
data: formData,
success: function(data) {
if (data.success) {
// check for 'success' and redirect to dashboard
window.location.replace("/dashboard");
} else {
// if no success message, reload current page with form errors and data
// if I call window.location.reload() here, the form data and $errors variable are not set
// in order to set these I need to submit the data a second time via XMLHttpRequest
var form = document.getElementById('form');
var formData = new FormData(form);
formData.push({ name: "additional_data", value: additional_data });
var request = new XMLHttpRequest();
request.open("POST", '/submit_form_data');
request.send(formData);
// now after reload, the form data and $errors varaible will be set
window.location.reload();
}
}
});
}
此外,下面是我的 html,它显示了刀片模板如何呈现 php 值。我应该将其包含在原始帖子中,以阐明为什么需要设置 php 值。
<body>
@if (count($errors->all()) > 0)
<div class="alert alert-danger alert-block">
<button type="button" class="close" data-dismiss="alert">×</button>
<h4>Error</h4>
Please check the form below for errors
</div>
@endif
@if ($message = Session::get('success'))
<div class="alert alert-success alert-block">
<button type="button" class="close" data-dismiss="alert">×</button>
<h4>Success</h4>
{{ $message }}
</div>
@endif
<form id="form" class="form-horizontal" role="form" method="POST" enctype="multipart/form-data">
<div class="row form-group">
<label class="control-label">Some Data</label>
<input class="form-control" name="some_data" value="{{ old('some_data') }}">
</div>
<div class="row">
@if ($errors->has('some_data'))
<span class="help-block">
<strong>{{ $errors->first('some_data') }}</strong>
</span>
@endif
</div>
</form>
</body>
解决方案
我将使用我之前发布的文档来展示。
public function submitData(Request $request) {
$data = $request->all();
// check for form error and redirect back with error message and form input
$validator = Validator::make($data);
if ($validator->fails()) {
return redirect()
->back()
->withErrors($validator)
->withInput();
}
// submit data and redirect with success message
$this->createEntry($data);
return response()->json([
'success' => true,
'message' => 'Data successfully submitted',
]);
}
JS 提交:
function submit() {
var formData = $('#form').serializeArray();
formData.push({ name: "additional_data", value: additional_data });
$.ajax({
type: "POST",
url: "/submit_form_data",
data: formData,
success: function(data) {
console.log(data);
// response includes redirect url, session data ('success' or 'error' + message), form data (if form error)
}
});
}
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